HIGH VACUUM ROTARY VANE PUMPS -WIPED FILM APPARATUS-
-SHORT PATH DISTILLATION-
MEMBRANE VACUUM PUMPS, CHEMSTAR DRY -VACUUM PURGE OVENS-
CHEMICAL DUTY DRY MEMBRANE (DIAPHRAGM) VACUUM PUMPS
-ROTARY EVAPORATORS--FALLING FILM EVAPORATORS-
CHEMICAL DUTY DRY MEMBRANE (DIAPHRAGM) VACUUM PUMPS
-VACUUM FILTRATION TABLES--VACUUM FILTRATION SETUPS-
NEW PRODUCTS
• BTpro Chemical Duty Dry Membrane Vacuum Pumps, cUL• Chemical Duty Dry Membr. Pumps with XPRF Motors, cUL• CRVpro 48, CRVpro65 highest flow direct drive Vacuum Pumps, cUL• ProBoost Diffusion Pump• Chemstar Dry Chemical Duty, High Vacuum System
SUPPORT FROM WELCH-EXAMPLES
• 10 Tips for Long Service Intervals – Rotary Vane Pumps• Expert Support from Welch Area Sales Managers• Fast Delivery on Robust, High Performance Vacuum Pumps
VACUUM PUMPS FOR POST-EXTRACTION OIL
PURIFICATION AND DISTILLATION SELECTION CHART & SUPPORT GUIDE
-BOTANICALS INDUSTRY -
VACUUM PUMP SELECTION ASSISTANT
Wiped Film Apparatus
Pump Flow Rate Typical Apparatus Sizes
Recommended Vacuum Pump
Flow Rate Ultimate Vacuum Photo
118 LPM/4.1 CFM For 2-inch, (0.033 m2)
Apparatus
CRVpro6 #3061-01
118 LPM Flow Rate
0.0004 torr ultimate vacuum pressure, 115v/60hz Global Motor
363 LPM/12.8 CFM For 4-inch, (0.250 m2)
Apparatus
CRVpro16
#3161-01 #3162-01
363 LPM Flow Rate
0.0002 torr ultimate vacuum pressure,
-115v/60hz --230v, 50/60hz
627 LPM/22.1 CFM For 6-inch, (0.500 m2)
Apparatus
CRVpro30
#3301-01 #3302-01
627 LPM Flow Rate
0.0002 torr ultimate vacuum pressure,
-115v/60hz --230v, 50/60hz
957 LPM/34 CFM For 8-inch, (1.000 m2)
Apparatus
CRVpro48 #3487T-01
957 LPM Flow Rate 0.0002 torr ultimate vacuum
pressure, 3 phase motor, 240v/460v, 60hz
1,300 LPM/46 CFM Large Scale
Apparatus
CRVpro65 #3657T-01
1,300 LPM Flow Rate 0.0002 torr vacuum pressure
3 phase motor, 240v/460v, 60hz
Topic Techncical Support Notes
Expert Technical Support from
Welch
Contact your Welch Area Sales Manager for more from our library of technical support information, available for free to Welch customers. Setup, operating, cold-trapping, oil changes, leakproofing, increasing yield and productivity and purity.
VACUUM PUMP SELECTION ASSISTANT
Rotary Evaporators, Falling Film Evaporators
Pump Flow Rate Typical Apparatus Sizes
Recommended Vacuum Pump
Flow Rate Ultimate Vacuum Photo
25-40 LPM For Benchtop
Rotovaps
BTpro40 #7010-01
40 LPM Flow Rate
15 torr ultimate vacuum pressure, 115v/60hz, CSA Certified
50-70 LPM For 10L, 20L Rotovaps
BTpro70 #7020-01
70 LPM Flow Rate
15 torr ultimate vacuum pressure, 115v/60hz CSA Certified
100-170 LPM For 50L Rotovaps
BTpro100 #7030-01
100 LPM Flow Rate 6 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
170 LPM For 50-100L Rotovaps
BTpro170 #7040-01
170 LPM Flow Rate 6 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
170 LPM Falling Film Evaporators
BTpro170 #7040-01
170 LPM Flow Rate 6 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
170 & 220 LPM Falling Film Evaporators
Dry Membrane Pumps, 8-head
#BT2163B-01 #2163B-01 #2067B-01
BT2163B-01: 170 LPM x 6 torr, 115v, cUL
2163B-01: 170 LPM x 6 torr, 115v, NOT cUL
(while supplies last) 2067B-01:
222 LPM x 56 torr, 115v, cUL,
Topic Techncical Support Notes
Expert Technical Support from
Welch
Contact your Welch Area Sales Manager for more from our library of technical support information, available for free to Welch customers. Setup, operating, trapping, avoiding pump flooding/liquid ingestion, leakproofing, increasing yield and productivity and purity.
