2
HP
ReplacingtheChamberBlock
REPLACING THE CHAMBER BLOCK
●Besuretounplugthepumpunit.
●Replacethediaphragmsandthevalveswithnewonesatleastonceayeartooneand
ahalfyearregularlyinordertomaintaintheirinitialperformance.
●Forchamberblockreplacement,besuretochangebothchamberblocksatthesame
time.
●The rod employs powerful permanent magnets. Therefore, be sure to remove your
watchandanyotherprecisionmachinesbeforeoperationastheymaybeaffectedby
thestrongmagneticforce.
●Do not put the actuating rod close to a magnetic card, a magnetic disk or other
magneticmediaasthedatamaybedestroyed.
STEP
1
STEP
1
REMOVAL OF THE CHAMBER BLOCKS
Toremovetheupperhousing.
Toremovethesoundabsorber.
PullouttheL-tubefromthecasingblock.
Remove the 4 screws holding the chamber block
andthecasingblock.(4screwsoneachside)
STEP
2
STEP
2
Remove1U-locknutsfromonesideholdingthe
diaphragmmountingblocktotherod.
●Usethenutdrivertoloosen(ortighten)theU-locknut.
STEP
3
STEP
3
Remove one of the diaphragm mounting blocks
from the actuating rod and pull out the other
diaphragm mounting block with the rod. After
that,separatethediaphragmmountingblockand
therod.
This completes the chamber block removal
procedure.
CAUTION!
HP-
30/40/50