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Service Handbook PURY-P400, P500YMF-C
Service Handbook PURY-P400, P500YMF-C
AIR CONDITIONERS CITY MULTI
Models PURY-P400, P500YMF-C
Service Handbook
HEAD OFFICE MITSUBISHI DENKI BLDG. MARUNOUCHI TOKYO 100-0005 TELEX J24532 CABLE MELCO TOKYO
Issued in Aug 2002 F1105-214(MDOC) New publication effective Aug 2002
Printed in Japan Specifications subject to change without notice.
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Contents 1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT ..... 3 [1] Storage of Piping Material................................................................. 4 [2] Piping Machining............................................................................... 5 [3] Brazing .............................................................................................. 6 [4] Airtightness Test ................................................................................ 7 [5] Vacuuming ..
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Contents 1 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT ..... 3 [1] Storage of Piping Material................................................................. 4 [2] Piping Machining............................................................................... 5 [3] Brazing .............................................................................................. 6 [4] Airtightness Test ................................................................................ 7 [5] Vacuuming ..
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Safety precautions Before installation and electric work Before installing the unit, make sure you read all the “Safety precautions”. The “Safety precautions” provide very important points regarding safety. Make sure you follow them. This equipment may not be applicable to EN61000-3-2: 1995 and EN61000-3-3: 1995. This equipment may have an adverse effect on equipment on the same electrical supply system. Please report to or take consent by the supply authority before connection to the
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11111 PRECAUTIONS FOR DEVICES THAT USE R407C REFRIGERANT Caution Do not use the existing refrigerant piping. Use a vacuum pump with a reverse flow check valve. • The vacuum pump oil may flow back into the refriger- • The old refrigerant and refrigerator oil in the existing ant cycle and cause the refrigerator oil to deteriorate. piping contains a large amount of chlorine which may cause the refrigerator oil of the new unit to deterio- rate. Do not use the following tools that have been used with
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[1] Storage of Piping Material (1) Storage location Store the pipes to be used indoors. (Warehouse at site or owner’s warehouse) Storing them outdoors may cause dirt, waste, or water to infiltrate. (2) Pipe sealing before storage Both ends of the pipes should be sealed until immediately before brazing. Wrap elbows and T’s in plastic bags for storage. * The new refrigerator oil is 10 times more hygroscopic than the conventional refrigerator oil (such as Suniso). Water infiltration in the refriger
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[2] Piping Machining Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flange connections. Use only the necessary minimum quantity of oil ! Reason : 1. The refrigerator oil used for the equipment is highly hygroscopic and may introduce water inside. Notes : • Introducing a great quantity of mineral oil into the refrigerant circuit may also cause a compressor failure. • Do not use oils other than ester oil, ether oil or alkylbenzene. –5–
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[3] Brazing No changes from the conventional method, but special care is required so that foreign matter (ie. oxide scale, water, dirt, etc.) does not enter the refrigerant circuit. Example : Inner state of brazed section When non-oxide brazing was not used When non-oxide brazing was used Items to be strictly observed : 1. Do not conduct refrigerant piping work outdoors on a rainy day. 2. Apply non-oxide brazing. 3. Use a brazing material (Bcup-3) which requires no flux when brazing between copp
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[4] Airtightness Test No changes from the conventional method. Note that a refrigerant leakage detector for R22 cannot detect R407C leakage. Halide torch R22 leakage detector Items to be strictly observed : 1. Pressurize the equipment with nitrogen up to the design pressure and then judge the equipment’s airtightness, taking temperature variations into account. 2. When investigating leakage locations using a refrigerant, be sure to use R407C. 3. Ensure that R407C is in a liquid state when chargi
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[6] Charging of Refrigerant R407C must be in a liquid state when charging, because it is a non-azeotropic refrigerant. For a cylinder with a syphon attached For a cylinder without a syphon attached Cylin- der Cylin- der Cylinder color identification R407C-Gray Charged with liquid refrigerant R410A-Pink Valve Valve Liquid Liquid Reasons : 1. R407C is a mixture of 3 refrigerants, each with a different evaporation temperature. Therefore, if the equipment is charged with R407C gas, then the refriger
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22222 COMPONENT OF EQUIPMENT [1] Appearance of Components Outdoor unit • PURY-P400·500YMF-C Propeller fan Fan motor Propeller fan Fan motor Heat exchanger(rear) Heat exchanger(front) Compressor Control box P400 TYPE P500 TYPE SV block 1 CS circuit 4–way valve Accumulator 4–way valve CV block 1 Compressor CV block 2 SV block 2 Drier Compressor –9–
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Controller Box RELAY board FANCON board (for MF3) Choke coil (L2) MAIN board INV board Magnetic contactor (52C2) SNB board Diode stack (DS) FANCON board (for MF2) G/A board Inteligent Power Overload relay (51C2) Module (IPM) Y-C board Magnetic contactor Noise filter Magnetic contactor (52C1) Capacitor (C2, C3) (52F) (NP) (Smoothing capacitor) –10–
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MAIN board • PUHY / PURY CNVCC4 Power source CNTR CNFC1 for control(5V) CNS1 CNS2 CN40 CN41 CNVCC3 Power Source for control 1-2 30V 1-3 30V 4-6 12V 5-6 5V CN51 Indication distance 3-4 Compressor ON/OFF 3-5 Trouble CNRS3 Serial transmission to INV board CN3D CN3S CN3N LD1 Service LED CN20 SW4 SW3 SW2 SWU2 SWU1 SW1 Power supply 3 L1 1 N –11–
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INV board CNVDC 1-4 DC-560V CN15V2 Power supply for IPM control CNVCC4 Power supply (5V) CNL2 Choke coil CNR CNVCC2 Power supply 1-2 30V, 1-3 30V CN52C 4-6 12V, 5-6 5V Control for CNDR2 52C Out put to G/A board CNFAN Control CNTH for MF1 CNAC2 Power source SW1 CNACCT 1 L2 CNRS2 3 N Serial transmission 5 G to MAIN board –12–
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FANCON board CNPOW CNFAN CNFC2 G/A board CNE CNDC1 CN15V1 CNIPM1 CNDR1 –13–
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SNB board Y-C board –14–
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BC controller CNTR CN12 CN02 Power M-NET supply transmission 1 EARTH 3 N 5 L CN03 SW4 SW5 SW2 SW1 –15–
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RELAY 10 board RELAY 4 board –16–
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[2] Refrigerant Circuit Diagram and Thermal Sensor : Solenoid valve : Orifice PURY-P400, 500YMF-C : Capillary : Check valve : Thermal sensor : Strainer SP : Service port ACC : Accumulator –17– 21S4b SV Block 2 21S4a SV8 SV7 CV7b ST2 SV4a ST5 CJ1 SV Block 1 HEXb2 HEXf4 63HS CJ2 SV6a O/S SV3 SV5 SV4 SV6 CP1 ST6 63LS CV7a SV1 TH7 SV22 SV32 CP3a CP3b TH11 TH12 HEXf3 HEXb1 CV1a CV1b TH6 ST15 63H1 63H2 SA MA HEXf2 Comp2 CV5b Comp1 SLEV CJ3 CV4b HEXf1 ST9 CV2b CV3b CV6b TH4 S
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CMB-P108, 1010, 1013, 1016V-FA : Solenoid valve : Orifice : Capillary : Check valve : Thermal sensor : Strainer –18– Solenoid valve block TH15 LEV3 SVM2 TH12 TH11 Gas/liquid LEV1 TH16 separator Check valve block PS3 PS1 SVM1
