4
HP
Replacing the Chamber Block
HP-
150
/
200
REPLACING THE CHAMBER BLOCK
STEP
8
STEP
8
REPLACING THE VALVE
STEP
9
STEP
9
Insert each new valve into the center hold of valve
seat, and secure them by pulling with radio pliers.
●When reinstalling the valves, make sure the exhaust
and intake sides are correctly fitted.
STEP
10
STEP
10
Cut away end of respective valves pulling parts
(just in front of thick parts) by scissors or nippers.
Hold the valve chamber packing between casing A
and casing B.
Then, fix them with 5 screws.
STEP
11
STEP
11
Fit the actuating rod by aligning it with the groove
and tighten U-lock nut and flat washer by the nut
driver.
●Use new U-lock nut and washer, otherwise, U-lock nut
may work loose and cause malfunction.
FITTING CHAMBER BLOCKS
In case of replacing the whole diaphragm casing
block, move straight to
STEP 11
.
separate casing A and casing B, by removing 5
inner screws.
Remove the valves from casing B.
●If it is difficult to separate them, insert the tip of a
flatblade screwdriver into the clearance.
●Pull out the valves as they can be removed easily.
●Check if the valve chamber packing is broken.
CasingB
Valve
Chamber
Packing
CasingB
Valve
Chamber
Packing
CasingA