CSCF R-22 Service Manual

SERVICING
35
Table of Contents
HIGH VOLTAGE!
DISCONNECT ALL POWER BEFORE SERVICING OR INSTALLING THIS
UNIT. MULTIPLE POWER SOURCES MAY BE PRESENT. FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
S-1 CHECKING VOLTAGE ............................................ 36
S-2 CHECKING WIRING ................................................ 36
S-3 CHECKING THERMOSTAT, WIRING,
AND ANTICIPATOR ................................................. 36
S-3A THERMOSTAT AND WIRING ................................... 36
S-3B COOLING ANTICIPATOR ......................................... 37
S-3C HEATING ANTICIPATOR ......................................... 37
S-4 CHECKING TRANSFORMER AND
CONTROL CIRCUIT ............................................... 37
S-5 CHECKING CYCLE PROTECTOR ........................ 37
S-6 CHECKING TIME DELAY RELAY............................ 38
S-7 CHECKING CONTACTOR AND/OR RELAYS ........ 38
S-8 CHECKING CONTACTOR CONTACTS ................. 38
S-9 CHECKING FAN RELAY CONTACTS ..................... 38
S-10 COPELAND COMFORT ALERT™ .......................... 39
S-11 CHECKING LOSS OF CHARGE PROTECTOR .... 41
S-15 CHECKING CAPACITOR ........................................ 41
S-15A RESISTANCE CHECK ............................................ 41
S-15B CAPACITANCE CHECK .......................................... 42
S-16A CHECKING FAN AND BLOWER
MOTOR WINDINGS
(PSC MOTORS) ...................................................... 42
S-16B CHECKING FAN AND
BLOWER MOTOR (ECM MOTORS) ....................... 42
S-16C CHECKING ECM MOTOR WINDINGS ................... 43
S-16D ECM CFM ADJUSTMENTS ..................................... 43
S-16E CHECKING GE X13TM MOTORS .......................... 47
S-17 CHECKING COMPRESSOR .................................. 47
S-17A RESISTANCE TEST ................................................ 47
S-17B GROUND TEST ...................................................... 48
S-17D OPERATION TEST .................................................. 48
S-18 TESTING CRANKCASE HEATER
(OPTIONAL ITEM) ................................................... 49
S-21 CHECKING REVERSING VALVE AND SOLENOID . 49
S-24 TESTING DEFROST CONTROL ............................ 49
S-25 TESTING DEFROST THERMOSTAT ...................... 49
S-40 AR*F & MBR ELECTRONIC BLOWERS
TIME DELAY RELAY ................................................ 50
S-41 AEP* & MBE WITH SINGLE STAGE
CONDENSERS ...................................................... 51
S-41A A AEP* & MBE WITH SINGLE STAGE
HEAT PUMPS .......................................................... 52
S-60 ELECTRIC HEATER (OPTIONAL ITEM) ................ 53
S-61A CHECKING HEATER LIMIT CONTROL(S) ............ 54
S-61B CHECKING HEATER FUSE LINK (OPTIONAL
ELECTRIC HEATERS) ........................................... 54
S-62 CHECKING HEATER ELEMENTS
......................... 54
S-100 REFRIGERATION REPAIR PRACTICE .................. 55
S-101 LEAK TESTING (NITROGEN OR
NITROGEN-TRACED) ............................................ 55
S-102 EVACUATION .......................................................... 55
S-103 CHARGING ............................................................. 56
S-104 CHECKING COMPRESSOR EFFICIENCY............ 57
S-105A PISTON KIT CHART FOR ASC13, GSC13, VSC13,
GSC14, ASH13, GSH13, VSH14, GSH14 UNITS .. 58
S-105B THERMOSTATIC EXPANSION VALVE ................... 58
S-106 OVERFEEDING ...................................................... 59
S-107 UNDERFEEDING ................................................... 59
S-108 SUPERHEAT .......................................................... 59
S-109 CHECKING SUBCOOLING.................................... 60
S-110 CHECKING EXPANSION VALVE OPERATION ....... 60
S-111 FIXED ORIFICE RESTRICTOR DEVICES ............. 61
S-112 CHECKING RESTRICTED LIQUID LINE .............. 61
S-113 OVERCHARGE OF REFRIGERANT ...................... 61
S-114 NON-CONDENSABLES ......................................... 61
S-115 COMPRESSOR BURNOUT ................................... 61
S-120 REFRIGERANT PIPING ......................................... 62
S-122 REVERSING VALVE REPLACEMENT .................... 64
S-202 DUCT STATIC PRESSURES AND/OR
STATIC PRESSURE DROP ACROSS COILS ........ 64
S-203 AIR HANDLER EXTERNAL STATIC ........................ 64
S-204 COIL STATIC PRESSURE DROP .......................... 65