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SERVICE MANUAL
Model: HRF-660W/U
Chapter 1 General Information
1-1. General Guidelines
When servicing, observe the original l ead dress. If a short circuit is found, replace all p arts which have
been overheated or damaged b y the short circuit. After servicing, see to it that a ll the pr otective devices
such as insulation barri ers, insulati on p apers shields are pro perly inst alled. Af ter servicing, make the
following leakage current checks to prevent the customer from being exposed to shock hazards.
1) Leakage Current Cold Check
2) Leakage Current Hot Check
3) Prevention of Electro Static Discharge (ESD) to Electrostatic Sensitive
1-2. Insurance test
1. Check if there is any leak of current.
2. Cut out the power supply before the repair to avoid an electrical shock hazard.
3. In the case of a live-line test, insulating gloves should be worn to avoid potential electrical shock.
4. Confirm the rated current, voltage and capacity before testing with any kinds of instruments.
5. Watch if the upper door is open when you check something at a lower position.
6. Take out every part in the cabinet before moving the machine, especially things like panels (e.g. glass
shelf).
7. Please wear int act cotton gloves wh en repair an y parts of the evapor ator, so that scr atches by th e
sharp fins can be avoided.
8. If there is a breakdown with the refrigeration system, please surrender the machine to the service
center, else the leaked refrigerant may pollute the atmosphere.
9. The refrigerator use AC of 220V with a frequency of 50～60Hz.
10. A big fluctuation of voltage (exceed the range 187～242V) may cause a start failure of the refrigerator,
a burn -out o f the control p anel and compressor, or an abn ormal sound from the co mpressor in
operation. In this condition an automatic voltage regulator over 750W should be added.
11. Take care not to damage the supply line. Don't yank at the line; pull the plug out gently from the
receptacle. Don't press the line under the cabinet or step on it. Take care not to roll on or damage the
supply line when moves the machine from the wall.
12. In the case of leakage of inflammable gases like carbon monoxide, open the door and windows. Don't
pull out or insert the plugs of the appliance.
13. Don't touch the refrigeration surface of the freezing compartment when the refrigerator is in operation,
especially when your hand is wet, else you may be glued to the surface.
14. Pull out the plug of power suppl y du ring clearan ce or power out age. Wait at least fiv e minutes to
resume the power supply in order to prevent damage to the compressor caused by continuous restart.
Issue 2010-09-30
Rev. Ref1009S031V1
4
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