Specifications (Rev. 04/03)
2
R-134A REFRIGERATION SYSTEM
Compressor Model X426
Refrigerant Charge 9 lb. (4.1 kg) R-134a
Compressor Oil Charge 4 qt. 6 oz. (3.9 liters)*
Compressor Oil Type: R-134a (Solest 35) TK No. 203-413 (Ester base) required
Throttling Valve Setting 18 to 20 psig (124 to 138 kPa)
Heat/Defrost Method: Engine Operation
Electric Operation
Hot gas
Hot gas and optional electric heater strips (Model 50)
High Pressure Cutout 325 +25/-0 psig (2088 + 172/0 kPa)
Automatically reset @ 200 ± 20 psig
(1379 ± 138 kPa)
R-404A REFRIGERATION SYSTEM
Compressor Model X426
Refrigerant Charge 8 lb. (3.63 kg) R-404A
Compressor Oil Charge 4 qt 6 oz. (3.9 liters)*
Compressor Oil Type (Solest 35) TK 203-413 (Ester required)
Throttle Valve Setting 18 to 20 psig (124 to 138 kPa)
Heat/Defrost Method: Engine Operation
Electric Operation
Hot gas
Hot gas and optional electric heater strips (Model 50)
High Pressure Cutout 470 ± 7 psig (3241 ± 48 kPa)
Automatically reset @ 375 ± 38 psig
(2585 ± 262 kPa)
*When the compressor is removed from the unit, oil level should be noted or the oil removed from the
compressor should be measured so that the same amount of oil can be added before placing the
replacement compressor in the unit.
ENGINE CLUTCH—HILLIARD
Model TK No. 107-257 (Dwg. No. 5D44655G01)
Engagement 900 ± 100 rpm
Dynamic Torque 66 ft-lb (89.5 N•m) minimum @ 1600 rpm
ELECTRICAL CONTROL SYSTEM
Control System Voltage 12.5 Vdc
Battery Charging System 12 V 23 amp brush type integral alternator
Voltage Regulator Setting 14 V @ 70 F (21.1 C)
Alternator/Regulator Capacitor 4.7 mfd 50 Vdc
Alternator/Output Capacitor .5 mfd 100 Vdc
NOTE: Disconnect components from unit circuit to check resistance.
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