Installation Manual, Maintenance and Operation
Pressure Regulating Valve – Model Horus
MI-18
Elaborate
Verified / Approved
CSQ
Date
Review
Page
J.Junior
Celso Nieto
JM
25/11/16 04
18 de 32
Feedthrough or regulator locked in
the open position
Shutter (pos 48 SC; pos 57 SO) of
the locked main regulator
Adjust the unloading valve
(needle) .Check state shutter and
anti-friction rings proceeding
replacement or cleaning if
necessary (minimum of grease
should be applied to assembly of
these items, preferably using bi-
molybdenum sulfide).
Broken or damaged impulse line
Check status of impulse line and
proceed to replace it if necessary.
Headquarters (pos 44 SO; pos 38
SC) damaged or particulate
matter between the shutter and
the seat.
Make cleaning and check state
headquarters, if it has no apparent
marks of damage proceed to the
assembly and check the lock up,
replace if damaged.
Disruption of the main diaphragm
(pos 3) of the FA valve (Spring to
open)
Replace the main diaphragm
Output pressure decrease and or
insufficient flow
Dirt on the filter
Provide filter cleaning or replacing
the filter element.
Power Outage
1) Check the locking of the
booster shutter (G-43). Make sure
the pilot's seat is blocked.
Passage in the main diaphragm
Replace the main diaphragm
Exhaust gas by the pilot cover the
breather.
Breaking the diaphragm
Replace the diaphragm.
Gas leak at door trim booster
Booster trim disruption (G43)
Replace the gasket.
