00197551-01_MM_CPP-CP-Twin_Kunde_en - 第71页
Maintenance Tasks for Pressure Control Valve 6.3.1 Checking/Cleaning the Pressure Control Valve Performing Ma intenance Tasks Maintenance Manual SIPLACE Placement Heads CPP, C &P20, Twin 71 Grease and insert the plun…
Maintenance Tasks for Pressure Control Valve
Performing Maintenance Tasks 6.3.1 Checking/Cleaning the Pressure Control Valve
70 Maintenance Manual SIPLACE Placement Heads CPP, C&P20, Twin
Checking the Pressure Control Valve
Cleaning the Pressure Control Valve
Check the plunger
► Check the plunger for signs of scraping on the front
guideway (1).
► Check the plunger for signs of scraping on the back
guideway (2).
► If there are signs of scraping, you will need to replace
the complete pressure control valve.
In this case, further maintenance tasks do not need to
be performed on the pressure control valve.
Rust on the pressure control valve
► Check the inside of the pressure control valve.
► If the inside of the pressure control valve is damaged,
you will need to replace the complete pressure con-
trol valve.
In this case, further maintenance tasks do not need to
be performed on the pressure control valve.
Clean the basic body of the valve
► Clean the seat of the plunger tip and the Venturi noz-
zle with a cleaning stick dipped in ethanol.
Maintenance Tasks for Pressure Control Valve
6.3.1 Checking/Cleaning the Pressure Control Valve Performing Maintenance Tasks
Maintenance Manual SIPLACE Placement Heads CPP, C&P20, Twin 71
Grease and insert the plunger
Cleaning with compressed air
► Clean all openings in the pressure control valve with
compressed air.
Dirty and clean plungers
Black residues can form on the plungers.
A = dirty plunger
B = Clean plunger
1. Tip
2. Anti-twist lock
► Wet a lint-free cloth with ethanol.
► Clean the plunger with a lint-free cloth, dipped in eth-
anol.
Pay particular attention to the cleanliness of the tip.
Grease the plunger
► Grease the guideways (1) of the plunger slightly with
Isoflex Topas 5051.
► Wipe off any excess grease.
Maintenance Tasks for Pressure Control Valve
Performing Maintenance Tasks 6.3.1 Checking/Cleaning the Pressure Control Valve
72 Maintenance Manual SIPLACE Placement Heads CPP, C&P20, Twin
Cleaning the Valve Sensor
Assembling the valve
► Insert the plunger into the basic body of the valve.
The anti-twist lock (2) must engage in the groove (1).
► Check:
The plunger must move back and forth without effort.
Try to turn the plunger. If it can be turned, the anti-
twist lock has not yet engaged with the groove.
► Make sure that the transparent plastic sheet is posi-
tioned correctly on the basic body of the valve.
Cleaning the valve sensor
CAUTION!
The valve sensor can be irreparably damaged by com-
pressed air.
NEVER blow air directly into the vacuum sensor.
► Blow the compressed air over the vacuum sensor
tube, as shown in the diagram (1).
⇨ The venturi effect created sucks dirt out of the
tube.
► Clean the vacuum sensor with a cleaning stick.
O-ring on vacuum sensor
► Slightly grease the O-ring (1) with Isoflex Topas 5051
and position the O-ring onto the vacuum sensor.