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EPDT-193d
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8
Trouble
Cause
Remedy
Blows at a pressure
lower than the set
pressure.
3. Damage on the O ring [5] or on the
contact surface of valve seat [2].
3. The product needs to be disassembled
and its parts need to be replaced.
Please contact us.
4. The product does not keep the
accuracy of its set pressure.
4. The set pressure needs to be readjusted.
For AL-150TR, readjust the set pressure
by handle (See 8.4). For the other models,
please contact us.
Does not operate
at the set pressure.
1. The product specifications are not
consistent with the use condition.
1. Check the set pressure indication on the
name plate. If the product is not suitable
for the usage condition, replace it with a
proper one.
2. The pressure gauge is out of
order.
2. Calibrate the pressure gauge or replace it
with a new one.
3. Sliding parts of the valve [3] and
valve seat [2] do not move smoothly.
3. The product needs to be disassembled
and cleaned. Please contact us for repair.
4. There is a back pressure at the piping
of the product outlet.
4. Remove the back pressure. Change the
piping layout not to allow the back
pressure exist.
5. The product does not keep the
accuracy of its set pressure.
5. The set pressure needs to be readjusted.
For AL-150TR, readjust the set pressure
by handle (See 8.4). For the other
models, please contact us.
Does not stop blowing.
1. Foreign substance or scale stuck
on contact surface between the
valve [3] and valve seat [2].
1. The product needs to be disassembled
and cleaned. Please contact us.
2. Sliding parts of the valve [3] and
valve seat [2] do not move smoothly.
2. The product needs to be disassembled
and cleaned. Please contact us.
3. The normal working pressure
exceeds the closing pressure.
3. Increase the difference between the
set pressure and normal working
pressure. If the set pressure needs to
be readjusted, please contact us.
4. The product is installed at outlet
side of 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’s product,
please contact us.
The lever [19] does
not lift up.
<AL-150TML>
<AL-140TML>
1. The pressure difference between
the set pressure and the inlet
pressure is large.
1. Make the
differential pressure between
the set and inlet pressures within the
range of table 1.
2. Sliding parts of the valve [3] and
valve seat [2] do not move
smoothly.
2. The product needs to be disassembled
and cleaned. Please contact us.
Does not stop blowing
after lifting and letting
go the lever [19].
< AL-150 TML >
<AL-140 TML >
1. Foreign substance or scale stuck
on contact surface between the
valve [3] and valve seat [2].
1. Lift up the lever again to eliminate scale.
Please contact us for repair if the trouble
does not stop.
2. Sliding parts of the valve [3] and
valve seat [2] do not move
smoothly.
2. The product needs to be disassembled
and cleaned. Please contact us.
Leakage from
between the cap [13]
and the O ring [22].
<AL-150TR>
< AL-150 TML >
<AL-140 TML >
1. Damage on the O ring [22].
1. The product needs to be disassembled
and its parts need to be replaced.
Please contact us.
