172-65605M-14 (SQ2/SQ4/SQ6) 10 Dec 2019
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(3) Air pressure of the positioner for the steam control valve
(Unnecessary for the electric proportional control valve option.)
If the facility manager has indicated the acceptable pressure
range on the pressure gauge, check that the pressure is within
the range.
The set value of the pressure gauge is 0.38 MPaG, marked in
green on the upper part on the proper value scale.
(If the air pressure value has deviated from the set value, make
sure to correct the value.)
(4) Filter regulator for the steam control valve
Check and make sure that condensate is not accumulated
in the mist separator of the filter regulator. (Unnecessary
for the electric proportional control valve option.)
If condensate has accumulated, turn the plug at the bottom
of the separator in the open direction to drain the
condensate.
After draining the condensate, make sure to close the plug
by turning it in the closing direction.
NOTE: If using a mini air compressor to supply air,
make sure to drain condensate from the
compressor periodically.
(5) Valve opening of the steam control valve with
built-in separator (No. 10)
If the facility manager has indicated the
acceptable pressure range on the pressure
gauge, check that the pressure is within the range.
(6) Abnormal sounds/vibrations
Check for any sounds or vibrations from inside the unit, such as steam or
water flow, or sounds or vibrations from the circulating pump or valve
motors etc. that are clearly different from normal.
(7) Closing the condensate blow valve (No. 5)
Check to make sure that the valve is closed after
condensate blowdown is carried out. If the
condensate blow valve is not closed, it is dangerous
as steam will blow out when operation starts.
2. Periodic inspection
As a general rule, periodic inspection should be carried out once every two
years.
(1) For maintenance of the following components, refer to individual
instruction manuals.
Instruction manuals can be requested from TLV or accessed from the TLV
website.
a) PowerTrap (GT14L)
b) Steam inlet valve (bellows valve) (BE6H)
c) Steam control valve with built-in separator (and steam trap) (CV-COS)
d) Pressure reducing valve (DR20)
e) Check valve, steam trap, air vent for steam, ball valve
