IWAKI EWN -B16 TC, Instruction Manual

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This section describes pump operation and programming.
Run the pump after pipework and wiring are completed.
Before operation
Check a flow rate, tubing and wiring. And then perform degassing and flow rate
adjustment before starting operation.
Points to be checked
Before operation, check if...
• Liquid level in a supply tank is enough.
• Tubing is securely connected and is free from leakage and clogging.
• Discharge/suction valves are opened.
• A power voltage is in the allowable range.
•
Electrical wiring is correct and is free from the risk of short circuit and electri-
cal leakage.
Retightening of pump head fixing bolts
Important
The pump head fixing bolts may loosen when plastic parts creep due to tem-
perature change in storage or in transit, and this can lead to leakage. Be sure
to retighten the bolts evenly to the specified tightening torque below in diagonal
order before starting operation.
Tightening torque
Model code Torque Bolts
EWN-B09/-B11/-B16/-B21 2.16 N•m M4 Hex. socket head bolt
EWN-B31 2.55 N•m M4 Hex. socket head bolt
EWN-C16/-C21 2.16 N•m M4 Hex. socket head bolt
EWN-C31 2.55 N•m M4 Hex. socket head bolt
EWN-C36 2.55 N•m M5 Hex. socket head bolt
*Tighten fixing bolts once every three months.
Operation
Before operation