Murphy Bilge Level Switch System BLSK1 Series Manuale utente

BLSK1 Series

■

Operates Bilge Pumps or Alarms

■

Uses Proven “Air Cell” Actuated System

■

Remote Switch and Moving Parts Kept

Unaffected by Corrosion

■

Aluminum Body and Cover

■

Includes 3 Assemblies:

(1)

BLS1 Bilge Level Switch

(2)

MACT1 Tube Kit (Sensor Line and Fittings)

(3)

MAC1 “Air Cell” (Volume Cell)

Description

The BLSK1 Bilge Level Switch System gives

you all items and fittings necessary to install in

your bilge. Or, you can have only the parts you

want and you provide brackets, tubing and mount-

ing hardware.

Using the proven “Air Cell” actuating system, all

moving parts and switching are remote from bilge

liquids and are thus not affected by corrosion,

rust, etc. All wetted parts are of non-corrosive

materials.

As bilge level rises a column of air is captured in

the MAC1 Air Volume Cell. The rising bilge

level compresses the column of air creating pres-

sure against the large diaphragm in the BLS1

Bilge Level Switch and the switch trips. Switch

set point is adjustable.

The switch resets as the bilge is pumped out. Air

cell recharges itself during normal operation.

The BLS1 is constructed of materials not affected

by marine atmospheres; Aluminum or Bronze

body and cover, Buna-N diaphragm.

Specifications

BLS1 Bilge Level Switch

Snap-Switch SPDT (standard)

• 5 A @ 125, 250, or 480 VAC

• 1/2 A @ 125 VDC, 1/4 A @ 250 VDC

NOTE: A pilot relay may be used for higher

contact ratings (see Typical Wiring Diagram).

Case/Lid: Aluminum (std).

Bottom Plate: Glass-filled Nylon.

Process Connection: 1/4 NPTF.

Max. Pressure: 25 psi (172 kPa) [1.72 bar].

Conduit Connection (electrical): 1/2 NPT.

BLS1 Weight: 3 lb. (1.4 kg).

BLS1 Dimensions: 6-1/4 x 6-1/4 x 6-1/4 in.

(159 x 159 x 159 mm).

15050737 Optional mounting bracket

16 ga., 304 stainless steel (see Dimensions).

MACT1 Tube Kit (fittings included)

4 ft. (1.21 m) flexible non-corrosive

tubing, 1/4 in. (6 mm) dia. (cut to fit).

MACT1 Weight: 0.5 lb. (0.23 kg).

MACT1 Dimensions: 6 x 6 x 6 in. (152 x 152

x 152 mm).

MAC1 Air Cell (Volume Cell)

• Made of non-corrosive materials

• (2) 1/4-20 stainless steel hex bolts and nuts.

MAC1 Weight: 2 lb. (1 kg).

MAC1 Dimensions: 6 x 6 x 6 in. (152 x 152

x 152 mm).

Dimensions

(1)

(2)

(3)

MACT1 Tube Kit

(Sensor Line)

BLS1

(Bilge

Level

Switch)

MAC1

(Volume Cell)

Optional Mounting Bracket (15050737)

1/2 NPT for electrical

connections

6-5/32 in.

(156 mm)

5-1/2 in.

(140 mm)

4 feet long

(1.21 m) std.

1/4-20 hex bolt

(2-places) and nuts

9/32 in. (7 mm) dia.

4-places

3-1/4 in.

(83 mm)

5-3/16 in.

(132 mm)

2-3/8 in.

(60 mm)

1-1/2 in.

(38 mm)

BLSK-95107B

Revised 10-03

Catalog Section 15

(00-02-0052)

Bilge Level Switch System

Installation Instructions

1. Select a mounting location in lower part of the bilge

for the MAC1 air cell, but do not mount cell at this

time. MAC1 must be placed so that no debris will

become trapped inside it. Position the air cell

approximately 1-1/2 to 2 in. (38 to 51 mm) below

desired operation point and note location for attach-

ing the cell to a stringer or bulkhead, etc. Vertical

adjustment may be necessary for final calibration

(see step 6).

2. Mount the BLS1 switch via optional mounting

bracket 15050737 or one of your supply. Keep the

BLS1 switch within 4 ft. (1.21 m) off the MAC1 air

cell. Tubing must NOT have a loop or flat area for

moisture to collect. Always maintain a downward

slope.

