IWAKI PUMPS APN-450, Instruction Manual

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1. Before operation
1. Before pump operation, check that each tube connection is secured.
2. Check that a suction line is connected to the inlet and a discharge line to the outlet.
CAUTION
If a suction line and a discharge line are connected the other way around, pumping process
is inverted.
3. Check that the pump is firmly fixed on a mounting position.
2. Pump operation
Operate the pump according to the following steps.
No. Procedure Contents
1 Check tubing, wiring and voltage.
● See "■ Tubing" and "■ Electrical wiring" sections.
● Check the spec label to see if power supply voltage is correct.
2 Open valves. ● Fully open both discharge and suction lines.
3 Supply power to the pump.
● Check the item 1 and 2. Then turn on power and start the
pump.
● Smooth starting may not be obtained when ambient tempera-
ture is 10ºC or below. In this case, run the pump with no dis-
charge line pressure for a few minutes to warm it up.
4 Adjust air flow.
● After the pump has reached a specified stroke rate, initiate full
scale operation.
● Always adjust an air flow by the suction valve.
5 Points to be checked during operation
● After starting, check a pressure gauge to see if suction and
discharge line pressure are correct and an air flow meter to
see if the specified air flow is obtained.
● Always adjust air flow by a suction valve.
● Keep a suction line pressure at or below atmospheric pres-
sure.
● In case electric power has failed while the pump is running,
switch off main power. Otherwise, the motor may not restart
or may burn out depending on a line pressure at the time of
power recovery.
■ Stop and storage
● Before a long period of stop (1 week or more)...
Depressurize the system and stop air/gas supply.
Some liquids may harden or crystallize when they are left for a long time. In this case clean wet ends
before resuming operation.
● Do not store the pump in the following places where...
1. Ambient temperature exceeds 40°C or falls below 0°C.
2. Under a flammable/corrosive atmosphere or in a dusty/humid place.
3. Under vibration or wind & rain.
Operation