Carrier CAPRI-280 Manuale di Servizio Scaricare il pdf (Pagina 22)

3 --- 2

INDICATION/ REFERENCE

TROUBLE POSSIBLE CAUSES PARAGRAPH

3.3 ABNORMAL PRE SSURE CONT’D

L ow suction pressure (cont’d) L ow refrigerant charge 4.10

Inoperative Evaporator Fan Motor(s) Check

Expansion valve malfunction 3.7

Restricted air flow Check

Low evaporator air flow Blower running in reverse Check

Dirty air filter Clean

Icing of coil Clean

Relay R3, R5, R7. or R13 (black board only) defective 2.3

Fuse F3, F4, F7, F8, F11, or F12 defective 2.3

Suction and discharge pressures

equalize when operating Compressor valves defective (O5G only) 4.10*

3.4 ABNORMAL NOISE AND VIBRATIONS

3.4.1 ABNORMAL NOISE

Compressor Loose mounting bolts 4.10*

Worn bearings 4.10*

Worn or broken valves 4.10*

Liquid slugging 3.7

Insufficient oil 4.10.2*

Clutch loose or rubbing Check

CondenserorEvaporatorfan Looseordefectivebearings Check/Replace

Blade Interference Check

Blade broken or missing Check

3.4.2 ABNORMAL VIBRATION

Compressor Loose mounting bolts 4.10

Evaporator or Condenser fan Bent shaft on motor Replace motor

Blade broken or missing Check

3.5 TEMPERATURE CONTROLLER MALFUNCTION

Will not control Controller defective R eplace

Sensor defective Replace

Defective wiring Check

*Refertotheapplicablecompressor servicemanualfor additionalservicingandspecifications.For 05GBuscompressors,refertoservicemanualT---199

and parts list T---200. For Sankyo compressors,refer to manufacture literature.

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 37 38

Nessun commento

Carrier CAPRI-280 Manuale di Servizio Pagina 22