3. Attach the MACT1 tubing kit to the air cell and to

the BLS1 switch. Any tubing can be used as long as

it does not corrode and it provides air tight connec-

tions.

4. Wire the SPDT snap-switch according to instruc-

tions and your requirements. See typical wiring dia-

grams, below.

5. The BLS1 trip point is preset to operate when bilge

level rises approximately 1-1/2 in. (38 mm) above the

bottom of the air cell. It will reset when level falls

approximately 3/4 in. (19 mm).

6. Raise or lower the air cell so that the distance from

the hull to the trip point level on the side of the air

cell is equal to desired level of bilge. Secure the air

cell via the 2 hex bolts.

If necessary, adjustment can be made prior to

installation by placing the air cell in a bucket of

water and adjusting the white knurled knob inside

the BLS1 until the snap-switch actuates at the

desired level. Or, build a coffer dam around the air

cell in the bilge, add the desired amount of bilge

water, and adjust the switch trip knob as explained

above. BE SURE to remove coffer dam prior to

placing the BLS1 into service.

7. Verify proper operation at desired levels prior to

launch.

NOTE: The air cell will automatically recharge itself

anytime the bilge level falls below the air cell.

CAUTION:

Air cell tubing and connections must

remain air tight. Seal any holes placed in the air cell.

WARNING

Before beginning installation of this Murphy product:

✔Disconnect ALL electrical power to the machine.

✔Makesure the machine CANNOT operate during

installation.

✔Follow all safety warnings of the machine manufacturer.

✔Read and follow all installation instructions.

AIR

Sensor Line

(MACT1 Tube Kit)

BLS1 Bilge

Level Switch BLS1 Switch

BLS1 Switch

Customer

Supplied

Bracket

ST Series Alarm

Volume Cell

(MAC1)

Bulkhead

Optional

Mounting

Bracket

(15050737)

8–30 VAC

CNC

8–40 VDC

Power Supply

+ve –ve

Alarm #5

Alarm #1

Alarm #2

Alarm #3

Alarm #4

–

CNC

K-1

See Note

NOTE: Contact rating should be

appropriate for horse power of the pump.

Operating

Bilge Pump

Base Model

BLS1 = Bilge level switch

BLSK1 = Bilge level switch kit:

BLS1 (Bilge Level Switch)

MACT1 (Tubing kit)

MAC1 (Air cell)

Body (Lid and Case)

Blank = Aluminum

Switch

Blank = SPDT, 5A

Accessories and Replacement Parts (order separately)

15050737: BLS1 mounting bracket.

15010205: 5 A snap-switch and movement assembly.

15000123: Diaphragm assembly.

15050823: Piston.

15050824: Knob for limit adjustment.

How to Order the BLSK1

To order use the model number designation diagram below.

Typical Installation and Wiring

BLSK1

BLSK-95107B page 2 of 2

CONTROL SYSTEMS & SERVICES DIVISION

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

+1 281 633 4500 fax +1 281 633 4588

e-mail [email protected]

MURPHY DE MEXICO, S.A. DE C.V.

Blvd. Antonio Rocha Cordero 300, Fracción del Aguaje

San Luis Potosí, S.L.P.; México 78384

+52 444 8206264 fax +52 444 8206336

Villahermosa Office +52 993 3162117

e-mail [email protected]

www.murphymex.com.mx

FRANK W. MURPHY, LTD.

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

+44 1722 410055 fax +44 1722 410088

e-mail [email protected]

www.fwmurphy.co.uk

MURPHY SWITCH OF CALIFORNIA

41343 12th Street West

Palmdale, California 93551-1442; USA

+1 661 272 4700 fax +1 661 947 7570

e-mail [email protected]

www.murphyswitch.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.

MACQUARRIE CORPORATION

1620 Hume Highway

Campbellfield, Vic 3061; Australia

+61 3 9358 5555 fax +61 3 9358 5558

e-mail [email protected]

FW Murphy

P.O. Box 470248

Tulsa, Oklahoma 74147 USA

+1 918 317 4100

fax +1 918 317 4266

e-mail [email protected]

www.fwmurphy.com

USA–ISO 9001:2000 FM 28221

UK–ISO 9001:2000 FM 29422

Printed in U.S.A.

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

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