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Inspection
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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
The pressure overload protec-
tion is active.
• Check a discharge line for clogging and re-
move it as necessary. If this error happens dur-
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discharge line I.D. wider and its length shorter.
The diaphragm unit is broken.
• Replace the broken diaphragm set with the new
one. See page 67 for detail.
Rotation control is failed.
• 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, the failure of a motor rotation detector is
possible. Contact us or your nearest distributor.
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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 us or your distributor for detail.
No.
States
Points to be checked
How to check
1
Pumping
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Flow meter, pressure
gauge or visual inspection
• If discharge pressure is normal.
Pressure gauge
•
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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
Entrained air from the
pump head joints and
the suction line
• If leakage occurs.
•
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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.
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Model code
7RUTXH
Bolts
Number of bolts
IX-B007/-B015/-B030/-B045
3 N•m
M5 hexagon head bolt
4
shows up
in turn
