albany operation and maintenance
DESCRIPTION
Albany Operation and MaintenanceTRANSCRIPT
Albany Eng
Pump Deta
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INSTALOPERAMAINTE
GEAR PUORIGIN
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 2
TABLE OF CONTENTSINTRODUCTION ....................................................................................................................................................... 3
USING THIS MANUAL ..................................................................................................................................................... 3
HEALTH & SAFETY .................................................................................................................................................... 4
LIMITS OF USE ................................................................................................................................................................ 4 NOISE ............................................................................................................................................................................. 4 PUMP INSTALLATION / MAINTENANCE ........................................................................................................................ 5 WORK ON ELECTRICAL EQUIPMENT .............................................................................................................................. 6 WORKING ON PRESSURISED SYSTEMS .......................................................................................................................... 6 COSHH ............................................................................................................................................................................ 6 MAGNETIC COUPLINGS ................................................................................................................................................. 6
INFORMATION ON ALBANY PUMPS ......................................................................................................................... 7
DESCRIPTION ................................................................................................................................................................. 7 OPERATING PRINCIPLE .................................................................................................................................................. 7 RECEIVING THE PUMP ................................................................................................................................................... 8 USING YOUR ALBANY PUMP ......................................................................................................................................... 8 SERIAL NUMBERS .......................................................................................................................................................... 9
STORAGE AND LIFTING OF GEAR PUMPS ................................................................................................................ 10
STORAGE ...................................................................................................................................................................... 10 LONG TERM STORAGE ................................................................................................................................................. 10 LIFTING ......................................................................................................................................................................... 12
INSTALLATION ....................................................................................................................................................... 13
GENERAL INFORMATION ............................................................................................................................................. 13 DIRECTION OF ROTATION ............................................................................................................................................ 14 BUILD CONFIGURATION .............................................................................................................................................. 14 REVERSING YOUR PUMP ROTATION ........................................................................................................................... 14 PIPING .......................................................................................................................................................................... 15 COUPLINGS .................................................................................................................................................................. 16 PUMP ALIGNMENT ...................................................................................................................................................... 17 EQUIPMENT INSTALLATION ........................................................................................................................................ 18 TYPICAL INSTALLATION ............................................................................................................................................... 18
OPERATING & MAINTENANCE ................................................................................................................................ 19
PUMP START UP .......................................................................................................................................................... 19 PREVENTATIVE MAINTENANCE ................................................................................................................................... 20 STRIPPING, CLEANING & REFITTING ............................................................................................................................ 21 CLEARANCE GUIDE....................................................................................................................................................... 22
SEALING METHODS ................................................................................................................................................ 23
MECHANICAL SEALS..................................................................................................................................................... 24 PACKED GLAND ............................................................................................................................................................ 25 LIP SEALS ...................................................................................................................................................................... 26
RELIEF VALVES ....................................................................................................................................................... 27
MAINTENANCE OF RELIEF VALVE ................................................................................................................................ 28
SPARES & REPAIRS ................................................................................................................................................. 30
SPARES ......................................................................................................................................................................... 30 REPAIRS ....................................................................................................................................................................... 31
INFORMATION ON ‘ALTERNATIVE’ ALBANY MODELS .............................................................................................. 32
ATEX ...................................................................................................................................................................... 33
TROUBLE SHOOTING .............................................................................................................................................. 34
CONTACTS ............................................................................................................................................................. 36
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 3
INTRODUCTION This manual contains general instructions for the storage, installation, operation and maintenance of an Albany gear pump. Albany gear pumps are available in many configurations, whilst they may look the same, there may be differences from one pump to another, and therefore supplementary instructions can be supplied. To get the best from the pump, carefully read and understand this manual before installation and start-up. Albany cannot anticipate all of the situations a user may encounter while installing and using Albany products. Therefore, the user of an Albany product MUST know and follow all applicable industry specifications on the safe installation and use of these products. Albany Engineering Company Limited will not be held responsible for any consequence due to the improper installation and use of the pump. USING THIS MANUAL
• Read and understand the manual. Contact us if anything is not clear.
• Keep the manual for the life of the pump.
• If pump maintenance is necessary use this manual for safety and technical information.
• For safe working, observe the operating and maintenance instructions for
associated motors, engines, couplings and relief valves.
