field change order - hewlett packardwhp-aus2.cold.extweb.hp.com/pub/scitex/hp_scitex_fresco... ·...

2-Sep-01 FCO Doc No.FC10-0006 of 16

International Customer Support

FIELD CHANGE ORDER

PRODUCT: NUR Fresco 1800

PART/ASSEMBLY: RSF Linear Encoder Beam

FCO KIT P/N: 10-0143

ISSUE DATE: 2-Sep-01

DESCRIPTION OF CHANGE: Applying positive air pressure to RSF Linear Encoder Beam.

APPLICABLE FOR S/N: Up to: Fresco 1800 # 10200

SOFTWARE AFFECTED: YES NO

IMPLEMENTATION: ON REQUEST IMMEDIATE NEXT CALL ON FAILURE

PREPARED BY: Alex Davidson

TYPE OF CHANGE: MANDATORY CONDITIONAL COST RELIABILITY PRODUCTION FUNCTIONALITY MAINTENANCE

MATERIAL DISPOSITION: N/A USE AS SPARE DISCARD ALL DISCARD SELECTIVELY (refer to Mat’l Disposition) SEND BACK FOR REWORK

PROJECT MANAGER: SIGNATURE/DATE

ENGINEERING MANAGER: SIGNATURE/DATE

ICS MANAGER: SIGNATURE/DATE

This document should be read carefully before implementing the Upgrade


Table of Contents

1. Reason for Change ................................................................................ 4

2. General ................................................................................................... 4

3. Estimated Installation Time................................................................... 4

4. Implementation...................................................................................... 4

5. Cleaning LE Beam Glass Scale and Read Head ................................... 4

6. Installing the Positive Pressure System............................................... 11

7. Testing.................................................................................................. 16

8. Logistics ............................................................................................... 17


List of Figures

Figure 1: Read head installed in LE beam.................................................... 5

Figure 2: Read Head (RH) removed from beam........................................... 5

Figure 3: RSF cleaning tool and locker pin .................................................. 6

Figure 4: RSF scale cleaning procedure ....................................................... 8

Figure 5: Pulling cleaning tool along beam .................................................. 9

Figure 6: Encoder RH -glass ruler position .................................................. 9

Figure 7: Space measurement between the RH and the LE beam .............. 10

Figure 8: Space measurement .................................................................... 10

Figure 9: RSF LE End Covers Integrated with Air Fitting......................... 11

Figure 10: RSF LE Left and Right End Covers.......................................... 11

Figure 11: T-connector position.................................................................. 12

Figure 12: Double attachment bracket ........................................................ 12

Figure 13: Pneumatics panel after installation............................................ 13

Figure 14: Tube Routes............................................................................... 13

Figure 15: Routing tubes to cable/tube duct ............................................... 14

Figure 16: Air supply attached to new Service end cover of LE beam ...... 14

Figure 17: Routing 5m tube underneath chassis beam ............................... 15

Figure 18: New triple clip strip in place under chassis beam ..................... 15

Figure 19: Tube route in Console Cabinet, refer to dotted line .................. 15

Figure 20: Routing tube to LE console end under X beam......................... 16


1. Reason for Change

Ink vapors enter the Linear Encoder Beam via the rubber lips on the underside of the beam. Ink coating on the glass scale inside the beam could result in printing disorders. This can be prevented by maintaining a positive air pressure within the beam.

2. General

This Field Change Order details the replacement of the covers at either end of the RSF Linear Encoder (LE) Beam with special covers with air-pressured fittings, and the connection of the end covers to the pneumatic panel. This will prevent penetration of beam by ink vapors and other dirt.

3. Estimated Installation Time

Three hours

4. Implementation

■ Product: NUR Fresco 1800.

■ Implementation: up to machine #10200.

5. Cleaning LE Beam Glass Scale and Read Head

A. Removing Existing Beam End Covers: Remove the existing beam end covers from both ends of beam (refer to Figure 1), by using 2.5mm Allen key to remove four screws at either end. Retain the Allen screws and discard the end covers.

B. LE Read Head Removal: Read Head (RH) removal must be performed, step by step, according to the following procedure in order to prevent damage to the RH or to the glass scale.

Caution: The LE beam contains a glass scale, which can easily be broken or scratched during insertion of the RH.

Remove the RH as follows:

1. Turn off the Printing heads (PH) power supply (35VDC) C.B (circuit breaker) located in the Drying cabinet.

2. Disconnect the RH ″D type″ connector from the J7 socket on the Motherboard.

3. Route out the RH cable from the PH carriage by cutting the tie wraps.


4. Using a 5mm Allen-key, remove the two screws securing the RH to the PH carriage bracket (refer to Figure 8) .

5. Slide the RH to the Service (left) side of the RSF Encoder.

Figure 1: Read head installed in LE beam

6. Gently slide the RH out of the LE beam, making sure that the RH is parallel to the beam (refer to Figure 2 and Figure 6).

