A LOOK AT SERVICE SAFETY
Servicing
73
Step 6: Add Start Assist Kit
If the compressor checks out satisfactory on all the above PSC
tests, but still doesn’t operate, add proper start assist kit to pro-
vide additional starting torque. See Figure 4-11 for proper wir-
ing.
Step 7: Continue Troubleshooting
If all above tests prove satisfactory and unit still fails to operate
properly, check for adequate compressor pumping as outlined in
the procedure on page 83.
Figure 4-11.
PSC compressor motor with external thermal protector and an example start assist kit.
Compressor - Unit
Ground
External Thermal Protector
Line 2
Start Capacitor
Identified Conductor
(115 Volt Only)
Bleeder Resistor
Run Capacitor
Ground
Line 1
Relay - Potential
Star
t
Winding
Main
Winding
4
6
5
2
C
S
1
Control
R
