Replacing the diaphragm – VACUUBRAND PC 3012 VARIO User Manual
Page 59
Documents are only to be used and distributed completely and unchanged. It is strictly the users’ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999164 / 19/05/2009
Opening the hose clip:
➨
Apply screw driver as shown and turn.
Replacing the diaphragm
➨
Disassemble head covers to check the diaphragm.
➨
Unscrew four (pump with two cylinders) or eight (pump
with four cylinders) socket head screws with a hex key size
5 and remove both head covers (pumps with two cylin-
ders: only one head cover) together with valve heads and
connections.
☞
It is not necessary to disassemble the valve heads, the
connection fasteners, or the hose connection between the
adjacent head covers (pumps with four cylinders).
☞
Check diaphragm for damage and replace if necessary.
➨
Lift diaphragm carefully sidewise.
☞
Never use a spiky or sharp-edged tool to lift the dia-
phragm.
➨
Use the diaphragm key to grip the diaphragm support disc
below the diaphragm.
➨
Unscrew diaphragm support disc with diaphragm and dia-
phragm clamping disc.
➨
Detach hose from hose clip at controller support.
➨
Use a Torx screw driver TX20 to unscrew the 4 screws fix-
ating the head cover cowling. Pay attention to the washers
under the screws and remove.
➨
Pull off head cover cowling carefully. Do not cant.
Detach the fixing of the connection tube to the other side of
the pump at the valve head.
PC 3002/3003/3004 VARIO at inlet side:
Detach the fixing of the connection tube to the other side of
the pump as well as the hose connection to the inlet/outlet of
the pumping unit at the valve head.
➨
Open the hose clip with a flat-bladed screw driver.
➨
Pull the tubing off the hose connector.