Appliance Desk 4000, Руководство по обслуживанию

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13.3
The venting fan is defective
: Check for the resistance of this fan, the readings should
be about 1.2MΩ (forward resistance) or 144MΩ (backward resistance). If not, please
replace a new venting fan.
How To Replace A New Venting Fan?

Power off and unplug the unit.

Remove two screws and washers on the rear side of work top. Lift the work top up a little by
holding its rear side, and then push it towards the door to remove the work top.

Remove the exhaust duct from the connector, and disconnect the terminals.

Remove the duct connector by removing four screws (see figure below).

Disassemble the venting fan and its holder by removing four bolts, which fix them on the cabinet.

Replace a new one and re-assemble the venting fan and its holder carefully, and then connect its
terminals.
Before removing the connector After removing the connector
14. Condensing moisture on VFD/Lens.
14.1
Ambient humidity too high:
Re-install the unit in a dry and ventilated place.
14.2
Hot air escapes from the heater chamber:
Disassemble the top section of heater
chamber by unscrewing five screws, and then re-assemble them with painting some silicon
sealant on the mating surfaces.
15. Unreadable display on VFD
15.1
Bad connection with the communication cable:
Check for this cable, and re-insert
the terminals on the display board and electronic module.