Cleaning - SPX APV DELTA DF plus 2 Operating Manual

DELTA DFplus2 - UK1 / qxd.12.2004
upper
valve shaft lifted
valve shaft
upper
valve shaft
closed
valve shaft
Double Seat Valve
DELTA DFplus2
Operating Manual: rev. 1
5.

Cleaning

- Cleaning liquid quantity per CIP spraying cycle:
1,5" - 6"
- Cleaning pressure at CIP cleaning connection:
*
The seat lift cycles refer to a cleaning pressure of
p = 3 - 5 bar.
*
The cleaning liquid quantity must be determined by the operator
who adjusts the opening stroke.
- Assembly and adjustment of the seat lift actuator
see operating manual:
*
Depending on the pressure ratio, cleaning temperatures,
leakage
cleaning steps and degree of soiling, cleaning parameters must
chamber
be changed to suit.
*
with optimum use of the seat lift actuator.
Seat lifting in the upper area
The upper valve shaft is lifted via the connection (B) at the
seat lift actuator.
By lifting of the upper valve shaft, cleaning liquid flows over the
upper seat seal into the leakage chamber and cleans this area.
The cleaning liquid is drained at the inner pipe of the lower valve
shaft to the bottom.
lower
closed
Seat lifting in the lower area
The lower valve shaft is lifted via the connection (A) at the
seat lift actuator.
By lifting of the lower valve shaft, cleaning liquid flows over the
lower seat seal into the leakage chamber and cleans this area.
The cleaning liquid is drained at the inner pipe of the lower valve
shaft to the bottom.
lower
lifted
about 5 - 10l/min
min. 3 bar / max. 5 bar
seat lift actuator
double-seat valves D2 / DFplus2
UK
8