172-65318MA-04 (GP10/GT10/GP14/GT14 PowerTrap) 23 Nov 2018
38
Category
Cause
Corrective Measure
E.
Faulty
PowerTrap
1. Dirt or scale is
caught in the
motive medium
intake valve or the
valve is worn
2. Dirt or scale is
caught in the
exhaust valve or
the valve is worn
3. The snap-action
unit is obstructed
by dirt or scale or
its operation is
otherwise faulty
4. The lever unit is
obstructed by dirt
or scale or its
operation is
otherwise faulty
5. The float is broken
6. Dirt or scale is
caught in the
GT10/ GT14 main
valve (steam trap)
unit, resulting in
faulty valve
opening/closing
- The PowerTrap does not operate for long periods of
time, in spite of the fact that pumped medium has
collected in the receiver/reservoir; if there is no sound
at all of the operating medium flowing in the motive
medium intake valve and the exhaust valve, it is
possible that the PowerTrap is faulty
Note, however, that this phenomenon will also occur
when the motive medium pressure is less than the
back pressure
- If the PowerTrap does not operate for long periods of
time and the sound of the operating medium can be
heard continuously in the motive medium supply pipe,
the PowerTrap is faulty
Disassemble the PowerTrap, and inspect the following
items:
(1) Raise and lower the float and check to make sure
the snap-action unit operates properly
(2) Check the motive medium intake and exhaust
valves to make sure there is no dirt or scale
caught or any other abnormality
(3) Check other possible factors that might hinder
operation
After performing the above inspection, repair any
defects discovered or replace the PowerTrap
F.
Faulty
check valve
1. Dirt or scale is
caught in the
pumped medium
inlet check valve or
the valve is worn or
getting hung up
- The operating medium that has been supplied is
leaking from the inlet check valve, preventing the
pressure inside the trap from increasing; as a result,
the pumped medium is not discharged
Disassembly and inspection is required
2. Dirt or scale is
caught in the
pumped medium
outlet check valve
or the valve is worn
or getting hung up
- The discharged pumped medium has flowed back
into the PowerTrap, causing the interval at which the
unit operates to grow shorter and reducing its
discharge capacity
Disassembly and inspection is required
3. The pumped
medium inlet or
outlet check valves
have been installed
in the wrong
direction
- Correct the installation so that the check valve is
facing the right way to allow the desired flow of
pumped medium
4. The pumped
medium inlet or
outlet check valves
are too small
- The pumped medium flow capacity is insufficient
Use a larger size
G.
There is a
problem
with other
equipment
1. A large quantity of
steam is flowing
into the receiver/
reservoir
- When a large quantity of steam is discharged from
the exhaust pipe or vent pipe, it may be because
steam from a blowing steam trap or an open valve
has flowed into the pumped medium inflow pipe
system of the receiver/reservoir; check these traps
and the valves on the pumped medium inflow pipe
system
