4
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EPDT-299a
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4.1 Warning and caution for use
5.1 Troubleshooting
Trouble
Cause
Remedy
Pointer does not
work.
1. Pressure is not applied
1. Apply pressure.
2. Piping is clogged by foreign
substance.
2. Remove foreign substance.
Accidental error is
large.
1. Fluid exceeds usable temperature
range.
1. Lower temperature.
2. Head difference due to difference
of height.
2. Correct the head.
3. Abrasion of internal structure due
to heavy vibration or pressure
fluctuation.
3. Replace with new one.
Response is slow.
1. Too much tightening of dampener.
1. Make appropriate tightening.
2. Piping is too thin for viscosity of
fluid.
2. Make the piping thick.
Pointer does not point
zero when the
product is removed
from piping.
1. Deformation of bourdon tube due to
over pressure.
1. Replace with new one.
2. Clogging of foreign substance in
fluid.
2. Remove foreign substance.
3. Abrasion of internal structure due to
heavy vibration or pressure
fluctuation.
3. Replace with new one.
Off the scale
1. Deformation of bourdon tube due to
over pressure.
1. Replace with new one.
2. Gap of pointer and deformation of
bourdon tube due to impact.
2. Replace with new one.
4. Operation
Warning
1. Do not apply pressure more than maximum pressure to the product.
* If bourdon tube is broken, it may lead to injury or damage to the surroundings.
2. Use the product within usable temperature range.
* If using the product out of usable temperature range, the product may be broken and lead to injury
of damage to the surroundings
3. Do not use the product for the fluid with corrosive property for the wetted part material of the product.
* If bourdon tube is broken due to corrosion, it may lead to human injury or damages to the
surroundings.
Caution
1. Make using pressure be in the range of 25 – 75 % of maximum scale.
2. Do not disassemble the product.
* It will cause product malfunction.
5. Maintenance and inspection