VACUUM PUMP SELECTION ASSISTANT Vacuum Purge Ovens
Pump Flow Rate Typical Apparatus Sizes
Recommended Vacuum Pump
Flow Rate Ultimate Vacuum Photo
35 LPM Small Vacuum Ovens
1.5 Cu Ft or less
DryFast Ultra #2042B-01
35 LPM Flow Rate
2 torr ultimate vacuum pressure, 115v/60hz, CSA Certified
65 LPM
Medium Vacuum Ovens 4.5 Cu Ft or
less
2052 #2052B-01
65 LPM Flow Rate
1.5 torr ultimate vacuum pressure, 115v/60hz cUL Certified
100 LPM Medium Vacuum Ovens 4.5 Cu Ft or
less
BTpro100 #7030-01
100 LPM Flow Rate 6 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
170 LPM Large Vacuum Ovens
10 Cu Ft or less
BTpro170 #7040-01
170 LPM Flow Rate 6 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
150 LPM Medium/Large
Vacuum Ovens 7.5 Cu Ft or Less
Chemstar Dry #2071B-01
150 LPM Flow Rate 0.050 torr ultimate vacuum
pressure, 115v/60hz
300 LPM Large Vacuum Ovens
12 Cu Ft or Less
Chemstar Dry #2081-01
300 LPM Flow Rate Under 0.050 torr ultimate vacuum
pressure, 115v/60hz
Topic Techncical Support Notes
Expert Technical Support from
Welch
All Purge Oven vacuum pumps MUST be cold trapped to prevent Terpene Ingestion. Contact your Welch Area Sales Manager for more from our library of technical support information, available for free to Welch customers. Setup, operating, trapping, leakproofing, increasing yield and productivity and purity. Welch also offers Explosion Proof motored vacuum pumps for C1-D1 rooms.
VACUUM PUMP SELECTION ASSISTANT
Vacuum Filter Setups/Tables
Pump Flow Rate Typical Apparatus Sizes
Recommended Vacuum Pump
Flow Rate Ultimate Vacuum Photo
1-3 Setups
Filter Funnels with Erlenmeyer Vacuum Flasks
BTpro40 #7010-01
40 LPM Flow Rate
15 torr ultimate vacuum pressure, 115v/60hz, CSA Certified
4-10 Setups
Filter Funnels with Erlenmeyer Vacuum Flasks
BTpro70 #7020-01
70 LPM Flow Rate
15 torr ultimate vacuum pressure, 115v/60hz CSA Certified
Filter Tables
1-3 place x 24 inch diameter
BTpro170 #7040-01
170 LPM Flow Rate 6 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
Filter Tables
1-3 place x 24 inch diameter, highest flow
Dry Membrane Pump, 8-head
#2067B-01
222 LPM Flow Rate 56 torr ultimate vacuum pressure,
115v/60hz C-UL-US Certified
Topic Techncical Support Notes
Expert Technical Support from
Welch
Contact your Welch Area Sales Manager for more from our library of technical support information, available for free to Welch customers. Setup, operating, overflow mitigation, safety, increasing filtration speed and aspiration speed.
