APPENDIX B : COMPRESSOR DRIVEN AIRDRYER
20950 Issue 1 April 98 B--13
2000 HOUR MAINTENANCE
Thefollowingmaintenanceshouldbecarriedoutaftereach2000hours
of operating time. If the printer is in infrequent use, these should be
carried out every six months.
For access into the airdryer, unlock and open the door.
Note: The 2000 hour service kit is part number 30469
Manual Venting of Peltier Chamber
During the 2000 hour service the Peltier chamber must be vented
manually as follows:
(1) On the PCB, switch SW1 to the test position and place LK2 from
pins 3&4 to pins 1&2, (this opens the condensate drain every 6
seconds).
(2) Switch the airdryer on and leave for 30 minutes, or until no
moisture is expelled from the vent.
(3) Replace LK2 back to pins 3&4 and switch SW1 to normal.
Peltier Air Filter Replacement
WARNING: The airdryer must be switched off and power
removed.
Filter Replacement
Arrow showing
direction of flow
Filter
AD003--1
(1) Cut off each air tube at the filter. Use the face of the nut securing
the tube to the filter as a guide to make a clean, square cut.
(2) Discard the old filter.
(3) On the new filter, ensure that the tube nuts are fitted but not
tightened.
(4) Inspect the new filter to find the small arrow indicating the
direction of air flow.
(5) Push the pipe supplying air into the filter (from the Peltier
assembly)intothenutbehindthearrow. Pushthetubeintothenut
until it stops against the shoulder just inside the filter.
(6) Tighten the nut finger--tight, without excessive force, then tighten
the nut by half a turn with a spanner.
(7) Fit the tube taking air from the filter as in steps 5 and 6.
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