9
Discharging Of Pressurized Equipment
The pump and equipment are under pressure until pressure in the pump is relieved. While the
pump is at this stage, the user may be damaged from material to be sprayed, poured or splashed
accidentally from the pump or equipment. Apply pressure relief procedure to decrease damage
and risks that may be occurred.
Situations when pressure relief procedure is applied:
• When you should relief pressure.
• When you stop the pump.
• When you control, clean or maintain any system equipment.
Manometer and valves are placed to inlet and outlet line to determine pressure values that
may occur in inlet and outlet of the pump and to be able to make ow adjustments. When one
valve or both valves are closed, the pump does not operate. When both valves are opened, the
diaphragm pump continues to operate. The diaphragm pump is not damaged in the meantime.
Pressurized air is needed so that diaphragm pump operates. Air inlet hose should have the same
diameter with air inlet line so that the pump operated with full capacity. It is recommended by
the manufacturer company to place conditioner before the air inlet line. The conditioner controls
pressure adjustments and lubricates air diverter valve. Fluid ow rate is adjusted by controlling
air ow with valve to be placed before the air inlet line.
Subjects to be considered while installing the diaphragm pump;
• The diaphragm pump should be close to uid to be transferred as much as possible.
• Suction line length and elbow number in the suction line should be kept minimum as much as
possible.
• Inlet - outlet dimension of the diaphragm pump should not be different from connection size in
a place where installation was made.
• Pipe connections should be made exible in a place where the diaphragm pump was installed.
• If the pump does not pull when it is operated, it means cavitation occurred.
• Cavitation causes that diaphragm life becomes shorter. Control suction height.
• Do not operate the pump fast, control suction line diameter. They may cause cavitation.
• Control all threaded connections and air connections against leakage and leaks during rst
commissioning of the pump. If there is any leak, its entering in inammable, explosive or acidic
uid environment may constitute risk.
• Damping tanks should be used to prevent knocking in the pipe line in long push distances.
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