Series 756 FireLock
®
European Dry 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
Section View Drawing and Description –
Series 753-A Dry Actuator/Anti-Flood Device . . . . . . . . . . . . . . 6
Section View Drawing and Description –
Series 746 Dry Accelerator . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Compressor and Air Maintenance Trim Requirements . . . . . . 8
Air Supply Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Proper Air Supplies for Series 756 Dry Valves
Used with Series 753-A Dry Actuators Only . . . . . . . . . 9
Proper Air Supplies for Series 756 Dry Valves
Used with Series 753-A Dry Actuators and
Series 746 Dry Accelerators . . . . . . . . . . . . . . . . . . . . . 9
Important Installation Information . . . . . . . . . . . . . . . . . . . . . . . 9
Valve/Trim Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Important Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Hydrostatic Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Placing the System in Service . . . . . . . . . . . . . . . . . . . . . . . . . 11
External Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Weekly Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Monthly Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Required Tests. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Water Flow Alarm Test . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Water Level and Low-Air Alarm Tests . . . . . . . . . . . . . . . 16
Trip Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Partial Trip Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Full Trip Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Required Internal Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removing and Replacing Clapper Seal. . . . . . . . . . . . . . 23
Removing and Replacing Clapper Assembly . . . . . . . . . 24
Installing Cover Plate Gasket and Cover Plate . . . . . . . . 25
Cover Bolt Torque Requirements. . . . . . . . . . . . . . . . . . . 26
Removing and Replacing Piston Assembly . . . . . . . . . . . 26
Troubleshooting – Series 753-A Dry Actuator/
Anti-Flood Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Troubleshooting – Series 746 Dry Accelerator . . . . . . . . . . . . 27
Troubleshooting – System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Warranty. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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.
