TIB641 - ValueJet VJ-426UF - How to replace the circulation pump

Modified on Thu, 28 Nov, 2019 at 10:31 AM

Important

Make sure to install the latest firmware (VJ-426UF or VJ-1626UH) before replacing the circulation pump.

In order to perform this replacement in a safe way, make sure to have at hand:

Safety goggles
Stainless tray
Phillips screwdriver No.2
Tube cutter

Note

Make sure to empty the waste tank after discharging the ink.

Replacing the circulation pump (VJ-426UF)

● Jigs & Tools & Maintenance Parts

Name	No.
Circulation Pump Assy (426） TIP: In this section, it is referred to as circulation pump.	Check spare part list VJ-426UF
Ink cartridge	-
Safety goggles	-
Plastic groves	-
Rubber gloves	-
Apron	-
Stainless tray	-
Cellophane sheets (yellow)	-
Phillips screwdriver No.2	Commercially available items
tube cutter	Commercially available items

CAUTION

The UV ink has strong skin sensitizing property.Always wear protective plastic gloves, rubber gloves, an apron and safety goggles during maintenance to avoid the skin contact with the UV ink.
Wear the supplied gloves as shown to the right (with the rubber gloves on top).
Ink may be cured by exposure to UV light. Keep away from UV light or direct sunlight during maintenance.

TIP: The total amount of ink used: about 350ml

1 When the printer is in the operation mode or in the self-diagnosis menu mode, press the [Power] key to turn off the printer.

2 While holding down the [ - ], [ + ], and [>] keys on Operation panel simultaneously, press the [Power] key. The system will transit to the self-diagnosis menu display mode.

3 Perform ink drainage operation and drain ink from all the ink path.

Note: after discharging ink, make sure that all cartridges are removed.

4 Turn off the printer.

5 Remove any cables connected to the printer.

6 Remove the screws (x3) retaining the side cover L.

A : Tapping screw M4ｘ10　S Tight cup

7 Remove the screws (x2) retaining the side cover L.

A : Tapping screw M4ｘ8 S Tight Bind

8 Move the table by hand to the back.

9 Remove the screw retaining the side cover L.

A : Tapping screw M4ｘ12 PTight Bind

10 Move the table by hand to the front.

11 Lower the table downward.

12 Remove the screw retaining the side cover L.

A : Tapping screw M4ｘ12 PTight Bind

13 Remove Side Cover.

Pull horizontally on the outside.
TIP: When removing the side cover L is difficult, loosen the screw (x1) retaining the front cover.

A : Tapping screw Ｍ4ｘ8 Ｓ tight bind

14 Put cellophane sheets (yellow) to the printer body with tape.

Note: This work is to block the UV light.

15 Remove the cable from the clamp on the back side of the circulation pump.

A : Clamp
B : Cable

Note: when reassembling > wind the cable around the clamp twice.

16 Remove the circulation pump relay cable.

A : connecting point

17 Remove the cables from the edge saddle.

A : Edge saddle
B : Cable

18 Remove the screws (x2) retaining the circulation pump.

A : Pan-head screw with spring washer and flat washer M3ｘ10

19 Remove the ink tubes (x3) from the L joint and T fitting.

A : Ｌ joint
B : Ｔ fitting
C : Ink tube

Note:
• Mark the place to which tube is attached.
• Residual ink may be discharged from the tubes. Place a stainless steel plate, waste cloth or waste media under the tubes during maintenance.

20 Cut the tip of the removed ink tube (x3). （the position of 3mm from the tip）

C : Ink tube

Note:
• Use a tube cutter.
• Correctly cut the tube at 3mm from the tip. If not, the tube cannot be properly connected and it may cause ink leakage.

21 Replace the circulation pump.

22 Wipe out ink or cleaner on the ink tubes.

Note: If ink or cleaner was left on the tubes, it may lead to broken tube and cause ink leakage.

23 To reassemble unit, reverse the removal procedure.

24 Connect the power cable to the printer main body.

25 While holding down [<] key, [Setting/Value-] key and [>] key on Operation panel simultaneously, press [Power] key.
The operation panel displays the maintenance mode 2 menu.

26 Initialize the life counter of the circulation pump (C Pump).

27 Turn off the printer.

28 While holding down the [ - ], [ + ], and [>] keys on Operation panel simultaneously, press the [Power] key.
The system will transit to the self-diagnosis menu display mode.

29 Charge the ink.

The replacement work is now completed.

Article changes

Revision 1.0 : 04 December 2015 - Initial release
Revision 2.0 : 21 November 2019 - Article content has been modified. Part numbers KY-91021 and DG-46566 have been removed: obsolete. Use the correct part number from the latest VJ-426UF & VJ-626UF sparepart list revision.