MAINTENANCE
The following sections instruct on how to remove and replace internal
valve components. Care must be taken to avoid damage to parts during
removal and installation.
WARNING
Depressurize and drain the piping system
before attempting to remove the cover plate
from the valve.
Failure to follow this instruction could result
in serious personal injury and/or property
da
mage.
•
CAUTION
Any activities that require taking the valve
out of service may eliminate the fire protec-
tion provided.
Before servicing or testing the system, notify
the authority having jurisdiction.
Consideration of a fire patrol should be given
in the affected areas.
Failure to follow these instructions could result
in serious personal injury and/or property
da
mage.
•
•
•
REMOV
ING AND REPLACING THE CLAPPER SEAL
1. Perform steps 1 – 8 of the "Required Internal Inspection" section,
starting on page 29.
2. Remove the seal assembly bolt/bolt seal from the clapper seal.
3. Remove the seal-retaining ring.
CAUTION
DO NOT pry the seal washer out of the clapper seal from the
inner hole.
Failure to follow this instruction could damage the seal washer,
resulting in improper clapper sealing and valve leakage.
•
4. Pry the edge of the seal washer from inside the clapper seal, as
shown above. DO NOT PRY THE SEAL WASHER OUT FROM
THE INNER HOLE.
5. Remove the seal washer from the clapper seal. Dry up any mois-
ture that is under the seal washer and on the clapper seal.
CAUTION
Use only Victaulic-supplied replacement parts.
Failure to follow this instruction could cause improper valve
operation, resulting in property damage.
•
I-756LPA.VDS_26
FireLock
®
European Dry Valve Stations
SERIES 756
WITH SERIES 776 LOW-PRESSURE ACTUATOR
I-756LPA.VDS
INSTALLATION, 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
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