Figure 2: Read Head (RH) removed from beam


C. Cleaning The RSF Glass Scale To clean the glass scale within the encoder beam , use only the items included in the kit (refer to Section 8, Logistics and to Figure 4 for details).

Figure 3: RSF cleaning tool and locker pin

Cleaning procedure: 1. Wrap a new square section of fiber-less cloth around the cleaning tool, leaving a

15mm overlap next to leading edge.

2. Insert locker pin into lips of leading edge, so as to secure cloth in place and fold cloth down around leading edge.

3. Moisten cloth at lips of leading edge with acetone.

4. Gently introduce cleaning tool into passage of encoder bar, leading edge first, starting from service end (left). By this manner, tool should now be wiping both sides of glass scale with cloth.

5. Using a smooth hand motion, use handle on tool to push it along the whole length of the encoder bar from left to right and out at the console end (refer to Figure 5).

Note: To ensure smooth movement of cleaning tool, pull it slightly downwards as you push it along the LE beam.

Locker Pin

Leading Edge of Cleaning Tool

Handle


Caution: Never move the cleaning tool in opposite direction, as this could leave dirt lines on the scale.

6. Repeat steps 3-5, adjusting the cloth each time, or replacing it, so that only a clean

section is in contact with glass scale. Do this at least five times, and more times if necessary, until cloth between leading edge lips comes out clean.

7. When cloth that is in contact with glass scale comes out clean, repeat steps 3-5 using clean, dry cloth, without acetone.

D. Cleaning the RSF Read Head (RH)

1. Moisten the fiber-less cloth with acetone.

2. Gently insert the moist cloth inside the RH reading area (refer to the dotted line in Figure 2).

3. Clean the RH reading area, using a smooth horizontal hand motion.

4. Repeat step 3, adjusting the cloth each time, or replacing it, so that only a clean section is in contact with reading area. Do this at least five times, and more if necessary, until cloth comes out clean.

5. When cloth comes out clean, repeat steps 3 using clean, dry cloth, without acetone.


15mm

Figure 4: RSF scale cleaning procedure


Figure 5: Pulling cleaning tool along beam

E. Reinstalling The RH Reinstall the RH as follows:

1. Gently slide in the RH, making sure that the bearings located on the RH are aligned with the glass scale (refer Figure 6).

Note: The RH is inserted from left to right, i.e. the electrical cable is facing toward the right hand side.

Figure 6: Encoder RH -glass ruler position


2. Before tightening the screws securing the RH to the PH carriage bracket, verify the following space measurements:

■ 1.5mm space between the RH and the Linear Encoder beam (refer to Figure 7).

■ 5mm space between the Linear Encoder beam and the PH carriage bracket (refer to Figure 8).

Figure 7: Space measurement between the RH and the LE beam

Allen Screws

PH Carriage

Figure 8: Space measurement between the LE beam and the PH carriage bracket


3. Using a 5mm Allen-key, tighten the two screws securing the RH to the bracket (refer to Figure 8).

4. Reroute the RH cable to the Motherboard using tie wraps.

Note: Ensure that the cable is routed flush to the PH carriage surfaces.

5. Connect the RH ″D type″ connector to J7 socket on to the motherboard.

6. Turn on the PH power supply (35VDC) C.B.

6. Installing the Positive Pressure System

A. Installing New LE Beam End Covers, With Air Fittings Using 2.5mm Allen key, install the new beam end covers provided in the kit at both the service and console ends of the LE beam.

Figure 9: RSF LE End Covers Integrated with Air Fitting

Note: Please note that there are two different LE end covers as shown below , in Figure 10.

Right Hand Side (Service Side) Left Hand Side

(Console Side)

Figure 10: RSF LE Left and Right End Covers


B. Installing Air Pressure Feed To LE Beam This section provides the procedure for connecting the LE Beam to the NUR Fresco′s existing pneumatic system.

1. Disable the main air pressure inlet, by pulling down the main air valve.

2. On the pneumatics panel in the drying system cabinet, locate the tube connecting the W roller valve with the W roller gauge & regulator.

Figure 11: T-connector position

3. Cut this tube at its mid point and reconnect ends to the two branches of the T-connector, from kit.

4. Fit 40mm tube section to stem of T-connector from kit (refer to Figure 11).

5. Fit other end of this short tube section to the inlet of the new Positive Pressure gauge & regulator from the kit (refer to Figure 13).

6. Detach High Purge regulator from bracket, using 33-34mm adjustable wrench.

7. Remove High Purge regulator attachment bracket from pneumatics panel, using 5mm Allen key to remove screws, and discard bracket. Replace in same location with new double attachment bracket (refer to Figure 12), from kit. Secure with the Allen screws.

