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8.2
Preparing for the maintenance
Preparation work for gas
pressure regulator
maintenance
Sample maintenance
instructions
HON 512 with HON 650 pilot user manual
Proceed as follows:
Step
Description
1
Have the maintenance
and servicing parts
ready
2
Preparing special tools
3
Have the required
lubricants and thread-
lockers ready
4
Preparing to disassem-
ble the device
5
Remove the device
from the gas regulating
line
6
Remove the pilot from
the actuator assembly
The maintenance instructions below are provided as examples for the various gas pressure
regulator designs and versions. In other words, it does not explicitly describe every single
version and design. Use the bills of materials to make sure that you replace all the mainte-
nance parts relevant to your specific device model during maintenance.
If you have trouble understanding the information in this documentation, contact the manu-
Explanation
Please refer to Additional information regarding spare parts (see
page 153) to find out which spare parts lists correspond your
specific gas pressure regulator model and have the correspond-
ing maintenance parts and servicing parts ready to go before
maintenance.
▪ The spare parts always required for maintaining the actuator
assembly are marked with an "x" in the "Maint." column in
the spare parts lists for the actuator assembly.
▪ The bills of materials for the pilots are broken down by
maintenance parts and servicing parts.
▪ Spare part drawings and bills of materials are listed in the
appendix (see page 152).
In addition to these maintenance parts, there are also servicing
parts that need to be checked during maintenance in order to
make sure that they are in working condition. and they must be
replaced if necessary. Because of this, it is recommended to have
the following servicing parts ready for maintenance in order to
avoid downtimes:
For the actuator assembly:
▪ Sleeve
▪ Compression spring(s)
▪ Guide rings
▪ Visual position indicator
▪ Wire springs (in the case of actuator assemblies with an
expander)
▪ Electrical displacement transducer
For the pilot:
▪ Compression spring(s)
▪ Pressure gauge(s)
▪ Filter insert
▪ In addition to standard tools, have the special tools required
for your specific gas pressure regulator model ready to go
before maintenance. Please refer to the Special tools section
in Lubricants, threadlockers, and tools (see page 202).
▪ You will also need a ballpoint pen or felt tip marker to perform
maintenance on the pilot.
For specifications concerning the lubricants and threadlockers
that must be used, please refer to the sections of the same name
under Lubricants, threadlockers, and tools (see page 202).
Follow the steps outlined in Preparing for disassembly (see page
145).
Follow the steps outlined in Disassembling the gas pressure
regulator (see page 147).
Disconnect all operating lines between the actuator assembly
and the pilot.
Maintenance
67
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