Thermal Relay Overload
Amp Adjustment Dial: Turn this dial to meet your motor manufacturer's thermal overload amp setting specification. Typically this setting is
Manual Contactor Override Lug: When pushed, the contactor is manually closed for troubleshooting purposes only. 
ON Button:
When pushed, power is sent to the magnetic field coil and the contactor closes and sends power to the motor.
Reset Button/OFF Button: Reset operation: If the thermal relay has tripped, push this button to reset the thermal relay.
OFF operation: If the motor is operating normally, this button will also cut the current going to the magnetic field coil, which opens the contactor and kills
Manual Trip Test Lever:
If the thermal relay function is 
in question, use a wooden stick
or dowel to slide the brown lever to the right. If the motor shuts off, the thermal relay has tripped and is functional. If the
motor keeps running, the thermal relay contacts are shorted closed and the relay must be replaced.
Parts Breakdown
power to the motor.
3 | 4 | |
| ||
|
|
10 
11 
5 | 8 | 7 |
|
1 |
| 6 |
|
|
|
| |
|
| 2 | |
|
|
|
REF | PART # | DESCRIPTION |
|
|
|
1 | PT20550001 | SWITCH BOX |
2 | PT20550002 | SWITCH BOX COVER ASSEMBLY |
DATA LABEL | ||
PLASTIC COVER SCREW | ||
3 | PT20551003 | CONTACTOR |
4 | PT20550004 | FIELD SWITCH |
REF | PART # | DESCRIPTION |
|
|
|
5 | PT20551005 | RELAY |
6 | PT20550006 | CONTACTOR RETAINER |
7 | PS38M | PHLP HD SCR |
8 | PHTEK18 | TAP SCREW #10 X 5/8 |
10 | P4571010 | |
11 | P4571011 | RUBBER SEAL |
COPYRIGHT © JANUARY, 2008 BY GRIZZLY INDUSTRIAL, INC. WARNING: NO PORTION OF THIS MANUAL MAY BE
REPRODUCED IN ANY SHAPE OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.
#CR10390 PRINTED IN TAIWAN