33
Ope
ra
tio
n
Before operation
■
Use of hexagon wrench instead of a torque wrench
Tighten the
fi
xing bolts with the straight long part of a hexagon wrench (a) and
further turn the bolts clockwise 90 degrees with the short part (b).
Degassing
The gas needs to be expelled from the pump and tubing by degassing. Normal
operation can not be obtained with gas in the pump. Perform degassing in the
following cases.
• When the pump starts to run for the
fi
rst time
• When the
fl
ow rate is too low
• After liquid is replaced in the supply tank
• After a long period of stoppage
• After maintenance and inspection
NOTE
• Both gas and chemical come out together through air bleed tube. Place the end of the
tube in the supply tank or another container.
• Some chemicals may cause skin trouble or damage component parts. When your
hand or component parts get wet with chemical liquid, wipe off immediately.
90
°
Straight long
part
Short part
a
b
Summary of Contents for EHN-R
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