Murphy L150 User Manual

Description

The L150 Series Level SWICHGAGE®is a combination liquid
level gauge and low limit switch; each unit includes (1) a chamber
with pivotal float, (2) an indicating dial with pointer, and (3) a low
level contact. When properly installed and maintained, the float
operates the pointer which, in turn, both indicates level during nor­mal operation, and closes a switching circuit if the level falls to the
low-limit set point.

Applications

The primary use of the L150/EL150K1 is for engine cooling sys­tems, surge or expansion tanks, condenser radiator or vapor
phase systems, pressurized or atmospheric systems. The Level
SWICHGAGE

®

can also be used to monitor lube oil, hydraulic
fluid or diesel fuel reservoirs and activates alarms and/or shut­down at a predetermined minimum level.
These instruments are built for low pressure systems with a
maximum of 25 psi (172 kPa) [1.72 bar].

Specifications

Level SWICHGAGE®Series
For Engine Liquids

L-6795B

Revised 10-99

Catalog Section 15

(00-02-0058)

L150/EL150K1 Series for Coolants,
Lube Oils, Fuel and Hydraulic Fluid

L150

Case: Die cast aluminum, poly-urethane coat-

ed; approximate dimensions; 4-1/2 x 4-3/4 x
2-3/4 in. (114 x 121 x 70 mm).

Mounting Holes: (2) 9/32 in. (7 mm) diameter
at 4-1/2 in. (114 mm) on center.

Float: Brass.
Lens: Polycarbonate.
O-rings: Saturated Nitrile, are suitable for

coolant or hydrocarbons. Maximum tempera­ture 250°F (121°C).

Gasket: Neo-cork.
Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper

cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting.

Contact Rating: 2 A @ 30 VAC/DC.
Wire: (1) 16 AWG x 26 in. (1.5 mm2x 660 mm)

with terminals.

Shipping Weight: 29 oz. (0.82 kg.).
Shipping Dimensions: 5-1/4 x 5-1/4 x

5-1/2 in. (133 x 133 x 140 mm).

EL150K1

Case: Die cast aluminum, poly-urethane coat-

ed; approximate dimensions; 5 x 4-3/4 x 2-3/4
in. (127 x 121 x 70 mm).

Mounting Holes: (2) 9/32 in. (7 mm) diameter
at 4-1/2 in. (114 mm) on center.

Float: Brass.
Lens: Polycarbonate.
O-rings: Saturated Nitrile, are suitable for

coolant or hydrocarbons. Maximum tempera­ture 250°F (121°C).

Gasket: Neo-cork.
Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper

cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting.
Snap-Switch: SPDT rated 10 A @ 125 VAC;

0.5 A @ 125 VDC; 10 A 30 VDC.

Wire: (3) 18 AWG x 14 in. (1.0 mm2x 356 mm).
Shipping Weight: 42 oz. (1.2 kg.).
Shipping Dimensions: 5-1/4 x 5-1/4 x

5-1/2 in. (133 x 133 x 140 mm).

EL150EX

Case: Sand cast aluminum, painted;

approximate dimensions; 6-1/2 x 5-3/4
x 5-1/4 in. (165 x 146 x 133 mm).

Mounting Holes: (2) 5/16 in. (8 mm)
diameter at 5-1/2 in. (140 mm) on center.

Float: 304 Stainless steel.
Lens: Tempered glass.
O-rings: Saturated Nitrile, are suitable for

coolant or hydrocarbons. Maximum tempera­ture 250°F (121°C).

Gasket: Neo-cork.
Vent Tube: 1/4 x 5 in. (6 x 127 mm) copper

cane with 1/4 NPT x 1/4 in. (6 mm) tube fitting
and 1/2 NPT to 1/4 NPT reducer fitting.

Snap-Switch: SPDT rated 10 A @ 125 VAC;

0.5 A @ 125 VDC; 10 A 30 VDC.

Wire: Wired to terminal block.
Shipping Weight: 5 lbs. (2.26 kg.).
Shipping Dimensions: 6-1/2 x 6-3/4x 6-3/8

in. (165 x 171 x 162 mm).

®

• Monitors level of

coolant, lube oil,
diesel fuel and
hydraulic fluid.

• Indicating Gauge

• Low Limit Switch

• Float Operated

• Explosion-proof

model is available.

SWICHGAGE

®

*Products covered by this bulletin comply with EMC Council directive 89/336/EEC regarding electromagnetic compatibility except as noted.

