Float Actuated Oil Level
Swichgage® instrument
L-5937B
Revised 06-06
Catalog Section 15
L100
For Small Engines and Pumps
■
See Oil Level and Condition
Without Shutting Down
Shutdown or Alarm on Low Lube Level
Adjustable Limit Switch for Alarm
■
■
and/or Shutdown
■
■
Save on Reduced Downtime
and Repair Costs
Simple Installation
L120
**
L127/L128
■
L127 and L128
Description
Specifications
®
Case: TROGAMID Nylon
Float: Brass
These float actuated Oil Level Swichgage instru-
ments are a combination oil level sight gage and
adjustable, low and/or high limit switch. The
limit switches are normally open during opera-
tion–yet close if the level drops or rises to where
the float contacts the limit screw. The contact
completes a circuit to ground a magneto or trip a
Murphy magnetic switch. The magnetic switch
can be used to activate alarms and/or shutdown.
Models are also available without limit switches.
■
Maximum Pressure Rating (all models):
30 psi (207 kPa) [2.07 bar]
Rating: 2 A @ 30 VAC/DC
2
■
L100 and L100W
Wire: 16 AWG x 48 in. (1.5 mm x 1.2 m)
Case: Die cast aluminum
Float: Brass
Mounting Bolts:
1
3
•
•
L127: /4-20 NC x 2 in. (4 required)
3
Rating: 2 A @ 30 VAC/DC
L128: /8-16 NC x /4 in. (2 required)
1
1
Vent Fitting: /4 in. (6 mm) tube x /8 NPT
1
Inlet Fitting: Hex Nipple /4 NPT
Warranty
Hardware (shipped loose)
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
L100:
1
•
Copper Tubing: /4 x 48 in. dia.
(6 mm x 1.2 m)
Application
1
1
•
•
•
•
Reducer Bushing: /2 NPT x /4 NPT
The level instruments described above can be
used on a variety of crankcases, pump gearcases,
or oil reservoirs–primarily on small engines and
pumps. The following list displays the model
and its typical application:
1
Close Nipple: /2 NPT
1
Tee: /2 NPT, black pipe
†
Models available with high and low options. See How to
2
Wire: 16 AWG x 24 in. (1.5 mm x 610
Order on reverse side.
mm)
L100W:
**Products covered by this bulletin comply with EMC
Council directive 89/336/EEC regarding electromagnetic
compatibility except as noted.
L100†: Small engines and pumps with
non-vented crankcase.
1
3
3
•
•
•
•
•
Vent Tube: /4 x 3- /8 in. (6 x 86 mm)
1
L100W†: Small engines and pumps with
vented crankcase.
Reducer Bushing: /4 NPT x /4 NPT
3
Close Nipple: /4 NPT
3
Tee: /4 NPT, black pipe
L120†: Machined surface on crankcase such as
Witte, National-Oilwell/Garland.
L127: Machined surface on crankcase, specifi-
cally, Fairbanks-Morse ZC Series and
Bell Engines.
2
Wire: 16 AWG x 24 in. (1.5 mm x 610
mm)
■
L120
Case: Cast Aluminum
Float: Brass
L128: Machined surface on crankcase, specifical-
Rating: 2 A @ 30 VAC/DC
ly, Arrow and Continental Emsco/Climax.
1
Mounting Bolts: /4-20 UNC–2A (4 req'd)
L-5937B page 1 of 2
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