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SB-6-HGBR-R1 (3/2018)6 / 6www.carlisleft.com
REPLACEMENT OF PARTS
SERVICE CHECKS
DEFECTS CAUSES CORRECTION
Fluid pressure increases above
initial setting.
Obstruction in the return line. Clean the fluid line.
Obstruction in the regulator. Clean or replace valve.
Too little material being used at spray
stations for pressure setting on valve
Reset pressure at valve under maxi flow conditions
at spray stations.
Return line undersized for volume of
material being pumped.
Re-size line or reduce volume of material being
pumped.
Back pressure reduces below
initial setting.
Too much material being used at spray
stations for pressure setting on valve.
Reset pressure at valve under maximum flow
conditions at spray stations
No material being supplied because of
pump failure at supply point.
Repair or replace pump as necessary.
Leakage from vent hole in cap
Broken or punctured diaphragm. Replace.
Leakage from gasket at
perimeter of valve body.
Loose cap screw Tighten screws evenly.
TO SERVICE VALVE ASSEMBLY (Rep. 12)
1. Unscrew the fluid outlet valve from the regulator body.
2. Clean and check the valve and washer HGBR-78 (Rep.9).
If the parts are damaged, replace in using the valve kit HGBR-426.
3. Screw the valve body on the regulator body with a sealing
compound “loctite 222”. Apply a maximum torque 6.4Nm.
TO REPLACE DIAPHRAGM (Rep. 7)
1. Unscrew the 6 hex. head cap screws.
2. Clean with an adequate solvent and check all the surfaces
which are in contact with the membrane.
3. The diaphragm is sold complete with its washer and its fluid
flow plastic deflector.
These parts could be not separated, if diaphragm or the deflector
is damaged replace it.
4. Install the new diaphragm kit HGBR-422 into the regulator
body.
5. Put the cover on the regulator and screw the 6 screws at 7.5
to 8 mN.
Before dismantling valve switch off the material pump and relieve pressure in the system.
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