Grain Systems PNEG-526 - Manual (Page 120)

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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.
Maintenance Instructions
Maxon valves are endurance tested far in excess of
the most stringent requirements of the various ap-
proval agencies. They are designed for long life even
if frequently cycled, and to be as maintenance-free
and trouble-free as possible.
Every Maxon valve is operationally tested and
meets the requirements of ANSI B16.104 Class VI
Seat Leakage when it leaves our plant.
Top assembly components require no field
lubrication and should never be oiled.
Auxiliary switches, motors and solenoids, may be
replaced in the field.
WARNING: Do not attempt field repair of valve
body, top assembly or motor drive unit. Any
alterations void all warranties.
Valve leak test, performed with valve in line as
prescribed by jurisdictional authorities, is strongly
encouraged and should be done on a regularly
scheduled basis. In rare instances where valve shows
leakage, perform
Pre-Operational Exercising (see
below) and retest. If leakage does not stop, remove
valve from service.
Pre-operational exercising: Prior to initial fluid
flow start-up and with upstream manual cock still
closed, operate the valve electrically for 10-15 cycles.
This not only provides an electrical check, but also
wipes valve body disc and seat free of accumulated
foreign matter.
Maxon valves are designed to be used with
clean fluids. If foreign material is present in the
fuel line, it will be necessary to inspect the
valve to make certain it is operating properly. If
abnormal opening or closing is observed, the
valve should be removed from service. Contact
your Maxon representative for instructions.
Insurance authorities agree . . .
. . . that the safety of any industrial fuel burning
installation is dependent upon well-trained
operators who are able to follow instructions and
to react properly in cases of emergency. Their
knowledge of, and training on, the specific
installation are both vital to safe operation.
Safety controls may get out of order without the
operator becoming aware of it unless shutdowns
result. Production-minded operators have been
known to bypass faulty controls without reporting
the trouble.
Continued safe operation of any installation is
then assured only if the plant management
carefully develops an exact schedule for regular
periodic inspection of all safety controls, insisting
that it then be rigidly adhered to.
A main gas shut-off cock should be located
upstream from all other fuel train piping compo-
nents and used to shut off all flow of fuel for
servicing and other shutdowns.
All safety devices should be tested at least
monthly* and more often if deemed advisable.
Periodic testing for tightness of manual or motor-
ized shut-off valve closure is equally essential.
*per NFPA 86-Appendix B-4 (1995)
Page 6100-S-6 Electro-Mechanical Valves
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.