VACUUBRAND PC 3012 VARIO plastic housing - Manual (Page 107)

page 107 of 129
Loosen the clamping brackets (S) on the valve
heads (O).
➨
Unscrew at each clamping bracket the two
countersunk screws with a Torx driver T20.
Remove the clamping brackets.
Loosen connection fastener slightly.
➨
Turn the fillister head screw (L) with a Torx
driver T20 at most one turn.
+
Do not detach the fillister head screw from
the square nut (K).
➨
Open the hinged cover of the connection
fastener (Q) with a slotted screwdriver.
Replacing the valves
Q
O S
➨
Remove valve heads (O) along with the disc
springs (R), connection tube if applicable,
hose nozzles (P) and connection fasten-
ers (Q) or move the valve heads carefully
aside. Note position and orientation of the
valve heads.
+
Note position and alignment of valves (N).
➨
Check valves (N) and O-rings (M) for damage and soiling.
➨
Replace valves or O-rings if necessary.
➨
Use petroleum ether or other industrial solvent to remove deposits. Do
not inhale vapors.
O
R
N
Q