Thermal Relay Overload Amp

Manual Contactor Override

ON Button:

When

pushed,

Adjustment Dial: Turn this dial

Lug: When pushed, the contactor

power is sent to the magnetic

to the amperage setting speci-

is manually closed for trouble-

field coil, closing the contactor

fied by the motor manufacturer.

shooting purposes only.

and sending power to the motor.

Typically, this setting is 100–

 

 

 

 

 

 

110% of the amperage load listed

 

 

 

 

 

 

on the motor data plate. Please

 

 

 

Manual/Auto Reset Lever: In

note that turning this dial has

 

 

 

the up position, the thermal relay

no effect on increasing motor

 

 

 

is in manual reset mode. This

horsepower. If turned too high,

 

 

 

means you must re-install the

the motor can overheat and be

 

 

 

outside cover and push the red

damaged before the relay trips.

 

 

 

OFF button, then push the green

 

 

 

 

ON button to reset the thermal

Trip Indicator: If this window

 

 

 

relay. In the down position, the

 

 

 

thermal relay

will automatically

turns yellow, the thermal relay

 

 

 

reset when it has cooled.

has tripped.

 

 

 

 

 

 

Manual Trip Test Lever: If the

 

 

 

Reset Button: When

pushed,

thermal relay function is in ques-

 

 

 

the thermal relay is reset, clear-

tion, run the motor and use a

 

 

 

ing the yellow trip indicator win-

wooden toothpick to slide the

 

 

 

dow.

 

 

yellow test lever to the left. If the

 

 

 

 

 

 

motor shuts off, the thermal relay

 

 

 

 

 

 

has tripped and is functional.

OFF Button: When pushed, the current going to the magnetic field

 

coil is cut, which opens the contactor and cuts power to the motor.

Parts Breakdown

10

11

1

9

3V2

4

8

6 7

5

2

2-1V2

 

REF

PART #

DESCRIPTION

 

 

 

1

P4571001

SWITCH BOX

2

P4571002

SWITCH BOX COVER ASSEMBLY

2-1V2

P8291002-1V2

DATA LABEL HUFB-16KK V2.10.07

3V2

P8290003V2

CONTACTOR TECO CU-16 110V V2.10.07

4

P4571004

FIELD SWITCH TECO CNA-1

5

P8291005

OL RELAY TECO RHN-10K 22-30A

REF

PART #

DESCRIPTION

 

 

 

6

P4571006

CONTACTOR RETAINER

7

PS55M

PHLP HD SCR M3-.5 X 10

8

P4571008

CAPTURED GROUND SCR M4-.7 X 10

9

PS10

PHLP HD SCR 10-24 X 1-1/2

10

P4571010

LT STRAIN RELIEF PG-16

11

P4571011

RUBBER SEAL

Copyright © JANUARY, 2008 By Grizzly Industrial, Inc., REVISED JUNE, 2010 (TS)

Warning: No portion of this manual may be reproduced in any shape

Or form without the written approval of Grizzly Industrial, inc.

#TS10362 printed in TAIWAN

-2-

G8291 Magnetic Switch

Page 2
Image 2
Grizzly G8291 manual Adjustment Dial Turn this dial, Manual/Auto Reset Lever, Trip Indicator If this window