1-5
1.2 REFRIGERATION SYSTEM COMPONENT
SPECIFICATIONS
a. Refrigeration Charge
R-134a:16lb.(7.3 kg)
b. Compressor
Model: 05G
No. of Cylinder: 6
Weight (Dry): 165 lbs. (75 kg),
including clutch
Oil Charge: 6.75 pints (3.2 liters)
Oil Level:
Old Crankcase (before S/N 4994J):
Bottom to 1/4 of sight glass
New Crankcase (beginning S/N 4994J):
Between Min---Max marks on crankcase
Approved Compressor Oils:
R-134a Unit:
Castrol: Icematic SW68C
Mobil: EAL Artic 68
ICI: Emkarate RL68H
c. Thermostatic Expansion Valve
R-134a TXV:
Superheat Setting: 6_ F (-14.4_ C) to 16_F
(-8.9_C), at 40_F
(4.4_C) evap. temp.
MOP Setting: 53.9 4psig
(3.8 0.28 kg/cm@)
d. Low Pressure Switch (LPS)
R-134a Unit:
Opens at: 10 3psig
(0.70 0.21 kg/cm@)
Closes at: 25 3psig
(1.8 0.21 kg/cm@)
e. High Pressure Switch (HPS)
R-134a:
Opens at: 425 10 psig
(30 0.7 kg/cm@)
Closes at: 300 10 psig
(21 0.7 kg/cm@)
f. Unloader Pressure Switch #2 (UPS2)
R-134a Unit:
Opens at: 40 5psig
(2.8 0.35 kg/cm@)
Closes at: 23 3psig
(1.6 0.21 kg/cm@)
g. Condenser Fan Speed Switch (CFS)
R-134a Unit:
Opens for high speed: 250 10 psig
(17.6 0.7 kg/cm@)
Closes for low speed: 190 15 psig
(13.4 1kg/cm@)
h. Low Ambient Switch (LATH)
Opens at: 45 5_F
(7.20.35_C)
Closes at: 55 5_F
(12.8 0.35_ C)
i. Reheat Coolant Valve
Coil Voltage 24- vdc
MOPD: 35
Capacit y: 10-GPM @
3psigαP