Malfunctions - Honeywell HON 512 User And Maintenance Manual

7.1

Malfunctions

Pressurized parts
Malfunctions and ab-
normalities
HON 512 with HON 650 pilot user manual
Risk of serious injury posed by pressurized components moving in an
uncontrolled manner when handled improperly.
If not handled properly or in the event of a defect, gas can escape from pressurized compo-
nents under high pressure and cause serious injuries and even death. Before you start work-
ing on these components:
 Close all connections leading to the gas-carrying line.
 Establish a depressurized status. Residual amounts of energy must be depressurized as
well.
Always contact the manufacturer's After-Sales Service Department for troubleshooting if one
of the following occurs:
▪ You are not absolutely sure what the exact fault is.
▪ The fault that occurred is not described in the table below.
▪ The possible cause behind the fault is not listed in the table below.
▪ Despite your troubleshooting attempts, the fault persists.
The following table contains a description of malfunctions and abnormalities that may occur
during the operation and lists procedures to correct them:
Malfunction Possible causes
No flow Pilot: Not connected correctly
Pilot: Not enough amplification
Pilot: The filter is dirty
Pilot: The diaphragm is defective
Actuator assembly: The diaphragm
is defective
Low flow rate Pilot: Not enough amplification
Pilot: The filter is dirty
Pilot: The diaphragm is defective
Actuator assembly: The diaphragm
is defective
Malfunctions
Correction
Check the pilot's operation and
connections and make any adjust-
ments required
Adjust the amplifying valve as
specified in Adjusting the amplify-
ing valve (see page 59)
Clean the filter insert as specified in
the Maintaining the filter section in
Maintaining the pilot (see page
102)
Perform maintenance on the pilot
as specified in Maintaining the pilot
(see page 102)
Perform maintenance on the
actuator assembly as specified in
the Maintenance (see page 65)
section
Adjust the amplifying valve as
specified in Adjusting the amplify-
ing valve (see page 59)
Perform maintenance on the filter
as specified in the Maintenance
(see page 65) section
Perform maintenance on the pilot
as specified in Maintaining the pilot
(see page 102)
Perform maintenance on the
actuator assembly as specified in
the Maintenance (see page 65)
section
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