Victaulic FireLock 756 Series - User Manual

HANG THESE INSTRUCTIONS ON THE
INSTALLED VALVE FOR EASY FUTURE REFERENCE
WARNING
Failure to follow instructions and warnings can cause product
failure, resulting in serious personal injury and property
damage.
Read and understand all instructions before attempting to
install any Victaulic piping products.
Wear safety glasses, hardhat, and foot protection.
Save this installation, maintenance, and testing manual for
future reference.
If you need additional copies of any literature, or if you have
any questions concerning the safe installation and operation of
this product, contact Victaulic, Prijkelstraat 36, 9810 Nazareth,
Belgium, Phone: 32-9-381-1500.
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WARNING
0786
VdS
FireLock
®
European Dry Valve Stations
SERIES 756
WITH SERIES 776 LOW-PRESSURE ACTUATOR
I-756LPA.VDSINSTALLATION, MAINTENANCE, AND TESTING MANUAL
www.victaulic.com
VICTAULIC IS A REGISTERED TRADEMARK OF VICTAULIC COMPANY. © 2006 VICTAULIC COMPANY. ALL RIGHTS RESERVED. PRINTED IN THE USA.
REV_B
DISCONTINUED PRODUCT

Victaulic FireLock 756 Series Specifications

General

Application	Fire Protection Systems
UL Listed	Yes
FM Approved	Yes
Model Series	756 Series
Type	Pressure Reducing Valve
Pressure Rating	300 psi (20.7 bar)
Body Material	Ductile iron
Trim Material	Stainless Steel
End Connections	Grooved
Function	Automatically reduces a higher upstream pressure to a lower downstream pressure and maintains the downstream pressure at a relatively constant level.

Summary

Installer Safety Instructions

Section View Drawing and Description - Series 776 Low-Pressure Actuator

Section View Drawing and Description - Series 746-LPA Dry Accelerator

Air Supply Requirements

Important Installation Information

Compressor Requirements and Settings for Series 756 FireLock Dry Valves Installed with Series 746-LPA Dry Accelerators

Compressor requirements for specific valve/accelerator configurations.

Settings for Air Supervisory Pressure Switches and Alarm Pressure Switches

Remote System Test Valve Requirements

Valve;Trim Installation

Placing the System in Service

External Inspection

Required System Tests

Water Flow Alarm Test

Steps to perform a water flow alarm test.

Water Level and Low Air Alarm Tests

Procedures for water level and low air alarm tests.

Required Operational (Trip) Tests

Partial Operational (Trip) Test

Full Operational (Trip) Test

Required Internal Inspection

Troubleshooting

Troubleshooting - Series 776 Low-Pressure Actuator

Solutions for problems with the 776 Low-Pressure Actuator.

Troubleshooting - Series 746-LPA Dry Accelerator

Solutions for problems with the 746-LPA Dry Accelerator.

Troubleshooting - System

Solutions for general system troubleshooting issues.