INFLUX MEASUREMENTS FIRESURE FIREGROOVE, FIRESURE FIREFLANGE Manual To The Installation, Operation And Maintenance

Cert No.

464a/01

-10

M e a s u r e m e n t s L t d

T

YPE

- F

IREFLANGE

MANAGEMENT

SYSTEMS

Tel: [phone] Fax: [phone] Email: [e-mail]

1a Bennett House, The Dean, Alresford, Hampshire, UK. SO24 9BQ.

Quality Systems Certificate No. 464

A GUIDE TO THE INSTALLATION, OPERATION AND MAINTENANCE OF

FIRESURE

FLOWMETERS IN AUTOMATIC SPRINKLER INSTALLATIONS

Assessed to ISO 9001:2008

T

T

YPE - FIREGROOVE

F

IRESURE FLOWMETER TYPES – APPROVED BY

YPE - FIREFLANGE

LPCB

Contents: Page

1 Specification and Principle of Operation

1.1 I

1.2 C

1.3 P

2 Installation

2.1 P

2.2 M

2.3 C

2.4 I

3 Operation

3.1 F

3.2 F

3.3 F

4 Maintenance

4.1 C

4.2 R

NTRODUCTION

ONSTRUCTION AND SPECIFICATION

RINCIPLE OF OPERATION

IPE LINE CONFIGURATION

AIN ORIFICE CARRIER PREPARATION

ONNECTING THE BYPASS INDICATOR

NSTALLATION IN-LINE

LOW TEST RANGES

LOW TESTING AND READING

AULT CHECKING

HANGING GLASS INDICATOR

ECOMMENDED SPARES

....................................................................................................................................... 2

....................................................................................................................... 2

..................................................................................................................... 3

........................................................................................................................... 6

............................................................................................................................... 7

................................................................................................................ 7

................................................................................................................................... 7

................................................................................................................ 8

........................................................................................................................ 8

...................................................................................................... 2

................................................................................................... 4

................................................................................................... 5

LPS 1045.1

IOM FS Iss 9; April 2012; ECR1269 Page 1 of 8

1 Specification and Principle of Operation

Carrier

Indicator

Firegroove and Fireflange Type

1.1 Introduction

The Firesure flowmeter is a direct reading flowmeter, approved for use under the LPCB rules for automatic
sprinkler installations.

These meters have been approved for installation with gauge glass in the vertical position. There must be at least
five diameters of straight pipe upstream and downstream of the orifice plate. The isolating valve on the pressure
tappings must be kept closed when the meter is not being used. A spare gauge glass must be provided and
located in the cabinet containing the stock of replacement sprinklers.

1.2 Construction and Specification

Main Orifice Carrier - 316 stainless steel flow orifice mounted in a polyester coated mild steel carrier

Bypass Flow Indicator - Nickel-plated copper tubing and brass connections
Stainless steel filter element, restrictor rodding and float indicator
Boroscilicate glass indicator tube
Viton and polyurethane seals

Max Operating Pressure - 16 bar

Max Operating Temperature - 90°C maximum

Connection - Fireflange - Wafer style bolted between flanges
Firegroove – Cut groove pipe ends using approved pipe couplings

1.3 Principle of Operation

Water flow through the main orifice, creates a pressure difference between the two pressure tapping ports. These
pressure ports are connected across the bypass flow indicator, causing a small bypass flow through the indicator,
directly related to the flow through the main orifice. An indicating float positioned within the glass tube can be
read against scale markings, which show the flow rate delivery of the installation.

Main Orifice

Bypass Flow

Pressure
Tapping Ports

IOM FS Iss 9; April 2012; ECR1269 Page 2 of 8

2 Installation

A A

2.1 Pipe Line Configuration

Optional Full Bore
Isolation Valve

From Pump

464a/01, 464a/06 F3/1, F3/6 50 250 BS1387
464a/02, 464a/07 F3/2, F3/7 80 400 BS1387
464a/03, 464a/08 F3/3, F38 100 500 BS1387
464a/04, 464a/09 F3/4, F3/9 150 750 BS1387
464a/05, 464a/10 F3/5, F3/10 200 1000 BS3600

LPCB Ref. No. Type Nom. Size mm A mm Pipe Spec.

Recommended pipeline configuration for automatic sprinkler installation of Firesure Flowmeter.