Albany Eng
The followUnited Kinadvise theoperating, Personnel the pump. 1. The app2. Installat3. Normal accidents The follow
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Page: 5
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Page: 8
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 9
INFORMATION ON ALBANY PUMPS SERIAL NUMBERS Please record the pump model and serial number, Albany will need this information when you require parts or service, should any problems occur with the pump in its lifetime we have a spares and repair service. The use of genuine Albany parts will provide the safest and most reliable operation of your pump. ISO certification and quality control procedures ensure the parts are manufactured to the highest quality and safety levels. Please contact Albany for details on genuine pump parts.
Please e-mail: [email protected] To help us identify the pump Albany will need to know the pump serial Number which is stamped into the pump casing. Typical positions for serial number are shown below.
In the case of pump sets our nameplate can be found on the bedplate.
Albany
YOUR REF:-PART No:-
SERIAL No:-PUMP TYPE:-
CUSTOMER:-
PRESSURE:-L.P.M:-
R.P.M:-
CHURCH ROAD, LYDNEY,GLOS.
GL15 5EQ - UK FAX:- 01594-842574
TEL:- 01594-842275
ATEX MARKING:-
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 10
STORAGE AND LIFTING OF GEAR PUMPS STORAGE Albany’s normal packing procedure is designed to protect the pump during shipping only. Upon delivery of equipment, store in a covered and dry location. Store only in dust, and vibration free ambient temperature conditions. The transport packaging is not a suitable place for long term storage. Pumps to be placed in storage should be coated internally with oil or a suitable preservative prior to storage. Rotation of drive shaft by hand to circulate the preservative oil every 8 weeks is recommended. If the shaft has to be hand rotated occasionally to comply with the bearing manufacturer’s recommendations, then the sealing faces of the mechanical seal should be coated with a light film of lubricating oil. Mechanical seal clamping plate bolts can be loosened off approximately 2 to 3 rotations at the throat to relax the spring loading. The corresponding gap left between the stuffing box face and the gland plate should be masked to exclude dirt. Check glands and seals for deterioration. For pump units coupled to motors/engines refer to drive and coupling manufacturers for their storage procedures. LONG TERM STORAGE Pumps that will not be installed for an extended period should be stored indoors, if possible. The factory installed port plugs will not ensure protection from excessive humidity, splash water or rain. Care should be taken with motor and mechanical seals. Mechanical Seals: Pumps and other equipment subject to long term storage are best stored without the mechanical seal being installed. Seal installation should only then be carried out shortly before the actual start up of the unit. The Seal chamber should be completely dry. The seal faces should ideally be assembled dry also. If hydrostatic or acceptance testing is to be done by the equipment manufacturer, then the seal area must be flushed clean and totally dried afterwards. Suction and discharge flanges are to be covered to exclude the ingress of dirt. Covers should be marked: ‘DO NOT REMOVE UNTIL EQUIPMENT IS INSTALLED’. The open area between the gland plate and shaft sleeve is to be masked to exclude dirt. All open parts in the gland, adaptor plate and stuffing box are to be plugged and sealed. Mechanical Seals – shelf life: Mechanical seals should be stored in accordance with international DIN 7716 and ISO 2230 standards. Brief outlines of the essential recommendations are: All seals should be retained in the original packaging, in a dry, stable, elevated stores location with good air circulation and away from direct sunlight, dust, chemicals and vibrations. Ideally temperature range of -10 to +20 deg C and a humidity level below 65%. If the above storage guide lines are met, the expected shelf life of seals with standard Nitrile, Viton or EPDM elastomers can be considered to be 5 to 10 years.
Albany Eng
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Page: 11
AR PUMPS
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Page: 12
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Albany Eng
GENERAL
Motors: Re Albany pumrotors. Install a filtdrop at theUse a mes Check thatinstallationpump’s rot
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Page: 13
LLATION
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 14
INSTALLATIONDIRECTION OF ROTATION Pumps can be run in either direction and when reversed the direction of flow is reversed. It is advisable to keep the original rotation as a pressure relief system is provided in the covers to prevent hydraulic noise. Some pumps have internal relief passages between suction areas and the gland or seal. These are used to reduce gland pressures and become inoperative in reverse rotation. The Relief Valve becomes inoperative in reverse. In most pumps the valve can be moved to operate with the new rotation (see drawing of Build Configurations). Note, some mechanical seals used in Albany pumps are designed for use in one direction only. BUILD CONFIGURATION The handing of a pump indicates the direction of flow through the pump looking on the drive shaft. All views below are looking on the pump drive shaft and show a relief valve pump (these views will apply equally to a non relief valve pump).
