Refrigerant System Component Specifications; Figure 1--3 Relay Board - Carrier EM-17 Operation And Service

1.4 REFRIGERANT SYSTEM COMPONENT
SPECIFICATIONS
a. Refrigeration Charge
Approximate R134a refrigerant charge will be be-
tween 14 and 19 pounds, dependent upon condens-
er type and placement.
b. Compressors
Model: 05G
No. of Cylinder: 6
Weight (Dry): 145 lbs. (66 kg) including clutch
Model: 05K
No. of Cylinder: 4
Weight (Dry): 108 lbs. (49 kg) including clutch
c. 05G Compressor - - Electric Unloader Pressure
Switches UPS1, UPS2 and UPS3 (See Table 1--3)
UNLOADER PRESSURE SWITCH - - Contacts Open/Close Settings [psig (kg/cm2)]
UPS1
Load Up Unload
(Opens) (Closes)
34 ±3
±
(2.5 0.21) (1.8
T--336
Figure 1- -3 Relay Board
Table 1- - 3 Unloader Pressure Switch Settings (R- - 134a)
Load Up
(Opens)
26 ±2 31 ±2
± ±
0.14) (2.2 0.14)
Refer to 05g or 05K Operation and Service
manuals for additional technical data, including
approved oils and oil capacity.
d. Thermostatic Expansion Valve
Superheat Setting: 10°F (5.6°C)
MOP Setting: 65.0 ±4 psig
e. Condenser Fan Switches
CFS1
Closes for 4 (DC12174) or 5 (DC12175) fan
operation:
100 ±10 psig
Opens for 2 fan operation: 80 ±15 psig
CFS2
Closes for high speed: 275 ±10 psig
Opens for Low Speed: 220 ±15 psig
f. Low Ambient Switch (LATH)
Opens at: 50 ±3_F ( 7.2_C)
Closes at: 60 ±3_F (12.8_C)
UPS2
Unload
(Closes)
23 ±2
±
(1.6 0.14)
1--4
SOCKET
NOTE
UPS3
Load Up Unload
(Opens) (Closes)
250 ±15 320 ±10
± ±
(19 1.1) (19
05/09
1.1)