Daikin RR20AVAK/DX160181XM/AA Service Instructions Manual

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Daikin RR20AVAK/DX160181XM/AA Service Instructions Manual Manual pdf 4 page image

SAFE REFRIGERANT HANDLINGWhile these items will not cover every conceivable situation, they should serve as a useful guide.IMPORTANT INFORMATIONThe successful development of hermetically sealed refrigera-tion compressors has completely sealed the compressor'smoving parts and electric motor inside a common housing,minimizing refrigerant leaks and the hazards sometimesassociated with moving belts, pulleys or couplings.Fundamental to the design of hermetic compressors is amethod whereby electrical current is transmitted to thecompressor motor through terminal conductors which passthrough the compressor housing wall. These terminals aresealed in a dielectric material which insulates them from thehousing and maintains the pressure tight integrity of thehermetic compressor. The terminals and their dielectricembedment are strongly constructed, but are vulnerable tocareless compressor installation or maintenance proce-dures and equally vulnerable to internal electrical shortcircuits caused by excessive system contaminants.In either of these instances, an electrical short between theterminal and the compressor housing may result in the lossof integrity between the terminal and its dielectric embed-ment. This loss may cause the terminals to be expelled,thereby venting the vaporous and liquid contents of thecompressor housing and system.A venting compressor terminal normally presents no dangerto anyone, providing the terminal protective cover is properlyin place.If, however, the terminal protective cover is not properly inplace, a venting terminal may discharge a combination of(a) hot lubricating oil and refrigerant(b) flammable mixture (if system is contaminatedwith air)in a stream of spray which may be dangerous to anyone in thevicinity. Death or serious bodily injury could occur.Under no circumstances is a hermetic compressor to beelectrically energized and/or operated without having theterminal protective cover properly in place.See Service Section S-17 for proper servicing.WARNINGREFRIGERANTS ARE HEAVIER THAN AIR. THEY CAN "PUSH OUT" THEOXYGEN IN YOUR LUNGS OR IN ANY ENCLOSED SPACE. T O AVOIDPOSSIBLE DIFFICULTY IN BREATHING OR DEATH:•N EVER PURGE REFRIGERANT INTO AN ENCLOSED ROOM OR SPACE. BYLAW, ALL REFRIGERANTS MUST BE RECLAIMED.•I F AN INDOOR LEAK IS SUSPECTED, THOROUGHLY VENTILATE THE AREABEFORE BEGINNING WORK.•LIQUID REFRIGERANT CAN BE VERY COLD. T O AVOID POSSIBLE FROST-BITE OR BLINDNESS, AVOID CONTACT WITH REFRIGERANT AND WEARGLOVES AND GOGGLES. IF LIQUID REFRIGERANT DOES CONTACT YOURSKIN OR EYES, SEEK MEDICAL HELP IMMEDIATELY.•A LWAYS FOLLOW EPA REGULATIONS. NEVER BURN REFRIGERANT,AS POISONOUS GAS WILL BE PRODUCED.WARNINGSYSTEM CONTAMINANTS, IMPROPER SERVICE PROCEDURE AND/OR PHYSICALABUSE AFFECTING HERMETIC COMPRESSOR ELECTRICAL TERMINALS MAYCAUSE DANGEROUS SYSTEM VENTING.WARNINGT O AVOID POSSIBLE INJURY, EXPLOSION OR DEATH, PRACTICE SAFEHANDLING OF REFRIGERANTS.WARNINGT O AVOID POSSIBLE EXPLOSION, USE ONLY RETURNABLE (NOT DISPOSABLE)SERVICE CYLINDERS WHEN REMOVING REFRIGERANT FROM A SYSTEM.• E NSURE THE CYLINDER IS FREE OF DAMAGE WHICH COULD LEAD TO ALEAK OR EXPLOSION.• E NSURE THE HYDROSTATIC TEST DATE DOES NOT EXCEED 5 YEARS.• E NSURE THE PRESSURE RATING MEETS OR EXCEEDS 400 LBS.W HEN IN DOUBT, DO NOT USE CYLINDER.WARNINGTO AVOID POSSIBLE EXPLOSION:• NEVER APPLY FLAME OR STEAM TO A REFRIGERANT CYLINDER. IF YOUMUST HEAT A CYLINDER FOR FASTER CHARGING, PARTIALLY IMMERSEIT IN WARM WATER.• NEVER FILL A CYLINDER MORE THAN 80% FULL OF LIQUID REFRIGERANT.• NEVER ADD ANYTHING OTHER THAN R-22 TO AN R-22 CYLINDER ORR-410 A TO AN R-410 A CYLINDER. THE SERVICE EQUIPMENT USED MUSTBE LISTED OR CERTIFIED FOR THE TYPE OF REFRIGERANT USED.• STORE CYLINDERS IN A COOL, DRY PLACE. NEVER USE A CYLINDERAS A PLATFORM OR A ROLLER.WARNINGTHE UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (" EPA")HAS ISSUED VARIOUS REGULATIONS REGARDING THE INTRODUCTION ANDDISPOSAL OF REFRIGERANTS INTRODUCED INTO THIS UNIT. FAILURE TOFOLLOW THESE REGULATIONS MAY HARM THE ENVIRONMENT AND CANLEAD TO THEH IMPOSITION OF SUBSTANTIAL FINES. THESE REGULATIONSMAY VARY BY JURISDICTION. S HOULD QUESTIONS ARISE, CONTACT YOURLOCAL EPA OFFICE.3