Shop fox D4118 User Manual

Model D4118

BLACK

GREEN

RED

COLOR KEY

Bk

Gn

Rd

YELLOW

3L2 5L3

13

NO

2T1

4T2

6T3

14

NO

TEST

TRIP IND.

97 NO

98 NO

95 NC

96 NC

2T1

4T2

6T3

O

R

54
NO

NO
53

ON

OFF

RESET

1 HP 220V Motor

220 Volt

Single-Phase

Power Source

M

A

1L1

TECO

CU­16

Ground

1 HP 220V Magnetic Switch

Instruction Sheet

Phone #: [phone] • Online Tech Support: [e-mail] • Web: www.shopfox.biz

Electrocution or
fire could occur if
this switch is not
installed or adjust­ed by a qualified
electrician!

Contactor TECO CU-16

(220V Coil)

Figure 1. Model D4118 magnetic

IM P O RTANT: This magnetic switch toggles a motor ON and OFF, and helps provide thermal overload

protection for the motor if the operating temperature gradually increases due to heavy work loads. The
thermal overload relay inside is not designed to cut power in the event of a sudden motor overload or
stall. To help protect a motor from this type of overload, the power supply circuit must be properly
sized for the full-load current rating of the motor.

OPERATION: When pushed, the green ON button on the outside cover of the magnetic switch allows
current to flow to the magnetic coil, which pulls the contactor closed. The main current then passes
through the thermal overload relay to the motor. If the motor begins to overheat, the relay breaks the
magnetic field, which opens the contactor and cuts current to the motor. The red OFF button manually
breaks the magnetic field, which opens the contactor and disconnects the current to the motor.

Thermal Overload

Relay TECO RHN-10K

switch.

(5.5–8.5A)

D4118 Magnetic Switch Instructions

REF PART # DESCRIPTION REF PART # DESCRIPTION

101 XD4115101 SWITCH BOX 107 XD4115107 CONTACTOR RETAINER
102 XD4115102 SWITCH BOX COVER ASSEMBLY 108 XPS106M PHLP HD SCR M3-.5 X 10
103 XD4118103 DATA LABEL HUFB-16KK 109 XD4115109 CAPTURED GROUND SCR M4-.7 X 10
104 XD4118104 CONTACTOR TECO CU-16 220V 110 XPS10 PHLP HD SCR 10-24 X 1-1/2
105 XD4115105 FIELD SWITCH TECO CNA-1 111 XD4115111 LIQUID-TIGHT STRAIN RELIEF PG-16
106 XD4118106 OL RELAY TECO RHN-10K 5.5-8.5A 112 XD4115112 RUBBER SEAL

101

102

103

104

105

106

107

108

109

110

111

112

Thermal Relay Overload Amp
Adjustment Dial: Turn this dial

to the amperage setting speci­fied by the motor manufac­turer. Typically, this setting is
100–110% of the amperage load
listed on the motor data plate.
Please note that turning this
dial has no effect on increasing
motor horsepower. If turned too
high, the motor can overheat
and be damaged before the
relay trips.

Trip Indicator: If this window
turns yellow, the thermal relay
has tripped.

Manual Trip Test Lever: If the
thermal relay function is in
question, run the motor and
use a wooden toothpick to slide
the yellow test lever to the
left. If the motor shuts off, the
thermal relay has tripped and is
functional.

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, closing the contactor
and sending power to the
moto r.

Manual/Auto Reset Lever: In
the up position, the thermal
relay is in manual reset mode.
This means you must re-install
the outside cover and push
the red OFF button, then push
the green ON button to reset
the thermal relay. In the down
position, the thermal relay will
automatically reset when it has
cooled.

Reset Button: When pushed,
the thermal relay is reset,
clearing the yellow trip indica­tor window.

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

WARNING: NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE OR FORM WITHOUT

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THE WRITTEN APPROVAL OF WOODSTOCK INTERNATIONAL, INC.

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