MUELLER CO. ShurStop 812 PE, Operating And Instruction Manual

12

proBlem 

Cause 

solution

Drilling time too long 

Worn cutter 

Replace the cutter.

  Gas leakage between the  

  drilling shaft and the screw 

Worn O-rings 

Replace the O-rings. 

  Inadequate sealing of the stopper   No lubrication performed on the 

With PURITY-FG Spray or equivalent

angled walls of the sealing ring  

lubricate the angled walls of the 

sealing ring expanding and retracting

it completely. 

No lubrication performed on the  

Lubricate the sealing disk with

sealing disk of the plug bell 

PURITY-FG Spray or equivalent. 

Presence of residue on the bottom   Clean again using the

of the pipe 

inspection / cleaning machine.

  Inadequate sealing of the 

Insufficient tightening of the screws 

  sealing disk 

of the flange that compresses the 

Tighten the screws slightly.   

sealing disk

  Inadequate sealing of the valve 

Equalization valve not closed  

Close the equalization valve.

Residues on the sealing O-ring 

Replace the O-rings before the 

next use.

MUELLER

® 

Shur Stop

TM

 Unit 812 PE Line Stopping System

Diagnostics / Storage

13

TrOUBLeshOOTiNG

• Store the equipment in a closed 

place.
• Protect the equipment from 

humidity and extreme temperature 

changes.

In case of long periods of inactivity, 

the equipment must be stored taking 

suitable precautions for the place it 

is stored in and the duration of the 

storage:

• Prevent corrosive substance 

from coming into contact with the 

equipment.

sTOrAGe