172-65378MA-03 (GP10F PowerTrap) 23 Apr 2019
10
•
The pressure setting on the pressure reducing valve should be between 0.05 to
0.15 MPa (7 to 20 psi) higher than the back pressure.
When the discharge capacity of the PowerTrap is insufficient for the set motive
pressure, increase this set pressure even further.
(4) Exhaust Piping:
•
The exhaust pipe diameter should be at least 25 mm (1 in).
•
The exhaust pipe should be connected to the top of the receiver.
•
For open systems:
If the PowerTrap exhaust line has to discharge to
atmosphere, a sound level of approximately 90 to 100 dB may be emitted from the
exhaust pipe discharge outlet for two to three seconds. If soundproofing
measures are necessary, install a silencer. (If the exhaust line is connected to the
receiver, the sound level will be below 60 dB.)
•
Make sure that the distance from the ground to the highest point on the exhaust
pipe (where it enters the receiver) does not exceed 3 m (10 ft). If it exceeds 3 m
(10 ft), condensate must be drained from the exhaust pipe in order not to obstruct
the exhaust. Implement one of the following countermeasures: (See the figures
below.)
(a)
For Open Systems Only:
Add a float-type steam trap to the exhaust pipe at
a point just above where the exhaust pipe exits the unit body. (Figure 1)
(b)
For Open and Closed Systems:
Add piping connecting the exhaust pipe to
the pumped medium inlet pipe between the reservoir and the strainer, being
sure to install a check valve on the piping to prevent backflow of condensate
from the pumped medium inlet pipe to the exhaust pipe. (Figure 2)
When the exhaust piping height exceeds 3 m (10 ft.)
Vent Line
Equipment
When the
exhaust
piping is
3 m (10 ft.)
or more
Outlet
Pipe
Inlet
Pipe
Pit
Close to
Power
Trap
Pit
Pit
Exhaust
Piping
Receiver
Overflow
Pipe
Steam
Trap
Power
Trap
Vent Line*
Equipment
Receiver/
Reservoir
Check
Valve
Pit
Outlet
Pipe
Inlet
Pipe
Exhaust
Piping
Overflow
Pipe*
Pit
Close to
Power
Trap
When the
exhaust
piping is
3 m (10 ft.)
or more
Equipment
Receiver/
Reservoir
Power
Trap
Figure 1: Open Systems
Figure 2: Open & Closed Systems
* For Open Systems only
(5) Inlet and Outlet Piping
•
Install a 40-mesh or finer strainer on the PowerTrap pumped medium inlet pipe.
The installation should be in a location that allows sufficient space for
maintenance of the strainer.
•
Ensure that the inlet and outlet check valves are installed in the correct direction.
The check valve on the inlet pipe in particular should be installed right next to the
PowerTrap.
•
Only TLV check valves (CK3MG) should be used; proper discharge capacity
cannot be guaranteed with other check valves.
