WS-93002N
Revised 2016-02-26
Section 30
(00-02-0191)
Murphy W-Series Engine Panels
General Installation Instructions
Read the following information before installing. These installation instructions are typical for a variety of W-Series engine panels and may
not reflect the exact configuration for your panel assembly. It is assumed that the installer is familiar with engine operations and has basic
mechanical and electrical skills. If additional assistance is needed, please call your Murphy dealer or contact one of our offices at the numbers
listed on this instruction sheet. A visual inspection for any damage which may have occurred during shipping is recommended.
GENERAL INFORMATION
WD300-LV
Description
Generally, pressure and temperature Swichgage* contacts are wired to a depending upon the operation to be performed, the type of electrical
central nerve center called a Magnetic Switch or Tattletale* annunciator. power available and the type of alarm or shutdown device used.
This nerve center is essentially a relay and, when signaled by a Typical wiring diagrams for the popular Tattletale annunciators and magnet­
Swichgage contact operation, it either makes or breaks a circuit to oper­ ic switches are included in this instructions. If a drawing of the specific
ate an alarm or engine shutdown device. Various nerve centers are used model number is enclosed, refer to that drawing for specific wiring.
A
U
CAUTION: Certain dangers to human safety and to equipment may occur if some equipment is stopped without pre-warning. It is recommended that
monitored functions be limited to alarm only or to alarm before shutdown.
INSTALLATION INFORMATION
Mounting the Panel
rA WARNING: Perform mounting operation with power source OFF.
UJ Disable the engine so it cannot start. Remove the battery ground cable.
I. Select a suitable mounting location on or near the engine. The location
should provide easy access to the panel and provide unobstructed
viewing of the Swichgage instruments.
2. The mounting location should avoid shock and vibration to the extent
possible. Generally, a location low on the engine is preferred. Avoid
mounting on top of the engine if possible. Shockmounts are
suggested where possible to dampen shock and vibration.
IMPORTANT: Use of improper shockmou11ts can accelerate the shock
a11d vibration effects. Consult the factory if you are in doubt.
NOTE: If shockmounts are used, it is suggested that a separate ground
wire be attached to the panel assembly and to the engine. This assures
electrical conrinuiry berween the Swichgage contacts a11d the battery
ground across the shockmoums (see mounting detail below).
DETAIL
shock mount
I
Connecting the Pressure Swichgage
I. Pressure tubing is generally not provided. Use of good quality flexi­
ble pressure tubing/hose and fittings is strongly suggested. Use at
least 3/16 in. (5 mm) I.D. tubing. I f using copper or rigid
tubing, install at least 12 in. (305 mm) flexible hose from the pres­
sure Swichgage instrument to the rigid tubing. This prevents damag­
ing vibration from reaching the Swichgage instrument.
2. Connect the pressure tubing to the 1/8-27 NPT pressure port of the
pressure Swichgage instrument. Use of a non-hardening thread seal­
ing compound is recommended although the thread is "dry seal". Be
sure that thread sealant does not foul the pressure orifice.
NOTE: The orifice can be removed for cleani11g.
3. Connect the pressure tubing to the pressure galley of the engine.
Generally this is at the oil filter housing. Use of non-hardening
thread sealant is recommended. Avoid droops or sink traps in
routing of the pressure line.
Installation Accessories
Tools and equipment needed:
• Thread sealant or Teflons tape.
•Straight edge screwdriver (medium).
• Wire stripping and terminal crimping tools.
• Electrical wire for use on power connections.
• Adjustable wrench or open end wrench set.
WS-93002N page I of 8
TROUBLESHOOTING TIPS
Make sure the voltage and current requirements are within the W-Series ratings. Determine the polarity for
the application. Use appropriate wire size for voltage and current.
These instructions will assi t in the correction of mo t problems which you may encounter with the panel. Before checking the list, first refer
to the wiring connections and operation procedures and make sure the panel is properly installed. If problems persist after making the
following check , consult any Enovation Controls facility.
-
SYMPTOM
Engine will not start.
Pointer burned in two.
WTCHGAGP contact closes
but doe not trip the magnetic
witch to top the engine.
Magnetic Switch trips but
engine does not stop.
I. Blown fuse at magnetic switch.
2. Accidental ground to (S) or (C) terminals.
3. Overload circuit due to accessories.
4. Open circuit in 518PH wiring.
I. Replace fuse.
2. Check for ground and correct.
3. Re-route acces ory circuits.
4. Repair circuit.
I. Wire from Swichgage instrument is
grounded or shorted to contact.
2. Closed Loop circuit has intermittent
open or shott.
3. Exces ive hock or vibration cau es
magnetic witch to trip.
4. Lack of coolant around temperatures n ing
bulb caus s "hot spot".
5. Temperature capillary routed too close to
exhaust manifold.
._
Engine doe. not top
immediately.
CORRECTIVE ACTLO
Overload of pointer contact due to exce
iv load or hort circuit.
False shmdown.
Lnaccurate reading .
PROBABLE CAUSE
[ncomplete circuit.
I. Pressure orifice plugged with thread sealant.
2. Temperature capillary rerouted too clo e to
exhaust manifold.
3. Broken or crushed temperature capillary.
Fuel hutoff valve u ed on diesel engine.
Feedback from alternator.
R move or reduce load; r move hort ircuit and replace
Swichgage in trument.
I. Remove ground or short.
2. Check all wiring and repair.
3. I elate panel from hock/vibration.
4. Check coolant level; loosen the union nut to allow trapped
air to e cape.
5. Reroute temperature capillary.
-Locate open circuit and repair; tum the contact adju tment
again t the pointer cau ing them to "wipe" again t each
other. Be ure magneto i. providing power to primary
te1minal po t. CD type magn tic witch u d with magneto.
I. Remove and clean pressure orifice.
2. Reroute capillary.
3. Replace wichgage instrument.
Be ure all fitting are air tight; use check valve in bypa.
line; use rack puller in place fuel valve.
.Install diode in excitation circuit.
Warranty
A limited warranty on materials and workmanship is given with thi Murphy prqd1,1ct.
A copy of the warranty may be viewed or printed by going to www fwmurphy com/warranty
WS-93002
page 8 of 8
">
