Murphy WD100 User Manual

Swichgage

®

Kits for Engines

Description

The WD100 Series Swichgage kits provide engine monitoring that
shuts down farm, construction, or other engine powered
equipment, when dangerous pressures or temperatures occur.
The control center for each of these kits is the compact and
adjustable, Universal Mounting Panel. This panel holds two
Swichgage(s) and a Tattletale

®

magnetic switch, and shut down

device where appropriate.

Specifications

• Murphy Swichgage products are two-instruments-in-one: (1) an
accurate indicating gauge with (2) a built-in, adjustable, limit switch.

• 518PH Tattletale magnetic switch is designed to shut down
engines; operates as a circuit breaker to interupt the ignition circuit
to a distibutor or to close a solenoid fuel valve on diesels.

• Temperature capillary tubes are 6 ft. (1.8 m) standard, but can
be ordered in any length.

• Standard Swichgage ranges*:
Pressure: 0-100 psi (0-689 kPa) [0-6.89 bar]
Temperature: 100-250°F (37-121°C)

*

Other ranges are available on request.

WD100 Series Kits

Depending upon the kit selected, the following components are
supplied:
A Universal Mounting Panel which consists of:

• 20P, oil pressure Swichgage instrument

• 20T, temperature Swichgage instrument with 6 ft. (1.8 m)
capillary, or 20TH, temperature Swichgage instrument for
WD175 kit.

• 518PH Tattletale magnetic switch

B Bracket mounting bolts, washers and nuts.
C CKV2336, fuel reverse flow/check valve.
D PRV50, fuel pressure relief valve
E SV-Series, fuel shut-off solenoid valve (1/4 NPT X 1/4 NPT)

Specify 12VDC or 24VDC.

Kit Combinations

These kits are available for virtually any engine application, any
engine type, or can be custom ordered to meet a specific use.

Kit WD100 includes: A, and B
Suitable for use on distributor ignition engines or on diesels
having a shutdown solenoid in the fuel pump.

Shipping Weight: 4.75 lbs (2.2 kg)
Shipping Dimensions: 9-

3

/4 in. x 9-1/4 in. x 5-3/4 in. (248 mm x 235 mm x 146 mm)

Kit WD150 includes: A, B, C, and E
Suitable for most liquid cooled diesel engines.

Shipping Weight: 6.15 lbs (2.8 kgs.)
Shipping Dimensions: 9-

3

/4 in. x 9-1/4 in. x 5-3/4 in. (248 mm x 235 mm x 146 mm)

Kit WD175 includes: A, B, C, and E
Suitable for air cooled diesel engines; 10 mm 1.5 adaptor and
special head temperature bulb. Includes SV-Series fuel valve.

Shipping Weight: 6.15 lbs (2.8 kgs.)
Shipping Dimensions: 9-

3

/4 in. x 9-1/4 in. x 5-3/4 in. (248 mm x 235 mm x 146 mm)

Kit WD185 includes: A, B, C, D, and E
Suitable for engines with gear driven transfer pump. (SV-Series is
not required on engines with built-in shutdown in the injector
pump.)

Shipping Weight: 6.20 lbs (2.8 kgs.)
Shipping Dimensions: 9-

3

/4 in. x 9-1/4 in. x 5-3/4 in. (248 mm x 235 mm x 146 mm)

A

E

B

D

C

—Especially designed for adaption to a wide variety of engines.

• Universal Mounting

Panel

• Guard against low oil

pressure or high
running temperature

• For farm or

construction
equipment

WD-8198B

Revised 03-06

Catalog Section 30

(00-02-0088)

WD100 Series

WD185

Engine Kit

WD-8198B page 1 of 2

WD-8198B page 2 of 2

How to Order

To determine the kit that wil suit your application, refer to the Kit
Combinations on the reverse side. When you have decided on a kit,

the model number and voltage must be specified when ordering.
Example: WD100, 12 Volt

Approximate Shipping Weights and Dimensions for each kit are
specified on the reverse side of this bulletin, under Kit Combinations.

Order oil line assembly separately.

Warranty

A limited warranty on materials and workmanship is given with this FW
Murphy product. A copy of the warranty may be viewed or printed by going to
www.fwmurphy.com/support/warranty.htm

Typical Wiring to Diesel Engine

Special Notes:

• Murphy Pressure Relief Valve; model PRV50 is factory set to start open­ing at 25 psi (172 kPa) [1.72 bar]. This is done to protect the fuel filter
canister from bursting due to high pressure.

• Install the Murphy Check Relief Valve, model CKV2336, as close as
possible to the injection pump. When the CKV2336 is installed

properly it should prevent the injection pump from siphoning fuel thus
not allowing continued operation after the SV valve closes.

• Install the SV-Series fuel valve as close as possible to the injection
pump inlet port.

• All fittings must be air tight.

On some fuel
systems it may
be necessary to
install check
valve here.

Rotating/Tilting Panel

It is the ability of this panel to mount in many
different positions (Swichgage instruments can be
rotated, the panel tilted) that allows for instrument
visibility without a difficult installation or interference
with other engine equipment.

Dimensions

CAUTION::Certain dangers

to human safety and to

equipment may occur if
some equipment is stopped without
pre-warning. In these cases, it is
recommended that monitored
functions be limited to alarm-only
or to alarm before shutdown.

In order to consistently bring you the highest quality, full featured products, we reserve the right to change our specifications and designs at any time.

Printed in U.S.A. 12 0 140

In order to consistently bring you the highest quality, full featured products, we reserve the right to change
our specifications and designs at any time. MURPHY, the Murphy logo, and Swichgage®are registered and/or
common law trademarks of Murphy Industries, Inc. This document, including textual matter and illustrations,
is copyright protected by Murphy Industries, Inc., with all rights reserved. (c) 2006 Murphy Industries, Inc.

www.fwmurphy.com

918.317.4100 Email: sales@fwmurphy .com

DIESEL ENGINE

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Filter

SV 

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PRV50

WD PANEL

Battery

Injector

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518PH

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Fuel Return Line

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214 mm)

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