172-65605M-14 (SQ2/SQ4/SQ6) 10 Dec 2019
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Operation Procedure
Start-up
When operating the unit after a prolonged period of no operation, initial blowdown
should be conducted on the steam and water piping preceding the unit.
Initial blowdown refers to the removal of residual condensate from steam piping
and rusty water from water piping.
If blowdown is not conducted, problems such as water hammer in the steam piping
and red water discharge in the water piping may occur. For details, refer to the
"Commissioning" section in the "Installation/Commissioning" chapter.
To operate the unit, perform 1. and 2. described below.
Refer to the "Configuration (Component Name and Function)" section for the
names of components.
1. Prior confirmation
(1) Make sure that the condensate blowdown valve (No.
5) on the PowerTrap unit is closed.
In cold climates, valves may be mistakenly left open
after condensate removal, in order to prevent
freezing.
Mistakenly leaving the valve open is dangerous, as
steam or condensate may be discharged during
operation start-up.
(2) Make sure that the power supply indicator on the
control panel is lit and the power is supplied to the
control panel.
When the power supply indicator is not lit, power may
not be supplied to the control panel. Contact an
electrician.
(Electrical layouts of the control panel shown in the right picture may differ
from the actual layout.)
(3) Make sure that the operational status is STOP.
(4) Make sure that the steam is supplied up until the
steam inlet valve and the steam pressure does not
exceed 0.6 MPaG which is the maximum operating
pressure for the unit.
(5) Make sure that the air pressure specified below
is supplied to the positioner of the steam control
valve with condensate separator (No. 10).
When the air pressure has not reached the
specified value, set the pressure to the
specified value by turning the regulator handle.
(Set pressure: 0.38 MPaG)
For the electric proportional control valve, there
is no air regulator, therefore this step is
unnecessary.
When adjusting the
air pressure, lift up
the regulator handle
until the orange
sticker is visible,
then turn the handle.
