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T-Product · GIK, GIK..B · 2004 November
Maintenance
All regulators which control the systems pressure are
subject to periodic servicing by authorized personnel.
By carrying out a regular maintenance schedule, you can
prevent problems from occuring. The regulator type and
its service conditions will help you determine how often
to conduct inspections. The more severe the working
conditions, the more frequently you should examine the
regulator.
Generally, small, modern regulators can operate for
considerable periods without attention, minimizing the
need for periodic maintenance.
When a regulator is serviced, the following general pro
-
cedure should be followed.
1 Check that a shut off valve is located in the area of
the regulator.
2 Try to ensure that there is a clear working area, and
that you have somewhere to put the regulator com
-
ponents, once removed, so they will not be lost or
damaged.
3 Always use the correct tools, in the proper sizes, to
dismantle the regulator. Rough treatment can dam
-
age an otherwise useable component.
4 If available, follow the maintenance instructions issued
by the manufacturer of the regulator.
5 Make careful note of the position of each component
before removal to aid reassembly.
6 Unless the maintenance instructions say otherwise,
take off the top cover and remove the loading
spring.
7 Dismantle the regulator, removing the diaphragm(s)
and valve.
8 Clean all parts of the body and casings.
9 Check the diaphragms and replace if necessary.
10 Clean the regulator valve. If it has a rubber seat, check
and replace if necessary.
11 Examine the orifice or valve seating. Check for burrs
and replace if damaged or worn. Avoid the use of
abrasives on valve or seats.
12 Reassemble the parts in reverse order.
13 When reassembling a ring of screws or bolts, tighten
gradually and in opposing pairs.
14 Check the regulator for leakage.
15 Reset outlet pressure to the regulator.
16 Update maintenance records for the unit.