2
HP
Replacing the Chamber Block
HP-
150
/
200
REPLACING THE CHAMBER BLOCK
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.
STEP
1
STEP
1
REMOVAL OF THE CHAMBER BLOCKS
To remove the upper housing.
(Refer to
REMOVING UPPER HOUSING
)
Remove the sound absorber.
STEP
2
STEP
2
Pull out the L-tube from the casing block.
STEP
3
STEP
3
Remove the 4 screws holding the chamber block
and the casing block.
(4 screws on each side)