© Gardner Denver Thomas Inc. All rights reserved. 03/2020 www.welchvacuum.com
New Products, cUL Listed, from Welch® Vacuum designed to improve cannabis processing
Introducing
Reliable and consistent results are paramount to your product’s quality. Reduce down-time and unsafe
conditions due to failed or troublesome equipment. The world famous Welch brand of laboratory vacuum
pumps have been the preferred vacuum pump for prestigious research facilities through generations.
Your lab deserves the best and gets it with Welch
Ingersoll Rand, Inc.
Medical Segment
1601 Feehanville Drive, Suite 600
Mt.Prospect, IL 60056
Tel: +1 847 676 8800
Models 2090W-01 & 2085W-01 with explosion proof motors,
cUL certification capable, 115/230V, 60Hz, 1ph
Models BTpro40 &170 with CSA listing; Models BTpro100 &
170 with cUL listing; 115V, 60Hz, 1Ph
Models 2052B-01 and 2054B-01 in stock,
cUL listing; 115V, 60Hz, 1Ph
CRVpro48 with 34 CFM, CRVpro65 with 46 CFM/-5%
(240-265)/(415-460)V +/-5% 60Hz 3P
Chemical Duty Diaphragm Pumps With Explosion Proof Motor
High Capacity Dry Diaphragm Vacuum Pump
BTpro Botanical Vacuum Pump Series
Two-stage Rotary Vane Vacuum Pump
© Gardner Denver Thomas Inc. All rights reserved. 1400011-20 03/2020 www.welchvacuum.com
Welch’s BTpro vacuum pump series has a flow and vacuum level
to provide fast performance for your size of rotary evaporator,
glass reactor, purge oven, or winterization filtration apparatus.
These chemical duty PTFE diaphragm pumps are oil-free.
The pumping action and deep vacuum comes from the movement
of PTFE diaphragms within PTFE heads. All wetted services in
the flow path are made of fluoroplastic making the BTpro pump
highly chemically resistant. As a result, the BTpro vacuum pump
series is near-zero maintenance. A cold trap placed in-line with
BTpro pump is needed if terpenes are part of the flow path.
The BTpro40 and BTpro70 models employ patented valve and
diaphragm technology that generates a deep 15 Torr vacuum
pressure with each PTFE head. In addition, both pump models
have built-in tuneable vacuum to control evaporation rate.
The tunable vacuum adjustment can also be used to stop
accidental bumping/foaming.
A chemically resistant, manual vacuum regulator with stainless
steel dial gauge is available for BTpro100. See ordering
information for further details.
AMERICA
Gardner Denver Thomas Inc.
1601 Feehanville Drive
Suite 550
Mt. Prospect, IL 60056
USA
Tel: +1 847 676 8800
Fax: +1 847 677 8606
BTpro Botanical Vacuum Pump Series
FEATURES & BENEFITS High flow for faster processing
Deep vacuum for higher purity
Chemically resistant for long service interval
Oil-free for low maintenance
Agency listing:
• BTpro40 & 70: CSA • BTpro100 & 170: cUL
For sales, service and technical support, please contact the
US factory at 847-676-8800 or contact your local Welch
sales representative.
