00197463-03_SM_CPP_Customer_EN.pdf - 第89页

7 Pressure control valve (PRV) 7.4 Replacing small parts on the PRV Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018 89 Fig.142: Blowing through the PRV ► Clean all the openings of the pressure control valve with …

7 Pressure control valve (PRV)

7.4 Replacing small parts on the PRV

88 Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018

Fig.140: Checking the PRV inside

► Check the inside of the PRV for damage.

► If the inside of the PRV is damaged, replace the

whole PRV.

► If the inside is not damaged, proceed with the

next step.

Fig.141: Cleaning

► Clean the seat of the plunger tip and the venturi

nozzle until the cotton swab is no longer dirty

when it comes out.

Use a cotton swab coated with isopropyl.

7 Pressure control valve (PRV)

7.4 Replacing small parts on the PRV

Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018 89

Fig.142: Blowing through the PRV

► Clean all the openings of the pressure control

valve with a compressed air pistol.

Observe the order of work:(1) to(5).

Fig.143: Cleaning the inside

► Clean the inside with a lint-free cloth soaked in

isopropyl.

Fig.144: Fitting the elbow pipe connector

► Fit the elbow pipe connector and fasten this with

a torque of 0.2Nm.

7 Pressure control valve (PRV)

7.4 Replacing small parts on the PRV

90 Service Manual SIPLACE Multistar (CPP / CPP M) 02/2018

Fig.145: Cleaning the plunger

► Clean the plunger with a lint-free cloth soaked in

isopropyl.

Fig.146: Grease the plunger

► Grease the plunger slightly at the higher positions

with Isoflex Topas 5051.

Remove any excess grease from the gaps.

Fig.147: Inserting the plunger

► Push the valve plunger back into the PRV.

The nib of the plunger must engage in the recess

on the valve.

Check by trying to turn the plunger. If it can be

turned, the nib has not yet engaged in the recess.

You might need to use the tool provided (see

next step).

Fig.148: Inserting the plastic ring

► Insert the white plastic ring. Turn the ring so that

the opening of the ring is level with the groove.