Operation and Periodic Inspection
WARNING
CAUTION
CAUTION
CAUTION
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve opening/closing
should be carried out only by trained maintenance personnel.
Operation
(1) Valve Operation
Refer to the drawings in "Installation" on pages 8 and 9 to become familiar with the symbols
used for the various valves.
If water hammer has occurred, immediately cease operation and close any valves that
are operating.
a) Slowly open the valve [Ve] on the exhaust pipe.
b) Slowly open the valve [Vm] on the motive medium supply pipe.
Make sure that there is no sound of flow from the exhaust pipe [Se] or the pumped medium
inlet pipe [Si].
c) Slowly open the valve [Vo] on the pumped medium outlet pipe.
d) Slowly open the valve [Vi] on the pumped medium inlet pipe.
When using a manual valve [Va] for venting air on a closed system, leave the valve [Va] slightly
open until the PowerTrap has cycled 2 or 3 times in order to release any air inside the system,
then close the valve [Va].
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
Q: amount of condensate (inflowing pumped medium) (kg/h)
Qp: amount of condensate (inflowing pumped medium) (lb/h)
・ After all piping work has been completed in accordance with the
specific piping system designed when the decision to utilize the
PowerTrap was made, check once again to make sure that all pipe
connections have been tightened, gaskets have been inserted where
needed and all parts are securely installed.
・ When beginning operation, make sure that the operator stays well clear
of the release area of the vent line and overflow piping.
At the start-up of operation, large quantities of condensate may flow,
causing the PowerTrap to momentarily overload. If this occurs in open
systems, hot condensate may spurt from the vent piping or overflow
piping and could result in burns, other injuries or damage to equipment.
Install properly and DO NOT use this product outside the recommended
operating pressure, temperature and other specification ranges.
Improper use may result in such hazards as damage to the product or
malfunctions which may lead to serious accidents. Local regulations may
restrict the use of this product to below the conditions quoted.
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the product
when it is hot or under pressure may lead to discharge of fluids, causing
burns, other injuries or damage.
Be sure to use only the recommended components when repairing the
product, and NEVER attempt to modify the product in any way. Failure to
observe these precautions may result in damage to the product or burns
or other injury due to malfunction or the discharge of fluids.
or
— 19 —
Tc = 238,000/Qp