BTpro40 & 70 BTpro100 & 170
Please check out all our brands for your mission-critical flow control technologies:
Vacuum Pumps & Systems
www.welchvacuum.com
OEM Pumps
www.gd-thomas.com
Syringes
www.microsyringes.com
Lab Automation
www.zinsser-analytic.com
Syringe Pumps
www.tricontinent.com
BTPRO & 2163 TECHNICAL SPECIFICATIONSMODEL BTPRO40 BTPRO70 BTPRO100 BTPRO170 2163
Free Air Displacement@60Hz, lpm (CFM) 40 (1.4) 70 (2.5) 100 (3.5) 170 (6.0) 170 (6.0)
Ultimate Vacuum Pressure, Torr 15 15 6 6 6
Maximum Vacuum, in. Hg 29.3 29.3 29.7 29.7 29.7
Horsepower, HP (watts) 1/5 (150) 1/5 (150) 0.5 (390) 0.6 (440) 0.6 (440)
Built-in adjustable vacuum Yes Yes – – –
Gas Ballast – – Yes Yes Yes
Head Material PTFE PTFE PTFE PTFE Coated Al
Diaphragm PTFE PTFE PTFE PTFE PTFE
Inlet/outlet Connection 3/8” barb 3/8” barb NW16 flange1 NW16 flange1 NW16 flange1
Agency (National Recognized Lab) CSA CSA cUL cUL cUL
Weight, lbs (kg) 15.0 (6.8) 21.3 (9.6) 40.3 (18.3) 72.3 (32.8) 72.3 (32.8)
Overall Dimensions
LxWxH in. (cm)
12x7x8.3
(31x18x22)
13.8x6.8x8.8
35x17x22)
9x15x7
(23x38x18)
21x11x12
(53x28x31)
21x11x12
(53x28x31)
Shipping Weight, lbs (kg) 19 (8.6) 25 (11.3) 48.5 (22) 88.2 (40.1) 88.2 (40.1)
Shipping Carton Dimensions
LxWxH in.(cm)
21x14x15
(52x35x37)
21x14x15
(52x35x37)
18.9x12.6x11.8
(48x32x30)
23.6x15.8x16.1
(60x40x41)
23.6x15.8x16.1
(60x40x41)
ORDERING INFO
115V 60Hz 1Ph with N.American plug 7010-01 7020-01 7030-012 7040-012 BT2163B-01
List Price, effect Jan. 1, 2020 $1,525 $2,790 $3,950 $4,375 $4,375
Note: 1. Two 3/8” hose barb fittings are provided that thread into NW16 flange to allow use of 3/8” ID hose. Note: 2. Export controlled. Shipper’s letter of intent required to ship pump model outside USA due to flow and and PTFE construction.
ACCESSORIES FOR BTPRO VACUUM PUMP SERIESUSE WITH DESCRIPTION CAT. NO.
BTpro40, 70,
100, 1703/8 in. ID gum rubber vacuum hose, 5 feet 331035-05
BTpro100Chemically resistant vacuum regulator with SS dial
vacuum gauge, – mountable horizontally or vertically 700458
331035-05 700458
© Gardner Denver Thomas Inc. All rights reserved. 1400011-20 03/2020 www.welchvacuum.com
Welch corrosion-resistant diaphragm vacuum pumps are
driven by explosion-proof motors rated for Class I Hazardous
Locations (HazLoc). The aluminum pump head is PTFE coated
and diaphragm is covered by a PTFE liner to separate chemical
media from the diaphragm. The explosion proof motor is
directly coupled to the diaphragm pumping module. Stainless
steel tubing is used to connect pump heads together in one and
two-stage configurations.
The vacuum pump doesn’t come with an on/off switch, plug or
cord, but must be conduit wired to the on/off explosion proof
control panel. Always use a certified electrician for proper
installation of vacuum pump with explosion proof motor to
meet your local municipal codes.
AMERICA
Gardner Denver Thomas Inc.
1601 Feehanville Drive
Suite 550
Mt. Prospect, IL 60056
USA
Tel: +1 847 676 8800
Fax: +1 847 677 8606
FEATURES & BENEFITS Corrosion-resistant
Flow from 4.5 to 6.9 cfm
Maximum vacuum to 29 in. Hg (25 Torr)
Fitted with Class I, Groups C&D
explosion proof motor
Portable
Models 2090/2085
Chemical Duty Diaphragm Pumps, cUL ListedWith Explosion Proof Motor
Contact your local Welch area sales manager for further information.
