Series 751 FireLock
®
European Alarm Check Valve Stations
1
TABLE OF CONTENTS
Hazard Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Installer Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Trim Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Exploded View Drawing – Trim Components . . . . . . . . . . . . .4
Exploded View Drawing – Internal Valve Components . . . . . .5
Important Installation Information . . . . . . . . . . . . . . . . . . . . . .5
Placing the System in Service . . . . . . . . . . . . . . . . . . . . . . . . .6
External Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Monthly Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Required Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Main Drain Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Flow Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Required Internal Inspection . . . . . . . . . . . . . . . . . . . . . . . . .10
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Removing and Replacing Clapper Seal for
DN 100 and DN 150 Size Valves . . . . . . . . . . . . . . . . . . . .12
Removing and Replacing Clapper Assembly . . . . . . . . . . 13
Installing Cover Plate Gasket and Cover Plate . . . . . . . . . 14
Troubleshooting – Series 751 Alarm Check Valve . . . . . . . . .16
Facilities Locations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B/C
HAZARD IDENTIFICATION
Definitions for identifying the various hazard levels are provided
below.
This safety alert symbol indicates important safety
messages. When you see this symbol, be alert to
the possibility of personal injury. Carefully read and
fully understand the message that follows.
WARNING
The use of the word “WARNING” identifies the presence
of hazards or unsafe practices that could result in death
or serious personal injury if instructions, including rec-
ommended precautions, are not followed.
CAUTION
The use of the word “CAUTION” identifies possible haz-
ards or unsafe practices that could result in personal
injury and product or property damage if instructions,
including recommended precautions, are not followed.
NOTICE
The use of the word “NOTICE” identifies special
instructions that are important but not related to
hazards.