Grain Systems PNEG-526 - Manual (Page 119)

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CORPORATION
MUNCIE, INDIANA, USA
INDUSTRIAL COMBUSTION EQUIPMENT AND VALVES
Maxon practices a policy of continuous product improvement. It reserves the right to alter specifications without prior notice.
Operating Instructions
Electro-mechanical manual reset valves require
two positive actions to open: a half rotation of
handle to latch internal mechanism, and a reversed
half rotation of handle to open valve. This refers to
normally closed valves. With normally open valves,
the procedure is the same, but the valve body position
(i.e., open or closed) is opposite to the normally
closed version.
Remotely located manual reset valves may be
equipped with wheel-and-chain assembly. Instructions
to operate the valve are on hand grip. Locate counter-
weight overhead at pipe level and hand grip can be
brought down to convenient operating personnel
height.
Normally closed motorized valves begin open-
ing cycle immediately upon being powered; motor
runs only until full open position is reached. Normally
open valves begin to close immediately, and motor
runs until fully closed position is reached.
Refer to appropriate catalog bulletin and specifi-
cation page for operating sequence applying to your
specific valve.
Never operate valve until all essen-
tial allied equipment is operative and any neces-
sary purges completed. Failure of electro-mechani-
cally operated valve to operate normally indicates that
it is
not powered. Check this first! Then check
internal holding solenoid and/or motor operator.
Main system shut-off should always be accom-
plished with an upstream leak-tight manual fuel
cock.
All Maxon valves react within a fraction of a
second when de-energized (can drop out if electrical
power is interrupted for less than 1/2 cycle [8 ms]).
All electro-mechanical manual reset valves may
be operated manually when solenoid is electrically
energized, but electrical tripping is recommended
for normal shut-downs.
Operator should be aware of and observe characteristic opening/closing action of the valve. Should operation
ever become sluggish, remove valve from service and contact Maxon for recommendations.
Address inquiries to: Maxon Corporation, P.O. Box 2068, Muncie, IN 47307
Phone (765) 284-3304
FAX (765) 286-8394
www.maxoncorp.com
Always include valve serial number and nameplate information to insure positive identification.
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