Please check out all our brands for your mission-critical flow control technologies:
SPECIFICATIONS AND ORDERING INFORMATIONMODEL 2085 2090
FAD, lpm (cfm) 195 (6.9) 127 (4.5)
Ultimate Pressure, Torr 100 25
Max. Vac., in. Hg 26 29
Head Material Coated PTFE Coated PTFE
Diaphragm liner PTFE PTFE
Valves Stainless Steel Stainless Steel
Inlet/Outlet connection NW25 NW25
Motor Type Ex Proof1 Ex Proof1
Motor HP 1/2 1/2
Electrical requirement 115/230V 60Hz 1Ph 115/230V 60Hz 1Ph
Agency Listing cUL cUL
Weight, lbs (kg) 54 (25.5) 54 (25.5)
Dimensions, LxWxH 27 x 11.3 x 11.3 24.6 x 11.1 x 11.3
ORDERING INFO
Cat. No. 2085W-01 2090W-01
Note: 1. Explosion proof motor (CSA,UL) is Class I, Groups C&D and Class II, Groups E, F&G.
13.3
27.0
9.3
INTAKE
EXHAUST
8.2
11.3
11.1
4.5
9.3
24.6
16.0 15.1
INTAKE
EXH
AU
ST
11.3
8.2
11.1
4.5
VACUUM REGULATOR WITH DIAL GAUGE
CAT. NO. 2090K-05
Chemical resistant, vacuum bleed valve regulator with dial
vacuum gauge to vary vacuum level to maximum vacuum
of pump. Use with cat. nos. 2090W-01 and 2085W-01.
NW25 connections.
100
10
10010 10001
1000
PU
MP
ING
SP
EE
D (
lpm
)
PUMPING SPEED vs. VACUUM
VACUUM PRESSURE (Torr)
2090W-01 2085W-01
2085W-01 2090W-01
Vacuum Pumps & Systems
www.welchvacuum.com
OEM Pumps
www.gd-thomas.com
Syringes
www.microsyringes.com
Lab Automation
www.zinsser-analytic.com
Syringe Pumps
www.tricontinent.com
© Gardner Denver Thomas GmbH. All rights reserved. 1400007-20 11/2019 www.welchvacuum.com
Gardner Denver Thomas Inc.
1601 Feehanville Drive
Suite 550
Mt. Prospect, IL 60056
Tel: +1 847-676-8800
Fax: +1 847-677-8606
Welch’s CRVpro 48 and 65 are robust, two-stage rotary
vane pumps designed for extended service intervals
while generating high ultimate vacuum pressure and
quick pump downs.
The pumps have forced oil lubrication to maintain
proper cooling of pump mechanism. With a focus on
cool running operation and large oil capacity separates
the CRVpro line from comparable competitive pumps.
NEW
NEW
Introducing the next two members of Welch’s CRVpro two-stage rotary vane vacuum pump family.
ROBUST VACUUM PUMPS BUILT
FOR LONG TERM OPERATION
IN DEMANDING APPLICATIONS
COOL RUNNING AND
LARGE OIL CAPACITIES
FOR EXTENDED SERVICE
INTERVALS
Please check out all our brands for your mission-critical flow control technologies:
Vacuum Pumps & Systems
www.welchvacuum.com
OEM Pumps
www.gd-thomas.com
Syringes
www.microsyringes.com
Lab Automation
www.zinsser-analytic.com
Syringe Pumps
www.tricontinent.com
COMMON APPLICATIONS FOR CRVPRO 48 & 65 Thin film coating
Refrigeration dehydration
Freeze drying
Vacuum drying
Degassing of transformer oils, epoxies, etc.
Distillation
Vessel or chamber evacuation
Backing pumps for blowers
USEAGE DESCRIPTION CAT. NO.
