172-65167MA-10 (VA1/VA3/VA4/VA5) 1 Oct 2021
8
Maintenance
Take measures to prevent people from coming into direct contact with
product outlets.
Failure to do so may result in burns or other injury from the discharge of fluids.
Be sure to use only the recommended components when repairing the
product, and NEVER attempt to modify the product in any way.
Failure to observe these precautions may result in damage to the product or
burns or other injury due to malfunction or the discharge of fluids.
Operational Check
A visual inspection of the following items should be done on a daily basis to
determine whether the product is operating properly or has failed.
If the product should fail, it may cause water leakage or hindrance to water flow.
Normal
: Air is discharged as it accumulates, with the air vent
closing (with no leakage) when no air is present in the
piping.
Blocked
(Discharge Impossible)
: No air is discharged though air accumulates in the air
vent.
NOTE: Once the air vent closes, it will remain closed until internal pressure
drops to near or below atmospheric pressure. This condition may be
confused with a malfunction (blocked). If air is expected to accumulate
in the piping during operation, use together with an automatic air vent.
Leakage
: Water is discharged or leaks through the product outlet
during closed position.
Parts Inspection
When parts have been removed, or during periodic inspections, use the following
table to inspect the parts and replace any that are found to be defective.
Procedure
Gasket(s):
Check for warping and damage
Valve Seat: Check for scratches or wear
Float:
Check for scratches or dents
Float Guide: Check for damage
CAUTION
