Thermo King 920000, Manual

Page: 20 / 190

Specifications
20
Belt Tension
Tension No. on TK Gauge 204-427
New Belt Field Reset
Engine/Compressor 75 ± 3 70 ± 3
Compressor/Jackshaft (Electric Motor) 72 ± 3 67 ± 3
Compressor/Evaporator Fan/Alternator 55 ± 5 50 ± 5
Water Pump 50 ± 5 50 ± 5
NOTE: These are the original factory settings. Because it is difficult to use the
TK gauge 204-427 in the field, adjust each belt to allow 1/2 inch (13 mm)
deflection at the center of the longest span.
NOTE: Belts should be tensioned cold and again tensioned cold after 10 hours
of unit running.
Electrical Control System
Control System Voltage 12.5 Vdc
Control Circuit Fuse F1 (2 Circuit) 60 amps
Main Circuit Breaker 50 amp auto reset
Control Circuit Breaker 30 amp auto reset
Evaporator Circuit Breaker 40 amp auto reset
Fan Circuit Breaker 30 amp auto reset
7X-CH (F1) 3 amps
Alternator 90 amp brush type with integral alternator
Voltage Regulator Setting 14.1 ± 0.2 Vdc @ 77 F (25 C)
Alternator/Regulator LED Capacitor 4.7 µfd 50 Vdc
Alternator/Output Capacitor 0.5 µfd 100 Vdc
Unloading Timer 20 ± 5 seconds
NOTE: Disconnect components from unit circuit to check resistance.