Figure 12: Double attachment bracket

8. Attach the High Purge Regulator and the new Positive Pressure gauge & regulator to the double attachment bracket, using left and right holes respectively. Hand tighten the nuts (refer to Figure 13).

T-Connector

W-Roller Gauge & Reg.

W Roller Valve


9. To the two outlets of this new gauge & regulator, fit the two long tube sections (3.5m and 5m). Label the distal ends of both tubes to avoid mix up. These tubes will be routed to the new LE Beam end covers.

Positive Pressure Gauge & Regulator Outlet

Tubes

Input Tube

Figure 13: Pneumatics panel after installation

10. Enable main air pressure to the pneumatic panel.

11. Set the Positive Pressure regulator to 0.6 bar (8.7 PSI).

Note: Ensure that pressure measurement on Positive Pressure gauge is exactly 0.6 bar (8.7 PSI).

C. Routing The Air Pressure Tubes To Both Sides Of The LE Beam (Refer To ).

LE Beam

Service Side

Pneumatics Panel

Console Side

5 m Tube 3.5 m Tube

Figure 14: Tube Routes

1. Thread both tubes, all the way, through the opening above and to left to the pneumatics panel, together with all other air tubes.

2. Open panel of Side Service Area. Locate cable/tube duct at the back of Service Cabinet (refer to Figure 16).

3. Remove cover of duct and lay the 3.5m tube along full length of duct.


Backside of Pneumatics Panel

Positive Pressure Tubes

Duct

Figure 16: Routing tubes to cable/tube duct

4. Lay the 5m tube so that it enters duct, then thread free end through hole in chassis, located at back of middle of duct. Secure with tie wraps as required , but do not tighten in a way that could restrict air flow. Replace duct cover.

5. Route 3.5m tube underneath the X beam. Use T nuts, plastic tie mount ,M6screw and tie wraps (from kit) to secure tube in place.

Note: Use tie wraps and tie mounts from the kit to secure the tube along the route. Remove and replace old tie wraps as required.

6. Fit air tube to new beam end cover (refer to Figure 17). Ensure that tube is routed flush to wall of cabinet and chassis.

Figure 17: Air supply attached to new Service end cover of LE beam


Figure 18: Routing 5m tube underneath chassis beam

7. Route 5m tube onto underside of Chassis beam (refer to Figure 18).

Figure 19: New triple clip strip in place under chassis beam

8. Replace existing black double tube clip strip with triple tube clip strip from kit, using 1mm Allen key. Secure existing tubes and 5m positive pressure tube to beam (refer to Figure 19).

9. Route 5m tube through hole into motors cabinet. Route tube in U configuration through ducts in motors cabinet (refer to Figure 20). Replace covers of ducts.

5m

Figure 20: Tube route in Console Cabinet, refer to dotted line

5m Air Tube

Triple Clip Strip


10. Route tube via underside of X beam using provided clips and tie wraps (refer to Figure 21).

Note: Use tie wraps and tie mounts from the kit to secure the tube along the route. Remove and replace old tie wraps as required.

Figure 21: Routing tube to LE console end under X beam

11. Fit end of tube to Console end of LE beam.

12. Ensure that tube is routed flush to wall of cabinet and X beam.

7. Testing

1. Apply air pressure to the LE beam by adjusting Positive Pressure gauge to 0.6 bar (8.7 PSI).

2. Check that air is flowing evenly out of lower groove of LE beam.

3. Check the air connections for air leakage.

Note: The positive pressure should be applied during all printing time to protect RSF scale from dirt

5m Tube


8. Logistics

Installation kit for positive air pressure supply to RSF LE beam P/N: 10-0143 P/N Description Qty 00-14-00-101 1/8 Regulator 0-2 Bar 1 00-14-00-103 1/8 Pressure gauge 0-2.5 bar 1 000-14-00-004 1/8 Elbow male adaptor 6mm 1 000-14-00-050 Fitting standing T 6*1/8 1 000-14-02-033 Fitting T 6mm 1 000-14-01-008 Tube polyurethane 6mm black R. Side: 5m

L. Side: 3.5m Reg. To W Tube: 0.4 m

000-50-15-042 Tie wrap 10 000-50-15-097 Tie mount 10 000-14-00-187 Clip strips for tubes 2 Strips of 8 clips 000-61-20-007 T Nut M6 10 12-0030 Tie Mount Plastic 10 12-0031 Screw Hex Socket M6x12 10 25-0009 End Covers +Air inlet for RSF

Right 1

25-0010 End Covers +Air inlet for RSF Left

1

17-0308 Regulator bracket 1 FC10-0006 FCO positive air pressure supply to

RSF LE beam 1

RSF Glass Scale cleaning kit P/N: 10-0142 P/N Description Qty 10-0155 RSF Scale cleaning tool Assembly 1 SD10-0155 Service Document RSF cleaning 1 70-0027 Wiper (TEXWIPE) fibreless cloth 10

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