CRVpro 48 & 60Exhaust Filter made of carbon steel treated to resist corrosion,
NW40 flanges1417D-40
EXHAUST FILTER
CRVPRO 48 & 65 TECHNICAL SPECIFICATIONS1
SPECS CRVpro 48 CRVpro 65
Free Air Displacement @60Hz, CFM (lpm) 33.8 (957) 45.9 (1300)
Free Air Displacement @50Hz, m3/hr 48 (800) 65 (1083)
Total Ultimate Vacuum Pressure, Torr(mbar) 0.0015 (0.002) 0.0015 (0.002)
GB Open Full, Total Pressure, Torr (mbar) 0.004 (0.005) 0.005 (0.007)
Motor Pump RPM@60Hz 1720 1720
Motor Power, kw 1.5 2.2
Oil Capacity, liters 4.5 4
Intake Flange NW40 NW40
Exhaust Flange NW40 NW40
Noise Level, dBA 58 58
Ambient environmental temp 10 to 40 deg C 10 to 40 deg C
Dimensions, LxWxH, cm (in.)79.6x26.2x36.9
(29x9x15)
79.6x26.2x36.9
(29x9x15)
Weight, kg (lbs) 62.3 (137) 65.0 (143)
ORDERING INFORMATION CRVpro 48 CRVpro 65
Three phase; (230-240)/(380-420)V ±5% 50Hz (240-265)/(415-460)V ±5% 60Hz 3487T-01 3657T-01
Note: CRVpro 48 comes with two NW40 hinge clamps, two NW40 centering rings and 5 liters of Welch Premium Vacuum Pump oil (cat. no. 8995P-11)
Gardner Denver Thomas Inc. Tel: 1‐847‐676‐8800 1601 Feehanville Drive Fax: 847‐677‐8606 Suite 550 E‐mail: [email protected] Mt. Prospect, IL 60056 www.welchvacuum.com
ProBoostTM
• Deeper Vacuum for cleaner Distillate, faster
• Increases the flow and decreases the vacuum pressure of a vacuum pump
• Reach 2x10⁻⁵ torr ultimate vacuum
• Easily attaches to a Rotary Vane Pump
Figure 1: ProBoost connected to a
CRVpro 8 rotary vane pump
configured with optional pump
connection kit(cat. no. 1392K‐01) and
stainless steel high vacuum valve
(704523)
Model 1392
Welch’s ProBoost is an air cooled gas jet pump (commonly called a diffusion pump). The gas jet is formed by
directing boiling silicone vapors thru a hollow cone. Since there are no internal moving parts, the pump is very
simple. The pumping action commences when the vacuum pressure goes below 0.2 Torr (200 millitorr). On an
empty, leak free system, ProBoost backed by a rotary vane pump lowers the vacuum pressure to 0.00002 Torr
(20x lower in pressure than a 2‐stage rotary vane pump can do alone).
Automated shutdown process works through an embedded control board that disables heater and enables fan
during shutdown.
Gardner Denver Thomas Inc. Tel: 1‐847‐676‐8800 1601 Feehanville Drive Fax: 847‐677‐8606 Suite 550 E‐mail: [email protected] Mt. Prospect, IL 60056 www.welchvacuum.com
ProBoost Technical Specifications*
Specs Model 1392
Maximum Pumping Speed, Air 80 liters/sec
Ultimate Vacuum Pressure 0.00002 torr
Minimum Backing Pump FAD@60Hz 3 CFM
Maximum Discharge Pressure 0.2 torr
Heat‐up time 7 minutes
Inlet Connection NW50
Discharge Connection NW25
Silicone Oil Capacity* 25 ml
Cool down time 20 minutes
Pump dimensions: L x W x H 5.5 x 5.4 x 7.5 in
ProBoost weight lbs (kg) 5.6 lbs (2.5 kg)
Ordering Information
115V 60Hz 1Ph with N. American plug 1392B‐01
230V 50Hz 1Ph with Schuko plug 1392C‐02
*ProBoost comes with NW50 clamp, NW50 centering ring, NW25 clamp, NW25 centering ring, line cord, cooling fan, switch, and 100 ml of
Welch ProBoost Silicone Oil, Cat. No. 1391K. Pump connection kit is required to connect a ProBooster to a rotary vane pump.
Components Needed to Complete a High Vacuum System
Useage Description Consists Of Cat. No.
Connects ProBooster to CRVpro 4,6,8, 16, 24 and 30
Components needed to connect to rotary vane pump and neck booster inlet to NW25
(1)180° NW25 SS return, (2) SS NW25 centering ring assemblies, (2) NW 25 hinge clamps; (1) conical reducer NW25 to NW50
1392K‐01
Closes off ProBoost prior to releasing vacuum to still
Stainless Steel high vacuum butterfly valve
Very high conductance NW25 valve with quick open and close
704523
Alternative to rubber hose**
Flexible metal hose, 19.7 in Accordian metal tubing with NW25 flanges to connect ProBoost to Still
710762
**To achieve maximum performance with ProBoost with your still, Welch recommends NW flange connections and metal hose plumbing.
