172-65473MA-03 (GT5C PowerTrap) 17 Jul 2019
15
Operation and Periodic Inspection
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.
At the start-up of operation, large quantities of condensate may flow,
causing the PowerTrap to momentarily overload. Open the inlet valve
gradually so that the condensate flows in slowly.
WARNING
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.
CAUTION
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.
CAUTION
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.
CAUTION
Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
Operation
(1) Valve Operation
During the first operation after installation, or re-operation after a long shutdown,
open blowdown valve [Vb] (ensuring that the area around the opening is safe) to
eliminate rust and scale completely. Refer to the
“Steam System Example” drawings
in the
“Installation” section 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 condensate 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.
e) During normal trapping operation (equipment side pressure > back pressure), the
GT5C discharges condensate continuously. During stall or reverse pressure
(equipment side pressure
≤ back pressure), the GT5C switches to pumping
operation. The PowerTrap is normal if it operates intermittently during pumping
operation; first exhausting the motive medium to fill with pumped medium, then
taking in motive medium to force the condensate out.
The interval of operation will vary greatly depending on the amount of pumped
medium inflow, the temperature, the motive medium (steam) pressure. (The
interval of operation is considered the length of time between the start of one
discharge cycle and the start of the next discharge cycle.)
