Honeywell HON 5020, User And Maintenance Manual

Page: 48 / 114

Maintenance
HON 5020 gas pressure regulator with HON 630 pilot 48
When conducting work involving the pipework, please always observe the following:
Figure Description
Do not twist the pipe connections in the assemblies.
Use a second spanner wrench for securing when
loosening and tightening pipe joints.
If … then …
You want to perform maintenance on the pilot
only

The measuring impulse line and the vent line
on the pilot need to be uninstalled.

The inlet pressure line, motorization line, and
outlet pressure line on the pilot need to be
uninstalled.

The actuator assembly, including the pipes, can
remain in the gas regulating line.
You want to perform maintenance on the actua-
tor assembly only

The motorization line between the pilot and
the actuator assembly needs to be uninstalled.

The actuator assembly can remain in the gas
regulating line.

The pilot, including the remaining pipes (with
the exception of the motorization line), can
remain in the gas regulating line.
You want to perform maintenance on both the
actuator assembly and the pilot

The measuring impulse line and the vent line
on the pilot need to be uninstalled.

The motorization line between the pilot and
the actuator assembly needs to be uninstalled.

The pilot needs to be removed from the
actuator assembly.

The actuator assembly, including the remaining
pipes (with the exception of the motorization
line), can remain in the gas regulating line.
Protecting the pipe con-
nections from being
twisted
Removing
components