*

1/4 NPT

1/4 NPT

1/2 NPT
Conduit
Connection
(side of case)

1/2 NPT

Explosion­proof Case

1/2 NPT
(bottom of case)

CSA Listed for Hazardous Location:

Class I, Division 1, Group C & D

Adjustable
Limit Contact

1/2 NPT

Test
Knob

Test
Knob

Snap-Switch

1/2 NPT
Conduit

1/2 NPT

Radiator Fittings

Murphy PS, PS Barbed and PS-D fittings allow the installation of
the L150/EL150K1 to the radiator when a fitting is not available.

•

15-00-0107 (PS): thin wall, 1/4 in. (6 mm) tube fitting.

•

15-01-0167 (PS-Barbed): thin wall, 1/4 in. (6 mm) tubing or hose.

•

15-01-0202 (PS-D): for diesel or oil, thick wall (to 1/4 in. [6 mm]),

accepts 1/2 in. (13 mm) I.D. hose or 1/4 in. (6 mm) O.D. tubing.

15010235 FM3
15010236 FM4
15010237 FM5
15010238 FM12
15010349 CECO

Dimensions

Warranty

A two-year limited warranty on materials and workmanship is given
with this Murphy product. Details are available on request and
are packed with each unit.

Standard Electrical Diagrams

Fittings Kits Order Seperately

Full

Low

Full

Low

NC-Red

NO-Black

Common-

White

15-00-0107 (PS)

15-01-0167 (PS Barbed)

15-01-0202 (PS-D)

4-13/16 in.

(122 mm)

3-25/32 in.

(96 mm)

4-1/2 in.

(114 mm)

Mounting Holes

1/2-14 NPT

1/2 NPT

Back Connect

(optional)

1/4 NPT

2-3/4 in.
(70 mm)

9/32 in. (7 mm)
diameter holes

2 places

Mounting

Ears (2)

Test
Knob

4-13/16 in.

(122 mm)

4-15/16 in.

(125 mm)

4-1/2 in.

(114 mm)

Mounting Holes

1/2-14 NPT

1/2 NPT

Back Connect

(optional)

1/4 NPT

2-3/4 in.
(70 mm)

9/32 in. (7 mm)
diameter holes

2 places

11/16 in.
(17 mm)

Test

Knob

5-9/16 in.
(141 mm)

4-11/16 in.

(119 mm)

5-1/2 in.

(140 mm)

Mounting Holes

1/2-14 NPT

6 in.

(152 mm)

1/2 NPT

Connection

5/16 in. (8 mm)

diameter holes

2 places

L150

L150

EL150K1

EL150K1

EL150EX

EL150EX

Repair Kits

L150

15-00-0138 All parts except

case and body

15-00-0101 Case/body assembly

EL150K1

15-00-0139 All parts except

case and body
15-00-0101 Case/body assembly
15-00-0100 Lens/switch assembly

EL150EX

15-00-0110 Cover and float assembly
15-00-0108 Lid assembly
15-00-0109 Switch/terminal assembly

NC
NO

C

Low

Full

Accessories

Specify Description

15-00-0107 Radiator fitting (PS)
15-01-0202 Radiator fitting (PS-D)
15-01-0167 Radiator fitting (PS Barbed)

Printed in U.S.A. 015490

®

FRANK W.

MFR.

■ Frank W. Murphy Manufacturer

P.O. Box 470248; Tulsa, Oklahoma 74147; USA

tel. [phone] fax[phone]
e-mail [e-mail]

■ Frank W. Murphy Southern Division

P.O. Box 1819; Rosenberg, Texas 77471; USA

tel. [phone] fax [phone]
e-mail [e-mail]

Since 1939

■ Frank W. Murphy, Ltd.

Church Rd.; Laverstock, Salisbury SP1 1QZ; U.K.

tel. [phone] fax [phone] tlx 477088
e-mail [e-mail]

■ Frank W. Murphy Pte., Ltd.

No. 2 Tuas South Street 2, Sprintecs Bldg., #02-01/02
Singapore 638042

tel. [phone] fax[phone]
e-mail [e-mail]

■ Murphek Pty., Ltd.

1620 Hume Highway; Campbellfield, Vic 3061; Australia

tel. [phone] fax [phone]
e-mail [e-mail]

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 de México, S.A. de C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje
San Luis Potosí, S.L.P.; México 78384

tel. [phone] fax [phone]
e-mail [e-mail]

■ Murphy Switch of California

P.O. Box 900788; Palmdale, California 93590; USA

tel. [phone] fax [phone]
e-mail [e-mail]

■ Frank W. Murphy France

tel. [phone] fax [phone]