Top Drive/ Anti Clockwise Rotation (Left hand pump – Flow from right to left)
Top Drive/ Clockwise Rotation (Right hand pump – Flow from left to right)
Bottom Drive/ Clockwise Rotation (Left hand pump – Flow from right to left)
Bottom Drive/ Anti Clockwise Rotation (Right hand pump – Flow from left to right)
REVERSING YOUR PUMP ROTATION To preserve your warranty, please phone us first before making any changes, have the serial number to hand. It maybe that to reverse the direction of rotation on your build of pump could create a hazardous situation. If you have a pump fitted with a pressure relieved gland this will not work in reverse rotation.
DELIVERY SUCTION
SUCTION DELIVERY
SUCTIONDELIVERY
DELIVERYSUCTION
Albany Eng
PIPING The pipes order to avtransferred Flush the pat start up. Suction anthe branchliquid is visalways be when not fsupported Suction anbranches T To avoid scoarse stra Fit a presspump bran Most Albanexternal re
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Page: 15
LLATION
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COUPLINThe couplimain types Flexible Ty
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Page: 16
LLATION
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 17
INSTALLATION PUMP ALIGNMENT Pumps direct coupled to motors / engines on bedplates are accurately aligned at our Works before despatch. It is essential that this alignment is maintained when the unit is installed and the pipe work connected. If there is any doubt carefully check after installation. Undue force in fitting pipe work can cause serious damage to the pump flange. Most pumps are fitted with Fenner HRC flexible couplings. A flexible coupling is not designed to absorb misalignment. Check for –
Parallel misalignment – shafts are inline angularly and parallel to each other, but are off-set. This is checked by placing a short rule or straight edge on the coupling hub outside diameters. Check top/top and side/side and move or shim motor and pump as required.
Axial Misalignment – includes implicational ‘end float’, Shafts move axially increasing or decreasing the distance between shaft ends.
Angular misalignment – shafts are at an angle to one another. Make sure that the hub faces are parallel by checking top/top and side/side with callipers.
Allowable errors are:-
Coupling Type / Size Maximum Misalignment Parallel Axial Angular
Fenner HRC 70, 90, 110 0.3mm +0.2, +0.5, +0.6mm 1.0 degree Fenner HRC 130 150, 180 0.4mm +0.8, +0.9, +1.1mm
Fenner HRC 230, 280 0.5mm +1.3, +1.7mm Metastream TSK13 ± 0.3mm ± 1.0mm 0.5 degree Metastream TSK33 ± 0.35mm ± 1.3mm No pump, and particularly mechanical seal pumps, will give long service if they are out of alignment. A major misalignment will cause a shorter coupling life & increased bearing wear. Note: Even though the pump was aligned after assembly prior to shipment, checking the alignment before use is the responsibility of the installer and user of the unit.
PARALLEL
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Albany Eng
EQUIPMEBedplate mpoured on permanent The pump bolts are gmixed grou After the coalignment
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Page: 18
LLATION
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Albany Eng
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Page: 19
TENANCE
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Page: 20
TENANCE
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Page: 21
TENANCE
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 22
OPERATING & MAINTENANCE CLEARANCE GUIDE
Gear Pump Range/Model Total end clearances Diametrical Clearances Albany Barclay Kellett Low viscosity liquid
(eg: Paraffin 1 to 3 cst)High viscosity liquid 1200 cst and over
AP2, 3, 3.5 25 Series
0.025 – 0.050 mm (.001”-.002”)
0.050 -0.076 mm (.002”-.003”)
0.050 – 0.101 mm (.002”-.004”)
AP4, 5 40 Series
0.025 – 0.050 mm (.001”-.002”)
0.050 -0.076 mm (.002”-.003”)
0.050 – 0.101 mm (.002”-.004”)
AP6, 7 0.025 – 0.050 mm
(.001”-.002”) 0.152 – 0.203 mm
(.006”-.008”) 0.050 – 0.152 mm
(.002”-.006”) AP8,9 1” SMC 56 Series
0.025 – 0.076 mm (.001”-.003”)
0.152 – 0.203 mm (.006”-.008”)
0.050 – 0.152 mm (.002”-.006”)
1¼” SMC, SBL3 AP10,11,11.5 HD3,4,5,6
1¾”, 2½”, 3½”, 4½”/8T
0.076 – 0.152 mm (.003”-.006”)
0.203 – 0.304 mm (.008”-.012”)
0.101 – 0.254 mm (.004”-.010”)
1½” , 2”SMC & larger AP12, 13, 13.5 & larger HD7,8,10
22/8T, 33/8T, 44/8T, 4/10T
0.101 – 0.020 mm (.004“-.008“)
0.020 – 0.508 mm (.008“-.020“)
0.203 – 0.508 mm (.008“-.020“)
For pressure under 7 bar (102 psi) these figures are a general guide. At low speeds and with large suction lifts, smaller clearances are needed. With very high viscosities, larger clearances than those given above are needed. When pumping hot (200’C or over) liquids use wider clearances to guard against possible pump seizure due to expansion.
