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APV_VRA_UK-3_032017.indd
Vacuum Valve
DELTA VRA 11
Instruction Manual: UK – rev. 3
APV
UK
12. Service Instructions
12.5. Change of response pressure
- The standard adjustment of the set pressure amounts to 40 mm
WC.
1.
Loosen the hexagon nut (15) and dismantle the protective cover
(17) together with the seat lift actuator (13).
2.
Loosen the hexagon nuts (6):
- By turning the lower nut (6) to the right, the response pressure can
be reduced to max. 65 mm WC.
- By turning the lower nut (6) to the left, the response pressure can be
reduced to min. 35 mm WC.
3.
After re-adjustment, tighten the nuts (6) against one another and
install the protective cover with the seat lift actuator.