CHART TRIFECTA 2K, Service Manual

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Trifecta 2K
N
OTE
: The time listed above is typical, but not exact. Time will vary and is effected by
distance of T
RIFECTA
from bulk tank, condition of the liquid in the bulk tank, bulk tank
pressure and ambient conditions.
M
ANUAL
M
ODE
If power is lost to the system, all of the solenoid valves will close. To run the system,
manually operate the solenoid valves by turning the valve handle on the bottom of the valve to
provide flow as required. The operator will have to pick a tank to use and open its gas use and
pressure building valve. It is important to note that when the system is running in manual mode,
the pressure-building valve on the Laser-Cyl will need to be opened and monitored. If the loss
of power continues and a tank needs to be filled, the operator will need to close the previous
tank’s gas use and pressure building valves, and open the other tank’s gas use and pressure
building valves. To fill the tank, the operator needs to control the vent of the Laser-Cyl to
remain below the pressure of the bulk tank by operating the vent to atmosphere valve. When the
pressure is lower than the bulk tank, liquid will flow into the tank through the check valve. The
Laser-Cyls should be filled to 27 inches (68.6 cm) of water as shown on the liquid level gauges.
The manual by-pass feature of the solenoids is operated such that turning the valve handle
in (closer to the valve body) will open the valve and allow flow. Turning the valve handle out
(away from the valve body) will close the valve and stop flow.
✦
NOTE: It is EXTREMELY important that if the system is run in manual
mode, the pressure-building valve not be opened and left unattended. The
pressure building circuit does not have any regulators or control devices. If
the valve is left open, rapid, uncontrolled pressure rise may occur. Since
there is no power, the PLC controller will not be available to control the
pressure. The Laser-Cyl relief valve and rupture disk will potentially open
to relieve the pressure. The system should only be operated this way for
brief periods of time until power can be restored. While operating this in
this mode, someone should closely monitor the pressure of the tank and
close the pressure building valve if the pressure rises more than desired.
Operation Time
Vent to Bulk Tank 1 min
Vent to Atmosphere 1 min
Liquid Filling 5 min
Repressurization 3 min
Totals 10 min
T
ABLE
2 - Typical T
RIFECTA
Fill Cycle Time
15