VACUUBRAND PC 620 User Manual
Page 40
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.: 999029 / 01/10/2009
page 40 of 48
➨ Use open-ended wrench (w/f 14) to turn elbow fitting 1/4 of a
turn, remove hose.
☞ Do not remove the elbow fitting from the pump head. Through
reassembly a leak may result.
➨ To check valves use hex key to remove four socket head
screws from pump head and remove upper housing (hous-
ing cover with housing cover insert), head cover and valves.
☞ Never remove parts by using a spiky or sharp-edged tool
(e.g. screw driver), we recommend to use a rubber mallet or
compressed air (to be blown carefully into port).
➨ Remove head cover from housing cover insert and check
valves. Note position of valves and remove.
☞ Replace valves if necessary.
☞ Use petroleum ether or industrial solvent to remove depos-
its. Do not inhale.
head cover
housing cover with
housing cover insert
valve
connecting rod
housing
diaphragm
diaphragm clamping disc
with square head screw
diaphragm support disc
washer
View of the disassembled pump head parts