Heidolph VAC control automatic - Manual (Page 58)

58
E
Clean and inspect pump heads:
Loosen coupling rings with open end spanner (SW 17).
Remove hose fitting from hose with box-end spanner
(SW 15) by ¼ revolution. Do not unthread fittings from
the pump heads.
 Check for leaks after re-installation.
Explosion drawing: pump
head
diaphrag
m
diaphragm cocking spring
with square-head bolt
cover
valve
lid
lid,
inside
housing
piston
rod
diaphragm
back-up ring