Operation and Maintenance
Operating the Surge Suppressor
1.Be sure the system is properly grounded. Read and follow FIRE AND EXPLOSION HAZARD, on page 3.
2.Check all fittings to be sure they are tight. Be sure to use a compatible liquid thread sealant on all male threads, and do not overtighten the fittings into the pump.
3.Check that the muffler or air exhaust line is securely connected to the air exhaust port on the top of the housing.
WARNING
Never operate the surge suppressor without the muffler or an air exhaust line installed in the air exhaust port. If the air exhaust port is left open and the diaphragm shaft works loose from the bolt, the shaft could be propelled out of the housing, caus- ing injury.
4.Start the pump as explained in your separate pump manual. In systems using a 1:1 ratio pump, the air pressure supplied to the suppressor will be the same as that supplied to the pump.
5.Allow the pump to cycle slowly until all air is pushed out of the surge suppressor and lines, and the pump is primed. The system is now ready for normal operation.
NOTES:
When using a pump with a ratio greater than 1:1, the air pressure supplied to the surge suppressor and the air pressure supplied to the pump must be at the same ratio as the pump to prevent overpressurization of the surge suppressor. See the following examples.
DIn a system using a 2:1 ratio pump, air pressure supplied to the surge suppressor should be twice
as high as air pressure to the pump. If the air pressure supplied to the pump is 50 psi (0.34 MPa,
3.4bar), you should supply 100 psi (0.7 MPa, 7 bar) air pressure to the surge suppressor.
DIn a system using a 4:1 ratio pump, air pressure supplied to the surge suppressor should be four times as high as air pressure to the pump. If the air pressure supplied to the pump is 25 psi
(0.17 MPa, 1.7 bar), you should supply 100 psi
(0.7 MPa, 7 bar) air pressure to the surge suppressor.
WARNING
To prevent overpressurization of the surge sup- pressor, never exceed 100 psi (0.7 MPa, 7 bar) fluid inlet pressure or 100 psi (0.7 MPa, 7 bar) air inlet pressure. In systems using pumps with a ratio greater than 1:1, reduce the air inlet pressure to the pump as necessary to keep the fluid and air inlet pressures to the surge suppressor within these limits.
CAUTION
In systems using pumps with a ratio greater than 1:1, fluid may escape into the surge suppressor air line and contaminate the air supply if the diaphragm fails. Installation of a check valve in the air line will prevent fluid contamination of the air line.
Flushing the System
Flush the system regularly, using a compatible solvent. Do not allow fluid to dry in the pump or surge suppressor. Always flush the pump and surge suppressor before storing them for any length of time.
Place the pump suction tube in the solvent container. Run the pump long enough to thoroughly clean it, the surge suppressor, hoses, and any guns or valves used in the system. Close the pump air regulator. Remove the suction hose from the solvent.
Shutdown
Remove the suction hose from the fluid container and run the pump until the fluid is forced out of the system. Then shut off the air supply immediately.
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