Murphy Switch WAI Series User Manual

Swichgage® Shutdown Panels for  
Mobile Equipment of All Kinds  
WAI-94032B  
Revised 05-06  
Catalog Section 30  
WAI Series  
Get the Same Original Equipment  
Specified by Major OEM’s  
SwichgageInstruments Include  
Built-in Light Pipe Illumination  
WAI-271  
Prewired and Ready to Install  
Alarm Only Model Saves Money on  
Applications Not Requiring Shutdown  
Available for 12 or 24 Volts  
WAI-8  
Description  
Models Available  
Application  
WAI Series Murphy panels offer engine pro-  
tection for on and off road mobile equipment.  
WAI-2: Completelly enclosed and with con- Trucks, buses, fork lifts, loaders, earth-  
venient under-dash mounting provides  
Swichgage instruments for low oil pressure  
and high coolant temperature; visual and  
audible alarms before automatic shutdown.  
Includes a 270°pivoting, mounting bracket.  
movers–any engine powered mobile unit,  
such as delivery vans, farm and construction  
equipment, street sweepers.  
You get accurate engine readings and time-  
delayed automatic shutdowns. Flashing light  
and mini-siren signal a warning before the  
shutdown. Alarm-only panels (without shut-  
down capabilities) are also available.  
Warranty  
WAI-3: Same as WAI-2 panel with a 3rd  
Swichgage instrument for block coolant  
pressure (0-15 psi).  
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  
WAI panels are easy to install and function  
test without the need for expensive auxiliary  
equipment. Each is a cost competitive and  
effective system for engine protection.  
WAI-4: Same as WAI-2 panel with a 3rd  
Swichgage instrument for transmission tem-  
perature (140-300°F).  
WAI-7: Open style panel same as WAI-2.  
The WAI Series Panels are complete diagnos-  
tic, engine-protection systems. Any vehicle or  
engine can be monitored and in case of poten-  
tially damaging conditions an alarm will oper-  
ate before the engine is shut down. WAI Panels  
feature direct-reading, mechanical Swichgage  
instruments (gauge and limit switch in one)  
and Selectronic relays and alarms. Swichgage  
instruments are internally lighted for night illu-  
mination.  
WAI-8: Open style panel provides  
Swichgage instruments for low oil pressure,  
coolant pressure and high coolant tempera-  
ture; visual and audible alarms before auto-  
matic shutdown.  
WAI-9: Open style panel same as WAI-8  
with transmission temperature Swichgage  
instrument instead of coolant pressure.  
WAI-271: Open style panel similar to WAI-7  
but for alarm-only.  
WAI-94032B page 1 of 4  
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WAI-271  
Alarm-Only, Open Style Panel  
• Oil Pressure Swichgage instrument  
• Coolant Temperature* Swichgage instrument  
• Mini-siren  
• TL7, Flasher Alarm Light  
• Available for 12 VDC or 24 VDC  
*Temperature capillary length is standard 6 ft. (1.8 m). Specify longer lengths.  
How to Order  
Order by using the model number  
(also see the quick reference guide below):  
WAI-2  
WAI-3  
WAI-4  
WAI-7  
WAI-8  
WAI-9  
WAI-271  
STANDARD PANEL ASSEMBLIES AND KITS ~ QUICK REFERENCE GUIDE  
Options like 24 VDC, special capillary length,  
delay time, etc, can be specified.  
WAI2 WAI3 WAI4 WAI7 WAI8 WAI9  
Enclosed, easy-mount panel  
Open, easy-mount panel  
®
201P-1-75 Engine oil pressure SWICHGAGE  
®
202T-1-220 Engine coolant temperature SWICHGAGE (6 ft. [1.83 m] capillary)  
®
202P-1-15 Engine coolant pressure SWICHGAGE  
®
203T-1-300 Transmission temperature SWICHGAGE (6 ft. [1.83 m]) warning-only  
®
760AF SELECTRONIC relay (30 second time delay, 12V)  
®
TL7 SELECTRONIC flashing alarm (12V, negative ground)  
TL2 and FL3 alarm light  
SAH MINI-SIREN®  
Diode 65010098, isolates transmission temperature for warning-only  
WAI-94032B page 3 of 4  
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Typical Dimensions  
7-3/8 in.  
(187 mm)  
WAI-7  
WAI-2  
6-7/32 in.  
(158 mm)  
8-31/64 in.  
(216 mm)  
8-1/64 in.  
(203 mm)  
4-9/16 in.  
(116 mm)  
5-57/64 in.  
(149 mm)  
1-1/16 in.  
(27 mm)  
213/16 in.  
(71 mm)  
9/16 in.  
(14 mm)  
2x 9/32 in. (7 mm) dia.  
2x 5/16 in. (8 mm) slot  
15/32 in.  
(12 mm)  
3-43/64 in.  
(93 mm)  
3-29/64 in.  
(88 mm)  
3-3/16 in.  
(81 mm)  
F
P.S.I.  
F
P.S.I.  
1-21/32 in.  
(42 mm)  
26 in. long  
(660 mm)  
NOTE: Process Connection on pressure  
SWICHGAGE® is 1/8-27 NPT  
5/8-18 UNF  
WAI-8 / WAI-9  
9-7/8 in.  
(251 mm)  
1-1/2 in.  
(38 mm)  
11/32 in.  
(9 mm) Diameter  
8-23/64 in.  
(221 mm)  
1/2-14 NPT  
4-9/16 in.  
(116 mm)  
WAI-3 / WAI-4  
1-1/16 in.  
(27 mm)  
10-63/64 in.  
(279 mm)  
9/16 in.  
(14 mm)  
10-33/64 in.  
(267 mm)  
2x 5/16 in. (8 mm) slot  
8-25/64 in. (213 mm)  
15/32 in.  
(12 mm)  
2x 9/32 in. (7 mm) dia.  
3-43/64 in.  
(93 mm)  
3-3/16 in.  
(81 mm)  
F
P.S.I.  
F
P.S.I.  
WAI-271  
8-7/16 in.  
(214 mm)  
1-1/16 in.  
(27 mm)  
7-3/8 in.  
(187 mm)  
9/16 in.  
(14 mm)  
1-21/32 in.  
(42 mm)  
26 in. long  
(660 mm)  
NOTE: Process Connection on pressure  
SWICHGAGE® is 1/8-27 NPT  
2x 5/16 in. (8 mm) slot  
5/8-18 UNF  
15/32 in.  
(12 mm)  
1-1/2 in.  
(38 mm)  
11/32 in.  
(9 mm) Diameter  
1/2-14 NPT  
3-3/4 in.  
(95 mm)  
F
P.S.I.  
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 com-  
mon law trademarks of Murphy Industries, Inc. This document, including textual matter and illustrations, is copy-  
right protected by Murphy Industries, Inc., with all rights reserved. (c) 2006 Murphy Industries, Inc.  
www.fwmurphy.com  
9 1 8 .3 1 7 .4 1 0 0 Email: sales@fwmurphy.com  
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.  
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