HP-
100
/
120
REPLACING THE CHAMBER BLOCK
HP
R
e
p
lacin
g
th
e
Ch
a
m
b
e
r
Bl
o
c
k
！
CAUTION
●
Be sure to unplug the pump unit.
●
Replace the diaphragms and the valves with new ones at least once a year to one and a
half year regularly in order to maintain their initial performance.
●
For chamber block replacement, be sure to change both chamber blocks at the same time.
●
The rod employs powerful permanent magnets. Therefore, be sure to remove your watch
and any other precision machines before operation as they may be affected by the
strong magnetic force.
●
Do not put the actuating rod close to a magnetic card, magnetic disk or other magnetic
media as the data may be destroyed.
S
S
T
T
E
E
P
P
1
1
REMOVAL OF THE CHAMBER BLOCKS
To remove the upper housing.
(Refer to
“
REMOVING UPPER HOUSING
”
)
Remove the sound absorber.
S
S
T
T
E
E
P
P
2
2
Uudo the frame screws and remove the frame
cover.
S
S
T
T
E
E
P
P
3
3
Pull out the L-tube from the casing block.
2
