Honeywell HON 512, User And Maintenance Manual

Page: 62 / 208

Malfunctions
HON 512 with HON 650 pilot user manual 62
7.1 Malfunctions
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 Correction
No flow Pilot: Not connected correctly Check the pilot’s operation and
connections and make any adjust-
ments required
Pilot: Not enough amplification Adjust the amplifying valve as
specified in
Adjusting the amplify-
ing valve (see page 59)
Pilot: The filter is dirty Clean the filter insert as specified in
the
Maintaining the filter section in
Maintaining the pilot (see page
102)
Pilot: The diaphragm is defective Perform maintenance on the pilot
as specified in
Maintaining the pilot
(see page 102)
Actuator assembly: The diaphragm
is defective Perform maintenance on the
actuator assembly as specified in
the
Maintenance (see page 65)
section
Low flow rate Pilot: Not enough amplification Adjust the amplifying valve as
specified in
Adjusting the amplify-
ing valve (see page 59)
Pilot: The filter is dirty Perform maintenance on the filter
as specified in the
Maintenance
(see page 65) section
Pilot: The diaphragm is defective Perform maintenance on the pilot
as specified in
Maintaining the pilot
(see page 102)
Actuator assembly: The diaphragm
is defective Perform maintenance on the
actuator assembly as specified in
the
Maintenance (see page 65)
section
Pressurized parts
Malfunctions and ab-
normalities