End Clearance Distance measured between rotor and pump cover face. Total end clearance is the distance measured either side of the rotor and added together. Diametrical Clearance Distance measured around outside diameter of rotor and the inside diameter of body face.
END CLEARANCE END CLEARANCE
DIA
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 23
SEALING METHODS The shaft seal is often the most sensitive component in a pump as it must seal between a rotating shaft and the stationary pump housing. In general Albany provides three types of shaft sealing:
Mechanical Seal Design (picture shows optional thrust bearing) The mechanical seals consist of two parts.
1) Rotary face assembly with spring(s) fixed to drive shaft
2) Stationary face mounted to the clamp plate
Seal faces are lapped to high standards of flatness. Mating materials are chosen for long life operation in the pumped liquid by Albany and their seal supplier.
Packed Gland Design The packed gland seal is Albany’s most common form of shaft sealing for pumping applications.
Lip seal Design Lip seals are usually used on flange mounted and Pelton wheel driven pumps. Cartridge fitted lip seal assemblies with hardened sleeves are available for certain liquids. Lip seals retain the pumping liquid within the pump while keeping air, dust and dirt from entering along the rotating shaft.
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 24
SEALING METHODS MECHANICAL SEALS In practice seals leak tiny amounts of liquid particularly at start up. This leakage helps prolong the seal life. Should leakage be forbidden due to the liquid’s toxicity etc. Albany can fit double seals or magnet drives to its gear pumps. Note: The life of a mechanical seal depends on various factors such as cleanliness of liquid handled and its lubricating properties. Due to the variety of operating conditions it is, however, not possible to forecast its life. Single mechanical seal design Single seals are used on most hydrocarbon fluids of under 150°C as standard. We offer internal or external flushing, internal pressure reduction passages and heated or cooled seal housings as required by the application. Do not use carbon faces on applications where viscosities over 2000cst may occur. Use a pinned seat on liquids of over 750cst. Seal maintenance Detailed maintenance and operation information is available from our mechanical seal manufacturers. Mechanical seals should not be run dry. To avoid dry start up it is recommended that the pump cavity is filled with lubricating oil if possible or the duty fluid. Check both faces for wear or damage. Clean the housing, clamping plate and shaft. Remove any keyway burrs or damage to the drive shafts before re assembly. Avoid damage to the new seal O rings or rubber bellows. Check the shaft, to make sure it is not bent. Lubricate with light oil the faces and the shaft before carefully sliding the seal into the front cover of the pump. After re-fitting the pump to the bedplate check the coupling alignment, misalignment shortens seal life. Refit all recirculation, quench or cooling pipes if fitted. Re-prime the pump before start up.
1 Rotary face assembly with spring
2 Stationary face
3 Gasket
4 Clamping plate
5 Clamping plate fixing bolts
6 Thrust bearing (when supplied)
7 Shaft
Albany Eng
PACKED Packed glalubrication recommensometimes(sediments General G
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Maintenance
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Page: 25
METHODS
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 26
SEALING METHODS LIP SEALS In general, lip seals are more sensitive, than mechanical seals, to shaft run out and surface irregularities. A lip seal will often leak oil if the shaft has a total indicated run out of more than only a few thousands of an inch. A lip seal pump is provided with an internal passage connecting the suction side of the pump to the seal chamber. These pumps cannot run in two directions without modification or special order. These pumps must not be subjected to a static head of more than 0.34 bar g. If the system this pump is fitted to has to be hydrostatically tested the pump must be isolated from the test. Failure to do this will blow the lip seal out. Maintenance Remove any burrs or damage to the drive shaft before fitting a lip seal. Lubricate the new lip seal faces and the drive shaft with oil or grease before sliding the lip seal over the shaft.
