Maintaining The Load Limiting Stage - Honeywell HON 5020 User And Maintenance Manual

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8.5.5

Maintaining the load limiting stage

Falling components
HON 5020 gas pressure regulator with HON 630 pilot
Figure
Depending on the specific pilot version, proceed as indicated in the relevant section:
For the multi-stage pilot version: Maintaining the load limiting stage (see page 82)
For the single-stage pilot version: Maintaining the fine mesh filter (see page 85)
Crush and impact hazard posed by components falling or toppling over accidentally.
When working with heavy components that have been removed or are yet to be installed,
injury may result if the components start moving in an uncontrolled manner, e.g., fall down
from the working surface or topple over.
 Place removed components exclusively on level, horizontal working surfaces with enough
load-bearing capacity.
 If necessary, secure removed components so that they will not fall or topple over.
 Wear the required personal protective equipment.
 Exercise caution when performing the relevant tasks.
Step Description
46 Lubricate the thread surfaces.
Put the base plate back in place.
Tighten the screws in a criss-cross se-
quence. Observe the tightening torque
information provided in the table before
this section.
47
Unscrew the adjusting screw (2) and
remove it from the base plate.
Clean and lubricate the adjusting screw.
48 Replace the hex flange nut (1) with a new
one.
Lubricate the thread surfaces.
49
Screw the spring adjuster (2) back in a bit.
The correct setpoint adjustment cannot be
carried out until before commissioning
with the pilot installed.
Maintenance
82