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EPDT-241
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8
Trouble
Cause
Remedy
Blows at pressure
lower than the set
pressure.
1. Product specifications are not
consistent with usage condition.
1. Check the set pressure indication on the
name plate [20]. If the product is not
suitable for the usage condition, replace it
with a proper one.
2. Pressure gauge is out of order.
2. Calibrate the pressure gauge or replace it
with a new one.
3. The product does not keep the
accuracy of its set pressure.
3. The set pressure needs to be readjusted.
Please contact us for repair at our factory.
Does not operate
at the set pressure.
1. Product specifications are not
consistent with usage condition.
1. Check the set pressure indication on the
name plate [20]. If the product is not
suitable for the usage condition, replace it
with a proper one.
2. Pressure gauge is out of order.
2. Calibrate the pressure gauge or replace it
with a new one.
3. Sliding portions of the valve [5] and
valve seat [4] does not move
smoothly
3. The product needs to be disassembled
and cleaned. Please contact us.
4. There is a back pressure at the
piping of the product outlet.
4. Remove the back pressure. In addition,
change the piping layout not to allow
back pressure.
5. The product does not keep the
accuracy of its set pressure.
5. Please contact us for repair at our factory.
Does not stop blowing. 1. Scale stuck on contact surface
between valve [5] and valve seat
[4].
1. Follow the procedure described in 7.2.2. and
start up the product to remove the scale.
Please contact us for repair at our factory if
the trouble does not stop.
2. Sliding portions of the valve [5] and
valve seat [4] does not move
smoothly.
2. The product needs to be disassembled
and cleaned. Please contact us for repair
at our factory.
3. The normal working pressure
exceeds the closing pressure.
3. Increase the difference between the
set pressure and normal working
pressure. To readjust the set pressure,
the product is readjusted at our factory.
4. The product is installed at outlet
side of the pressure reducing
valve which is out of order, and the
reduced pressure of the valve is
getting higher than expected.
4. The pressure reducing valve needs to be
repaired. If it is Yoshitake product, please
contact us.