1 Lip seal 2 Circlip / Seal Cover Plate 3 Shaft
Albany Eng
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Page: 27
F VALVES
temporarilyessive backy the pump.porary over
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Page: 28
F VALVES
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Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 29
RELIEF VALVES For replacement of the spring / relief valve (horizontal type RV):
1. Turn off power to pump & allow the pump to cool, vent pressure etc.
2. Measure distance ‘X’, slacken the locknut and then unwind adjusting screw (ITEM 1) to relieve spring tension, but do not remove completely.
3. Remove four cap screws (ITEM 4) from flange (ITEM 5), being very careful of any tension left in spring (ITEM 8).
4. Remove very carefully adjusting screw flange (ITEM 5) with the adjusting screw (ITEM 1), locknut (ITEM 2) and fibre washer (ITEM 3) still in situ. The gasket (ITEM 6), spring (ITEM 8) and relief valve (ITEM 9) should all come away with item 5. Take great care to ensure that all parts come out together & the valve does not drop down into the suction port of the pump.
5. Replace any parts & refit in the opposite sequence.
6. For the correct pumping duty to be achieved, the adjusting screw should be tightened until the correct length (distance ‘X’) that was measured when removing is achieved.
Item 10, 11 & 12 do not need to be removed from the pump body unless the pump rotation is to be changed, in which case they should be refitted to the port where the valve was removed.
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 30
SPARES & REPAIRS SPARES To ensure the correct spares are supplied we need to know the pump serial number which is stamped into the metal of the pump body, or cover, in a prominent position on the top area of the pump. Make sure that the correct spares are to hand before starting work on the pump. Contact our works if you need assistance before starting the job. If you are using a custom designed Albany pump we recommend that you stock non-standard parts. Horizontal RV Pump
1 Gland / Seal Housing 12 Locknut 2 Shaft Sealing * 13 Adjusting Screw 3 Front cover 14 Spring 4 Bushes – Front Cover* 15 Relief Valve 5 Rotors (2) * 16 Body 6 Key (2) 17 RV Flange 7 Driving shaft* 18 Bushes – Back Cover* 8 Spring Seat 19 Back cover 9 Gasket* 20 Body Gaskets *
10 Adjusting Screw Flange 21 Following Shaft * 11 Sealing Washer
Recommended spares (*)
21
34
56
7
2120
1312
1110
9
1415
1619
17 18
8
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 31
12
34
5
67
8
15
18
9
811
12
16
17
14
15
13
10
SPARES & REPAIRS Vertical RV Pump
1 Gland / Seal Housing 10 Body 2 Shaft Sealing * 11 Bushes – Back Cover* 3 Front cover 12 Back cover 4 Bushes – Front Cover* 13 Relief Valve 5 Driving shaft* 14 Spring 6 Rotors (2) * 15 Sealing Washer 7 Key 16 Locknut 8 Body Gaskets * 17 Adjusting Screw 9 Following Shaft * 18 Plug
Recommended spares (*)
REPAIRS Albany operates a repair service at our works and can quote for the repair of pumps returned to us for inspection. Pumps returned for repair must be cleaned of the pumped fluid. Where the nature of the fluid is not disclosed to us a HAZARD RISK DOCUMENT CERTIFICATE must be supplied with the pump proving no hazardous substances are present meaning that the pump is safe to work on. Motor Repairs: Use accredited competent engineers or repair shops. The user is responsible for the validity of Ex Certificates after repair.
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 32
INFORMATION ON ‘ALTERNATIVE’ ALBANY MODELS
Superimposed Remote Bearings Pumps are always provided with lubricators and these should be filled with Shell Alvania grease or equal. Pumps with remote bearings should be treated in the same way.
Pumps with Back Gears should have the gear case half filled with Shell Grease or equal.
Pumps with Reduction Gear Box, should have the gear box filled with Shell Omala or equivalent to sight level indicator when pump is not running.
Pumps With Ball and Roller Bearing lubricated by Product. These pumps must only be used on filtered, non abrasive fluids with lubricating properties. Maximum temperature is usually 120’C.
