Compacta - User s Manual
Compacta User_en ed 1 Feb 05.doc
Page
32
of 34
6.7
Changing a piston
Tools:
a)
Set of Allan wrenches
b)
Two new o-rings (only in case the old ones are worn)
c)
Wrench N°8 (metric size)
Procedure:
a)
Unscrew the bold on the bottomside of the piston (see
picture
6-9
a).
b)
Close the valve on the bottom of the canister.
c)
Disconnect the tube from the canister.
d)
Start a recirculation cycle and stop at half of its stroke.
e)
Unscrew the bold that connects the piston to the flange.
f)
Activate the end position sensor and restart a recirculation cycle.
g)
Press the emergency button when the defect piston can be taken out.
h)
Unscrew the two screws on the brass block (see
picture
6-9
b).
i)
Take a cup and pull out the cylinder. Use the cup to prevent leaking.
j)
Pull out the cylinder.
k)
Replace the cylinder and follow the procedure in reverse.
a)
b)
picture
6-9
exchanging piston
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