Firegroove

90mm

Sizes 50-150

40mm

Fireflange

Firegroove

100mm

Size 200

Control
Valve

Return

IOM FS Iss 9; April 2012; ECR1269 Page 3 of 8

2.2 Main Orifice Carrier Preparation

a) For Horizontal Pipe Work Mounting – Connect joggled connection pipes as shown

Red

White

or

Flow
Direction
Left to
Right

White

Red

b) For Vertical Pipe Work Mounting – Connect joggled connection pipes as shown

Red

Red

Flow Direction

Up

White

Flow Direction

Down

c) Rotate Pipes to Position Shown in a) or b)
Check pipes for horizontal alignment.

Ensure that the pipes spacing matches the rear bypass indicator connections.
Tighten pressure tapping nuts.

Tighten

Flow
Direction
Right to Left

White

IOM FS Iss 9; April 2012; ECR1269 Page 4 of 8

2.3 Connecting the Bypass Indicator

indicator vertical.

Red

White

Rear view of indicator piping as
supplied suitable for connection to

main orifice carrier for horizontal
flow right to left or vertical flow
upward.

Remove red plastic stop and
retaining rod from top block.
Remove retaining screw and
assemble restrictor and bleed
assembly to indicator top block
with retaining screw in place.

Rear view of indicator adjusted and
suitable for connection to main
orifice carrier for horizontal flow left
to right or vertical flow downwards.
To adjust loosen nuts, rotate arms to
position shown and retighten nuts.

nut

Connect Bypass unit to main orifice
carrier ensuring that ‘white’ marked
pressure point connects with ‘white’
handled tap and ‘red’ pressure point
connects with ‘red’ handled tap.
Tighten connecting nuts, keeping

Red

White

IOM FS Iss 9; April 2012; ECR1269 Page 5 of 8

2.4 Installation In-Line

Red

White

a) Ensure direction arrow is consistent with viewed direction of flow and position Fireflange between pipeline

flanges concentrically. Concentricity can be achieved by ensuring the carrier outside diameter is central to
the fixing bolts.

b) Firegroove type should be fitted with approved couplings suitable for groove cut joints.

c) When fitting Fireflange type, ensure that any sealing gaskets do not obstruct the pipe line or carrier bore.

Size/model Min ID Gasket Permissible

50 53mm

80 79mm
100 103mm
150 155mm
200 204mm

IOM FS Iss 9; April 2012; ECR1269 Page 6 of 8

3 Operation

3.1 Flow Test Ranges

The Firesure flowmeter is designed to test that the automatic sprinkler installation meets the required flow rate
needs. Each size of flowmeter meets a particular duty as shown below.

Size Flow Range

50 150-700

80 300-1600
100 500-3500
150 900-7900
200 2000-15000

3.2 Flow Testing and Reading

1. With bypass taps in closed position direct flow through

meter pipe line.

2. Open bypass indicator taps.

Red Tap

3. Bleed air from bypass by opening bleed assembly one

revolution.

Closed

4. Close bleed assembly when air is bled.

5. Press restrictor button full home and release.

6. Flow rate is shown by aligning the top of the float with scale

White

Tap

markings. Test flows are highlighted on the scale.

7. When test is completed, close bypass taps and drain by

opening drain assembly and bleed assembly one turn.

8. Visually check filter bowl. If dirty, remove by unscrewing

fully and clean filter element.

9. After draining close filter and bleed assemblies.

3.3 Fault Checking

Observation Possible Causes Remedy
No Flow Indication. Bypass taps closed.

Restrictor clogged.

Connections reversed to flow.

Flow Indication Low. Restrictor clogged.

Filter heavily clogged.

Air trapped in bypass.

Orifice carrier reverse installed

Open Taps.

Press & release restrictor button or
remove and visually check
restrictor.

Check procedure.
As above.

Remove and clean filter.

Bleed air from bypass.

Check flow direction against
carrier label arrow.

Open

Filter and Drain Assembly

Open

IOM FS Iss 9; April 2012; ECR1269 Page 7 of 8

4 Maintenance

4.1 Changing Glass Indicator

In case of breakage a glass tube indicator would be required. Refer first to the black printed Firesure model
number F3/- on the carrier label or tube before ordering a replacement.
NOTE: This model uses BLACK scaled tubes. These should not be replaced with RED scaled tubes which are
used for the extended indicator model (Firesure X).

1. Remove Cover

2. Remove Wedges

3. Push inserts back into end
blocks

4. Tilt glass out of backplate

5. Assembly is in reverse
order.

4.2 Recommended Spares

If the installation and operating procedures are followed there should be no need for maintenance. In the event of
accidental damage or loss the following spare parts are available:

Restrictor and bleed assembly

Filter element and drain

Glass Tube Indicator

Seals Kit

Part No.

S1000

S1001

F3/-

S1002

IOM FS Iss 9; April 2012; ECR1269 Page 8 of 8