59
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Inspection
Error messages
Take measures below when any of the error messages appears during operation. Contact us
or your nearest distributor as necessary.
Error messages
Possible causes
Measures
Pressure overload protection is
active.
•
Check a discharge line for clogging and re
-
move it as necessary. If this error happens dur
-
ing the transfer of high viscosity liquid, make a
discharge line I.D. wider and its length shorter.
Diaphragm is broken.
•
Replace the broken diaphragm with new one.
See page 63 for detail.
Failed rotation control is de
-
tected.
•
If this error state is removed by pushing the
start/stop key, a possible cause is an instanta
-
neous surge of discharge line pressure
. In-
spect/solve the problem and then restart.
•
If not, failure of a motor rotation detector is pos
-
sible. Contact us or your nearest distributor.
Inspection
Perform daily and periodic inspection to keep the best pump performance and safety.
Daily inspection
Check the following points. If you notice any abnormal or dangerous conditions, suspend operation
immediately and inspect/solve problems. See the "Troubleshooting" section as necessary.
When wear parts come to the life limit, replace them with new ones. Contact your distributor for detail.
No.
States
Points to be checked
How to check
1
Pumping
• If liquid is pumped.
Flow meter, pressure
gauge or visual inspection
• If discharge pressure is normal.
Pressure gauge
•
If liquid is deteriorated, crystallized or settled.
Visual or audio inspection
2
Noise and vibration
•
If abnormal noise or vibration occurs. They are
signs of abnormal operation.
Visual or audio inspection
3
Air ingress from the
pump head joints and
the suction line
• If leakage occurs.
•
If pumped liquid includes air bubbles, check lines
for leakage and retighten as necessary.
Visual or audio inspection
Periodic inspection
Retighten the pump head mounting bolts evenly to the following torque in diagonal order.
*
Mounting bolts may loosen in operation. How fast the bolts start to loosen is depending on operating conditions.
Tightening torque
Model code
Torque
Bolts
Number of bolts
IX-D150/-D300
12 N•m
M8 hexagon head bolt
6
