Fisher & Paykel RF201A, Руководство по обслуживанию

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12.5 ACTIVE SMART PC/FC FAN MOTOR TESTER
Testing a PC or FC fan motor with a multi meter is not possible, due to the electronics contained within the
motor. The simple way to test a fan motor is to apply a DC voltage with a 9 volt battery. A test lead can be
made up as shown below that will test motors fitted with either the earlier Mini Mate-N-Lok plug or the later
Molex plug.
Parts required are:
Component Qty Part Number
Mini Mate-N-Lok 2 way housing plug 1 873988
Pin Connector 2 872957
Molex Plug Male 1 881593
Socket Terminal 2 881595
Retainer Molex 1 881594
A 9 volt battery terminal connector obtainable from any electronic goods supply store.
A 9 volt battery
NOTE: When wiring the plugs, ensure that the polarity is correct, as the motors will not run if the polarity is
reversed.
12.6 PRESSURE TESTING OF THE REFRIGERATION SYSTEM
The use of the in-line pressure gauge can speed up and eliminate the incorrect diagnosis of a leak within a
refrigeration system. In some cases it has been found to be the services manifold that was being used that
was leaking and not the system. There are very few parts on the in-line pressure gauge that can leak.
Rule one:
In pressure testing any cabinet, before disconnecting any joint please be 100% sure that it is not the joint that
is at fault, otherwise a lot of time can be lost looking for a joint/leak that doesn't exist.
Rule two:
Only use dry nitrogen to pressure test a system.
NOT REFRIGERANT OR COMPRESSED AIR.
NEVER OXYGEN
Rule three:
Don’t over pressurise the system. It could be dangerous.