Reliable Model c Owner's manual

Bulletin 613G

Listed by Underwriters Laboratories, Inc.

Approved by Factory Mutual Research

Corporation, and other fire insurance and

governmental agencies in the United

States and foreign countries.

Model C

Mechanical

Sprinkler Alarm

Instructions for

Installation, Operation, Care

and Maintenance

The Reliable Automatic Sprinkler Co., Inc., 525 North MacQuesten Parkway, Mount Vernon, New York 10552

valve, the strainer shall be located at the outlet of the

retarding chamber unless the retarding chamber is

provided with an approved integral strainer in its outlet.

The piping to the mechanical alarm should be pitched

to allow proper drainage back through the strainer.

Alarm, dry pipe and deluge valve trimmings provide

the proper drain outlet. Refer to respective valve

bulletins for installation of trimmings.

The 1″(25mm) drain outlet should discharge into an

open drain.

No single mechanical alarm should be connected to

more than three sprinkler systems and they should be

located in the same fire area. A ¾ ″NPT (R¾) swing

check valve must be located in each alarm line near the

junction(s) going to the Mechanical Alarm. This will

assure that water flowing from the alarm port of the

opened Valve will go directly to the water motor. A hole

approximately 18″(3.2mm) diameter should be drilled

through the clapper of each check valve near the center.

Operation

When an alarm (wet), dry pipe or deluge valve is

operated due to fire, water flows through the ¾ ″(20mm)

strainer, and ¾ ″(20mm) piping that connects the

mechanical sprinkler alarm to the valve. On entering the

mechanical sprinkler alarm inlet, the water passes

through the nozzle and impinges against the gong

producing a continuous piercing alarm. The water, after

impinging against the pelton wheel, drains through the 1″

(25mm) drain outlet in the body housing.

The alarm continues to sound as long as water is

flowing through the sprinkler system. It may be shut off

by closing the alarm control valve located in the alarm line

connecting the mechanical sprinkler alarm with the alarm

(wet), dry pipe or deluge valve. Normally, the alarm

control valve must be sealed in the open position.

The Model C Mechanical Sprinkler Alarm is self setting

after each operation, eliminating the need of removing

cover plates, etc. to reset internal mechanisms.

Installation Instructions

The Model C Mechanical Sprinkler Alarm shall be

located as near the alarm (wet), dry or deluge valve as

practicable in order to avoid long runs or many fittings in

the piping. The total length of the pipe should not exceed

75 feet ( 22.9m ) nor shall the mechanical sprinkler alarm

be located over 20 feet (6.1m) above the valve. If

absolutely necessary to exceed 75 feet (22.9 m), the pipe

line to the mechanical sprinkler alarm shall be increased

one or more sizes to compensate for loss of pressure due

to hydraulic friction.

1. Locate and cut hole in building wall for connecting ¾″

(20mm) support pipe of appropriate length wall

thickness plus 1″(25mm).

2. Assemble the support pipe to the Wall Plate

(95106603) without removing the Gong (93806612)

and position this assembly on the outside wall with the

support pipe through the wall.

3. Remove the Body Cover (92106603), Cover Gasket

(93706602), and Pelton Wheel (97006603) from the

Body (91006603).

4. Place the Wall Support Washer (96906603) over the

support pipe as shown in the assembly drawing and

screw the Body onto the support pipe until the entire

assembly is aligned and secure to the wall.

5. Slip the Drive Shaft (96206603) thru the support pipe

and into the Drive Shaft Adapter (90086601). Rotate

the drive shaft to make sure it’s properly inserted (the

gong will alarm). Mark and cut the drive shaft where it

projects from the hub in the body.

6. With the drive shaft in place, make sure the Nylon

Bearing (90506603) is in the hub and insert the Pelton

Wheel through this onto the drive shaft. Spin the

Pelton Wheel to ensure that the assembly is free and

that the gong alarms.

7. Replace the Body Cover and Cover Gasket.

8. Connect alarm inlet to the alarm (wet), dry pipe or

deluge valve using galvanized or brass pipe of size

not less than ¾ ″ (20mm). An approved ¾ ″(20mm)

strainer is included for installation near the alarm outlet

of the alarm (wet), dry pipe or deluge valve. When a

retarding chamber is used in connection with an alarm

Model C Mechanical Sprinkler Alarm

Item Part Number Description Qty.

Req’d

191006603Body1

292106603Body Cover 1

393706602Cover Gasket 1

495606604Body Cover & Adapter Screw6

596906603Wall Support washer 1

698604402Clean-out Plug1

797006603Pelton Wheel 1

890506603Bearing2

996206603Drive Shaft, 18 ″1

1093806612Gong1

1191106601Gong Bolt 1

1295106603Wall Plate1

1390086601Driver Shaft Adapter 1

1473020063Striker Assembly1

1578650200Strainer, ¾″24 Mesh (not shown) 1

List of Model C Mechanical Sprinkler Alarm Parts

Should replacement parts be needed, use only genuine Reliable made parts.

When ordering, specify part number, name, model and serial number of the

unit.

Maintenance

1. Sprinkler System – See NFPA 25 pamphlet –

Inspection Testing and Maintenance of Sprinkler

Systems.

2. Strainer – Refer to respective alarm, dry pipe or

deluge valve bulletins.

A ¾″(20mm) strainer is located in the alarm line.

Periodic removal and cleaning of the strainer will

eliminate accumulation of trash and scale which

can impair the flow of water, thereby preventing

proper operation of the sprinkler alarm.

3. Clean-out – The Clean-out Plug (98604402) in the

water motor should be removed periodically to

remove any accumulation of trash and scale that may

have passed through the strainer.

4. Bearings – These are nylon and do not require

lubrication.

Inspection

1. Check inside of gong for accumulation of trash,

nests, etc.

2. Be sure the gong bolt (91106601) is secure.

3. Be sure that the ¾″(20mm) strainer is clean.

Note: See “Maintenance.”

4. False alarms – Refer to Alarm Valve Bulletins 407

or 408.

Testing

1. Alarm Valve Installations

Refer to Alarm Valve Bulletins 407, 408 or 409.

The mechanical sprinkler alarm may be tested without

disturbing the alarm valve by opening the alarm test valve

located in the piping line connecting it to the alarm valve

inlet side.

To test the mechanical sprinkler alarm and the alarm

valve, open the 1 ″(25mm) inspector’s test connection.

This connection is usually located at the end or top line of

the system and its opening is equivalent to the fusing of

one automatic sprinkler.

2. Dry Pipe Valve Installations

Refer to Dry Pipe Valve Bulletins 350, 353 or 354.

To test the mechanical sprinkler alarm, open the alarm

test valve located in the piping connecting the sprinkler

alarm to the dry pipe valve inlet side.

Note: After testing, it is necessary to drain the water

from the alarm line – refer to the dry pipe valve inspection

and testing procedure.

3. Deluge valve installations

Refer to Deluge Valve Bulletins 501 or 503.

Test the mechanical sprinkler alarm by opening the

alarm test valve located in the piping line connecting the

sprinkler alarm to the deluge valve inlet side. After the

test is completed, push in on the plunger of the

mechanical ball drip valve until all water has drained from

the alarm line.

The equipment presented in this bulletin in accordance with the latest pertinent Standard of the National Fire Protection Association, Factory Mutual Research

Corporation, or other similar organizations and also with the provisions of governmental codes or o rdinaire whenever applicable.

Products manufactured and distributed by Reliable have been protecting life and property for over 8 0 years, and are installed and serviced by the most highly