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11 SERVICING PROCEDURES
11.1 Safety Considerations
CAUTION
ALL TERMINALS AND INTERNAL PARTS SHOULD BE
TREATED AS ALIVE.
ALL SERVICING SHOULD BE CARRIED OUT WITH THE REFRIGERATOR
DISCONNECTED FROM THE POWER SUPPLY.
Before servicing this appliance, your body should be at the same voltage potential. An antistatic
wrist strap must be used when handling electronic components.
Printed circuit boards removed from the refrigerator for return to Fisher & Paykel must be protected
from possible electrostatic damage (ESD) while in transit by the use of the specialised packaging
in which the replacement was received.
ELECTROSTATIC DISCHARGE SENSITIVE DEVICES
Diagram
11.1
11.2 Electrical Safety Test
Whenever any part of the electrical circuit is serviced or disturbed in the course of carrying out
service adjustments or procedures, it is essential that an insulation and earth continuity test be
carried out using a two-scale insulation tester. This is to be done with the appliance disconnected
from power.
Insulation: At least 1 megohm
Earth Continuity: No greater than 0.5 ohm
Note: Electronic printed circuit boards can be damaged if tested incorrectly, such as phase/earth
or neutral/earth.
Therefore to carry out an insulation test where the appliance is fitted with a electronic printed circuit
board, short out both the phase and neutral conductors together at the 3 pin plug with one test lead
of the insulation tester. Connect the other lead of the insulation tester to the earth pin/cabinet of
the refrigerator under test.
Earth continuity can be measured between the earth pin on the 3-pin plug and the cabinet of the
refrigerator.
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