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8 308703
Operation
Charging and Startup
For optimum performance, surge suppressors should be charged to a pressure 2 to 10 psi (0.01 to 0.07 MPa,
0.1 to 0.7 bar) lower than system pressure.
Automatic Models
CAUTION
Automatic surge suppressors must have the air
supply connected before you start pumping. Failure
to do so could result in the internal air valve
puncturing or rupturing the bladder.
The air pressure gauge (1) (See Parts Drawings on
pages 14 and 15) on automatic surge suppressors
remains at zero pressure even after the air line is
connected, because the surge suppressor only allows
air into the air chamber when it is required to dampen
pulsation. After the air supply line is attached to the
one-way check valve (8) and air is available, you can
start the pump. No further adjustments are necessary.
NOTE: Automatic surge suppressors are not recom-
mended for use as suction stabilizers at the pump inlet
or as a surge suppressor at a quick-closing valve.
Adjustable surge suppressors should be used for such
applications.
Manual Models
CAUTION
Manual surge suppressors must be charged before
you start pumping. Failure to do so could result in
the internal air valve puncturing or rupturing the
bladder.
Before you start the pump, charge the surge suppres-
sor with air line pressure.
1. Start the pump to generate system pressure.
2. As pressure increases to approach working pres-
sure, gradually decrease the regulated air supply
pressure into the surge suppressor by adjusting
the regulator (4) (See Parts Drawings on pages
14 and 15).
3. Wait for up to one minute to allow the system to
respond to the adjustment before you make any
further adjustments. Generally, pulsation is most
effectively minimized when the air supply to the
surge suppressor is regulated to 2 to 10 psi (0.01
to 0.07 MPa, 0.1 to 0.7 bar) lower than system
pressure.