Calibration; Ac Power Interruption - Walchem EW-F series Instruction Manual

3.7

Calibration

Figure 8 Calibration
3.8

AC Power Interruption

If AC power is interrupted, the pump will power up as shown below:
State preceding power OFF
WAIT
Run Manual
Run external
If exact output calibration is required, first prime and adjust
the pump as above. Then connect a calibration column to the
suction side of the pump. Turn the pump on for one minute
and read the amount of liquid pumped from the column.
Adjust the frequency up or down as necessary and check the
output again. When the desired output is reached, disconnect
the calibration column and reconnect the suction tubing. (See
Figure 8.) Calibration must be performed with actual
application equivalent back pressure for accurate results.
Published flow rates are based on maximum pressures. Lower
pressures may result in slightly higher flow rates.
State following power ON
WAIT
Run Manual
Run external
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