172-65318MA-04 (GP10/GT10/GP14/GT14 PowerTrap) 23 Nov 2018
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e) The PowerTrap is normal if it operates intermittently; first exhausting the motive
medium to fill with pumped medium, then taking in motive medium to force the
pumped medium out.
•
The interval of operation will vary greatly depending on the amount of pumped
medium inflow, the temperature, the motive medium (steam or gas) and the
motive pressure. (The interval of operation is considered to be the length of time
between the start of one discharge cycle and the start of the next discharge
cycle.)
The interval of operation Tc (s) can be roughly determined using the following
formula:
Tc=108,000/Q or Tc=238,000/Qp
Q: amount of condensate (inflowing pumped medium) (kg/h)
Qp: amount of condensate (inflowing pumped medium) (lb/h)
•
The GP10/GT10/GP14/GT14 can discharge approximately 30 liters (8 U.S. gal)
of pumped medium for each discharge operation.
The amount of time required for each discharge operation will be between 3 and
30 seconds, depending on the back pressure and the motive medium pressure.
(2) If an error such as a leak or water hammer occurs after beginning PowerTrap
operation, shut off the valves immediately in the following order:
valve [Vm] on motive medium supply pipe
→
pumped medium inlet valve [Vi]
→
pumped medium outlet valve [Vo]
→
valve [Ve] on exhaust pipe
(3)
Whenever any type of malfunction is suspected in the PowerTrap, refer to the
“Troubleshooting” section on pages 34 - 38.
Periodic Inspection and Diagnosis
There are two types of periodic inspection: the visual inspection and the disassembly
inspection.
(1) Visual Inspection
•
As a general rule, this inspection should be performed at least once every 3 months.
•
Check the following items:
a) There should be no leakage from the PowerTrap or from any of the connections.
b) The PowerTrap unit should be operating cyclically (one indication being the
sharp, mechanical sound of the snap-unit operating at the transition between the
filling and the discharge parts of the cycle). Immediately after the end of the
discharge part of the cycle and during the filling part of the cycle, the sound of
flow in the exhaust pipe should be heard. During the pumping (discharge) part of
the cycle, flow in the motive medium supply pipe should be heard.
c) Pumped medium should not accumulate in the (steam-using) equipment, and
the temperature of the equipment should not be abnormally low.
d) For open systems, verify that an overflow pipe from the receiver is installed.
e) For open systems, no steam should be seen flowing out through the vent pipe.
f) There should not be any abnormal noise from the pumped medium outlet pipe or
the pumped medium recovery line when the PowerTrap operates.
