10
APV_VRA_UK-3_032017.indd
Vacuum Valve
DELTA VRA 11
Instruction Manual: UK – rev. 3
APV
UK
13. Trouble Shooting
The item numbers refer to the spare parts drawing RN 01.113
Removal of failures see chapter 12. Service Instructions.
Failure
Remedy
Leakage between housing and mating flange
(below drain channel)
Replace o-ring (25).
Leakage at drain channel
Replace o-ring (23).
Leakage at the valve seat
Replace seat seal (1).
Seat lifting not possible
Check function of seat lift actuator or replace it
completely.
Valve does not work
Check smooth running of the shaft, replace damaged
parts.
14. Spare Parts List
The reference numbers of the spare parts for the different valve
designs and sizes are included in the attached spare parts drawings
with corresponding lists.
Please indicate the following data to place an order for spare parts:
- number of required parts
- reference number
- designation.
subject to change