172-65318MA-04 (GP10/GT10/GP14/GT14 PowerTrap) 23 Nov 2018
11
•
The pressure setting on the pressure reducing valve should be between 0.05 and
0.15 MPa (7 – 20 psi, 0.5 – 1.5 bar) 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/reservoir.
•
For Open Systems
: If the GP exhaust line has to discharge to atmosphere, a
sound level of approximately 90 – 100dB (GP10) or 90 – 110dB (GP14) 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 condensate receiver, the sound level will be below 60dB.)
•
Make sure that the distance from the ground to the highest point on the exhaust
pipe (where it enters the receiver/reservoir) does not exceed 3 m (10 ft).
If it exceeds 3 m (10 ft) and steam is used as the motive medium, 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)
•
For Closed Systems only:
The exhaust pipe must be connected to the top of the
reservoir.
When the exhaust piping height exceeds 3 m (10 ft.)
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, CKF3MG) should be used; proper discharge
capacity cannot be guaranteed with other check valves.
Vent Line*
Equipment
Receiver/
Reservoir
Vent Line
Equipment
When the
exhaust
piping is
3 m (10 ft.)
or more
Power
Trap
Check
Valve
Pit
Outlet
Pipe
Inlet
Pipe
Outlet
Pipe
Inlet
Pipe
Power
Trap
Pit
Close to
Power
Trap
Pit
Pit
Exhaust
Piping
Receiver
Exhaust
Piping
Overflow
Pipe
Overflow
Pipe*
Pit
Steam
Trap
Close to
Power
Trap
When the
exhaust
piping is
3 m (10 ft.)
or more
Equipment
Receiver/
Reservoir
