Honeywell HON COCON 13 - Troubleshooting

Operators manual
© 2017 Honeywell International Inc.
Operators manual underground gas pressure reducing station
Type: HON COCON 13
Page 26
4.5–Troubleshooting
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Thecartridgemustbereadjustedifitisnotoperatingasrequired.Thecartridge'soperatingobjectivesaredescribed
inparagraph2.4onpage13.Adjustmentdatacanbefoundinparagraph4.4.

Failurescanbecausedby:
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Problem1 : Theoutletpressureistoohigh.
Cause1a : The
regulatorpilothasnotbeencorrectlyadjusted.
Solution1a : Readadjustthepilot.Seeparagraph4.4.

Cause1b : Theregulatorhasfailedopen.Thessdvalveisclosed
Solution1b : Replacethecartridgewithasparecartridge.Checkthedefectivecartridgeintheworkshop.

Problem2 :
Theoutletpressureistoolow.
Cause2a : Theregulatorpilothasnotbeencorrectlyadjusted.
Solution2a : Readjustthepilot.Seeparagraph4.7.

Cause2b : Thedifferentialpressurep(p1–p2)istoosmall.
Solution2b : Increasetheinletpressure.

Cause2c : Thefilter
isseverelypolluted.
Solution2c : Replacethefilterwithanewone.Seeparagraph4.10.3..

Problem3 : Gasisrequired,butisnotpassingthrough.
Cause3a : Theballvalveisclosed.
Solution3a : Opentheballvalve.

Cause3b : Theoutletvalveis
closed.
Solution3b : Opentheoutletvalve.

Cause3c : Thevalveinthesupplypipe,locatedwithinadistanceof5metersfromthestation'sinlethas
closed.
Solution3c : Openthevalveinthesupplypipe.

Cause3d : Thevalveinthedischargepipe,located
withinadistanceof5metersofthestation'soutlethas
closed.
Solution3d : Openthevalveinthedischargepipe.
Cause3e : Theregulatorpilothasnotbeencorrectlyadjusted.
Solution3e : Readjustthepilot.Seeparagraph4.7.

Cause3f : Thessdvalvehasclosed.
Solution3f : Replacethecartridgewithasparecartridge.Checkthedefectcartridgeintheworkshop.

Problem5 : Thereiswateronthecartridge.
Cause5 : Thecartridgeandthepitcoversealsareworn.
Solution5 : Replacethesealrings.

Problem6 : Thereisdust
inthedischargepipe.
Cause6 : Thefilterisdefect.
Solution6 :Replacethedefectfilterwithanewfilter.Seeparagraph4.8.3..
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