Consult with your Welch sales rep on vacuum system design.
10 TIPSTo ensure that your rotary vane pump works seamlessly
© Gardner Denver Thomas GmbH. All rights reserved. 1400004-20 4/2019 www.welchvacuum.com
GLOBAL HEADQUARTERS
Gardner Denver Thomas GmbH
Livry-Gargan-Str. 10
82256 Fürstenfeldbruck
Germany
Tel: +49 8141 2280 1000
Fax: +49 8141 8892136
1 CHOOSE THE RIGHT PUMP
The performance of your pump has to meet your
requirements. For example: A too large vacuum pump
can increase the likelihood of condensable vapors
bypassing trap and moving into vacuum pump oil.
2 PLACE THE PUMP IN CLOSE PROXIMITY
TO THE APPLICATION
To ensure your pump remains at the top of its
game, place your pump close to the application.
The connecting tube between it and the pump should
remain as close as possible. The performance of the
pump relies on the length of the hose and its inner
diameter. The smaller it is, the longer the pumping
down, and vice-versa.
3 USE AN EXHAUST FILTER
Using an exhaust filter on a rotary vane pump will
minimize the emission of oil mist from the exhaust port.
4 WARM UP THE PUMP
Let the pump warm up for 20 minutes with
the inlet blanked so that it can reach its operating
temperature. Running the pump before using it in
application will also extend the longevity of the pump
and ensure the appropriate vacuum level is reached
when starting the process.
5 USE A COLD TRAP
If you expect high vapor loads or solvents /
corrosives to pass through the pump, use a cold
trap. Using it will prevent solvents and water from
entering the pump and degrading the vacuum pump
oil, decreasing pump performance. Furthermore, cold
trapping improves pumping capacity and efficiency.
6 CHECK OIL REGULARLY
Do regular check-ups of the oil level. Depending
on the pumps operating conditions, checking the oil
should be done at regular intervals by looking at the oil
sight glass. The oil level should be at the upper marking.
This allows for better dilution of contaminants, optimum
operating conditions and minimizes the service needs.
7 CUSTOM-FIT YOUR OIL
Just like choosing the correct oil parameters for
your car’s engine, to ensure efficient operation and
maintenance, it is vital to choose the correct oil for
your pump. Directorr™ Premium vacuum oil has the
proper viscosity, low vapor pressure and chemical
stability to ensure that your CRVpro pump operates
at its peak performance level.
8 CHECK THE OIL QUALITY
Checking the quality of the oil regularly is vital for
preserving the top performance of your pump, just as
you check the level and color of oil in your car’s engine.
Did the oil color change from clear to cloudy? Are there
visible particles in the oil? If so, an oil change is necessary.
If you see that the oil is heavily contaminated, you should
flush the pump with fresh oil several times. If you are
a new pump user and unsure of how often you should
change the oil, settle for a once-a-month frequency,
then adjust according to the following principles:
• Has ultimate vacuum pressure gone up since the
oil was first changed?
• Is the oil dirty, brown, viscous or loaded with
condensed water?
• Does the oil have any odors picked up from the
vapors it has pumped?
If the answer to one of these questions is yes, then you
should change the oil more frequently.
9 PREVENTATIVE MAINTENANCE
If you should notice a pump performance
decrease, please order a maintenance kit and follow the
instructions on the service manual or contact us directly
for support. Scheduling routine pump maintenance saves
in the long run.
1
AVOID CORROSION
Consider running the pump with gas ballast
open when it is processing heavy vapor loads. After you
finish using your pump, run it for 30 minutes with the
inlet blanked and gas ballast valve open before shutting
it off. This will purge the pump of remaining water vapor
from the oil inside the pump and prevent corroding of
the pump.
3. 7.5.2.