CHART Trifecta XPro Series, Руководство по эксплуатации продукта

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41 Service Product Manual - Trifecta
®
XPro Series
Solenoids
If the solenoid appears to be malfunctioning, it could be for
a few reasons:
• PLC is not sending signal to energize the solenoid
• Contaminants on solenoid seat
• Moisture in solenoid
• Solenoid failure
The most common symptoms of these failures and their
remedies are described in the following sections:
Non-Energizing Solenoid
The PLC sends a signal to the solenoid to energize the coil
during a particular operation of the Trifecta XPro Series
When this signal is sent from the PLC, an LED on the front
panel lights up If the LED lights up but the solenoid is not
energized and does not open, check for loose wiring and
voltage at the valve with a multi-meter If there is power at
the valve and the valve does not open, the coil will need to
be replaced Contact www chartparts com for replacement
parts
Contaminants on Solenoid Seat
If the solenoid appears to be leaking, there are lost likely
contaminants on the seat of the piston The seat or piston
may also be damaged. In this case, remove the piston and
replace Also verify that the strainer is in place and replace if
it has been six months prior to last replacement
Moisture in Solenoid
Solenoid should be allowed to thaw. Once thawed, moisture
may be removed from solenoid upon next use via the flow of
new gas
Solenoid Failure
If none of the above improves the situation, there has been
a catastophic failure within the solenoid coil The entire
solenoid must be replaced
Leaking Components
If the leak cannot be fixed via tightening or re-plumbing a
component, a new component will have to be fitted. Refer to
the Preventive Maintenance section of this manual to locate
the description and part number of this component
Note: All replacement fittings should be cleaned
for oxygen service. Refer to replacement
part section for Chart part numbers for all
plumbing components.
Pressure and Liquid Level
Transmitters
1 Leak check all fittings associated with the transmitter
to verify the circuit has zero leaks The sensor error
check function is designed to find problems such as a
wire coming disconnected, or a short in the transmitter.
“F6” will display in the error code section of the PLC if
a pressure or liquid level transmitter is out of range See
the Service section of this manual for Error Codes
2 Confirm that all wiring connection terminals are tight.
3 If all connections are made and the error condition does
not go away, check the transmitter output.
4 Recalibrate or replace the transmitter as necessary
5 Also verify display versus the analog gauges for both
pressure, readouts and differential pressure.
Ball Valve Repair (Trifecta XPro
Series - 600 psig only)
Early versions of the 600 psig Trifecta XPro Series used
cryogenically rated ball valves in place of solenoid valves
Chart recommends that these ball valves have their stem
seals checked and tightened at least every six months Ball
seals and actuator seals should also be checked and replaced
at least once per year