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 33
ATEX DIRECTIVE 94/9/EC (ATEX) Albany positive displacement rotary pumps are supplied to work in explosive atmospheres under duty conditions advised to us by the customer. Atex certified pumps are:-
1) for the conditions of service stated in the purchase order 2) for the gas group and temperature class stated on our nameplate
Any changes to the above must be approved by Albany in writing. A new declaration of conformity and a nameplate will need to be supplied by Albany. ATEX assessment Hazards ProtectionsExternal contact monitor pump temperature Mechanical contact
correct alignment of coupling support pipe work line up pipe work
Bearing failure monitor bearing temperature
Gasket check for leaks
Excess temperature
do not run dry check for excess pressure fit a liquid flush to the mechanical seal (API 1 or 13) or gland relief valve to be designed for external relief
Coupling failure correct alignment non sparking coupling is fitted
Mechanical contact non sparking guard fitted
Rotating parts guard of adequate strength
Static electricity bond pump set to earth
Explosive dust end user to monitor and clean pump and coupling
At start-up Check pump rotation is correct (2-3 seconds). Check flushing liquid to seal or gland is available at the pump. Check for alignment and a dust free coupling.
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 34
TROUBLE SHOOTING 1 No liquid delivered: (a) Pump not primed. (b) Suction lift too high. Check with a gauge at the pump suction (c) Wrong direction of rotation (d) Pump not rotating (failure of drive from prime mover) (e) Suction & Delivery pipes connected on wrong sides of pump 2 Not enough liquid delivered: (a) Air leaks in suction or through stuffing box (b) Speed too low (c) Suction lift too high, or not enough suction head (for hot liquids) (d) Foot valve too small or obstructed (e) Foot valve or end of suction pipe not immersed deeply enough (f) Piping improperly installed permitting air or gas to pocket in pump (g) Mechanical defects: Pump damaged Pump badly worn Packing defective (h) Relief valve not seating or jammed by foreign matter. (i) Relief valve set for too low a pressure. 3 Pump works for a while then loses suction: (a) Leaky suction lines (b) Suction lift too high (c) Air or gases in the liquid 4 Pump takes too much power: (a) Speed too high (b) Liquid heavier or more viscous than we quoted for (c) Suction or discharge line obstructed (d) Mechanical defects Shaft bent Rotating element binds Stuffing boxes too tight Misalignment due to improper connection of pipe lines or driver (g) Check pressure is being measured at the pump and not some distance away from the
pump thus ignoring pressure losses in piping, valves, etc. (h) Discharge pressure higher than quoted for. 5 Noisy pump: (a) Speed too high (b) Suction lift or viscosity too high (piping diameter too small) preventing filling of gear tooth
spaces (c) Wrong direction of rotation (Note: recesses in the pump covers to prevent hydraulic noise
operate only in one direction) (d) Badly supported pipes or bedplates causing resonant vibration. Rubber mounting can
help. (e) Relief valve chattering (f) Pressure too low: an increase in pressure can prevent gear noise in low pressure
applications (g) Worn pump, check for wear
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 35
TROUBLE SHOOTING 6 Excessive Gland leakage: (a) Packing hard and shafts scored (b) Pressure on pump too high or pressure relief passage blocked (c) Shaft run out excessive (d) When repacking a gland all the old packing must be removed. It is not good enough just
to add extra rings as the original packing becomes compressed 7 Excessive wear: (a) Abrasive liquid / Contaminated liquid (b) Excessive speed (c) Misalignment (d) Excessive loading on drive shaft, axial or radial (e) Pump is running dry (f) Viscosity less than stated 8 Motor running hot and overheating: (a) Back pressure too great (b) Incorrect supply voltage (c) Motor phasing (d) Pump operating outside temperature range (e) Air temperature too high (f) Motor covered in dust (g) Electrical connections not correct for starting method (h) Natural ventilation blocked 9 Pump overheating: (a) Re-circulating small amount of liquid (b) Over tight gland (c) Running dry (d) Pump out of alignment
Albany Engineering Co. Ltd Operating & Maintenance Manual (OMM-GP:1.0) Page: 36
CONTACTS
Albany Engineering Company Limited Church Road Lydney Gloucestershire GL15 5EQ England Telephone: +44 (0) 1594 842275 e-mail: [email protected]
For information about Albany pumps visit:
www.albany-pumps.co.uk
Albany Standard Pumps Richter Works Garnett Street BD3 9HB Telephone: +44 (0) 1274 725 351 e-mail: [email protected]
Notes: