Maintenance
HON 670 / HON 671 Controllers Component Documentation
19
Observe the following cleaning instructions:
▪
Before assembly, all parts must be cleaned in order to remove any foreign particles
(swarf) and soiling.
▪
If screws, bolts, or washers are replaced with identical new parts, any oil on these new
parts must first be removed.
Proceed as follows:
Figure
Step
Description
1
Unscrew screw connections (1) and (2) to
disconnect the pipe connections.
Take off the pressure unit.
Proceed as follows:
Maintenance on the controller with diaphragm measuring unit
(see page 19)
Maintenance on the controller with metal bellows measuring unit
(see page 27)
Maintenance on the pressure unit
(see page 35)
4.4
Maintenance on the controller with diaphragm measuring unit
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.
Observe the following cleaning instructions:
▪
Before assembly, all parts must be cleaned in order to remove any foreign particles
(swarf) and soiling.
▪
If screws, bolts, or washers are replaced with identical new parts, any oil on these new
parts must first be removed.
Cleaning
Removing the pressure
unit from the controller
Next task
Falling components
Cleaning
