28
Disassembly
1. Disassemble only after thoroughly decontaminating the pump by flushing and cleaning the
piping and the inside of the pump.
Warning
Wear protection (goggles, rubber gloves, etc.).
Certain liquids are dangerous and may hurt your eyes and skin.
2. Remove the discharge and suction piping.
Caution
Close the suction valve and discharge valve fully,
prior to removing the discharge and suction piping.
Valve
1. Remove the suction and discharge fitting by
loosening the nut (50).
Remove the adapter (6) if any, and take out the
valve (2), valve guide (3), valve seat (4), valve
gasket (5) and O-ring (7). If the pump head is
made of stainless steel, the valve assembly can
be taken out by loosening the setting flange (54)
or the nuts (81).
2. Check the valve and valve seat. If they are damaged
or worn, replace with a new ones. It is highly
recommended to replace the gasket and O-ring
every time the liquid end is disassembled.
Diaphragm
1.
Loosen the hex head or socket head cap bolts (20).
2. Remove the pump head (1).
3. Connect power supply and run the motor
temporarily (without the liquid end).
Set stroke length to 100%. Turn off when the
diaphragm comes to the top dead center (when
the diaphragm is most extended).
Disconnect power supply.
Caution
Do not touch any moving parts during operation
.
4. Remove the diaphragm from the pump shaft by turning the diaphragm counterclockwise with
hand. If it is worn or deformed part in any way, replace it with a new one
Spanner
Hex head bolt (20)
