REF12 LB
19
HIGH PRESSURE VAPOR
HIGH PRESSURE LIQUID
LOW PRESSURE LIQUID
LOW PRESSURE VAPOR
FILTER-DRIER
COMPRESSOR
EVAPORATOR
CAPILLARY TUBE
CONDENSER
Component Details
Compressor amperage
RLA - 2 .9A, LRA - 29A
Compressor winding resistances
C-S (9 .1Ω), C-R (2 .0Ω)
Evaporator fan motor amperage
FLA - 0 .18A
Condenser fan motor amperage
FLA - 0 .4A
Refrigeration Pressure
Condenser inlet air temperature
80 F (26 .7 C)
Discharge pressure (psi)
145
Suction pressure (psi)
35
Defrosting
This equipment utilizes a hot gas defrost cycle to keep the evaporator coil clear of ice . For every 10 hours of
compressor run time the system will initiate a defrost .
When the defrost cycle is initiated both the evaporator fan and condenser fan cycle off while the compressor
continues to run . The defrost solenoid opens to allow the hot compressor discharge vapor to bypass the
condenser coil, instead directing it to the evaporator coil . When the evaporator coil temperature reaches 5 C
(41 F), when read by the P2 defrost probe, the defrost solenoid closes and the compressor turns off . The system
then enters a 60 second drip cycle . Upon completion, the compressor and condenser fan are re-energized and
start to cool the evaporator coil . When the evaporator coil reaches –5 C (23 F), read by the P2-Defrost probe, the
evaporator fan re-energizes and the cooling cycling begins .
Summary of Contents for REF 12-LB Series
Page 23: ...REF12 LB 23 Wiring diagram...
Page 27: ...REF12 LB 27...
