FTS LYOSTAR 3, Руководство оператора

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Rev 006, 01/14 65
© SP Scientific 2014
Appendix
B
Appendix B: Troubleshooting
Troubleshooting Chart
Condition Possible Cause Recommended Corrective Action
Freeze-dryer starts hard ( i.e., difficulty
or rough starting). Makes chugging
noises at startup. Low voltage supply.
Check the voltage and amperage
supplied to the unit against the freeze-
dryer’s serial tag. If supply is low, contact
a certified electrician to evaluate.
The system will not respond to the
commands sent from the computer
Lyophilizer not powered on.
Check that the lyophilizer is plugged in
and the circuit breaker on the rear of the
system is switched on.
Data communications problem.
Check to ensure that the communication
cable is connected between the
computer and the freeze-dryer. Shut
down the computer and power off the
LyoStar. Restart the LyoStar™ 3 and the
computer.
Vacuum pump will not start.
No power to pump motor.
1) Vacuum pump motor circuit breaker
tripped.
2) Automatic control not in vacuum or
heat phase.
3) Check the power source in the
electrical box at the Solid State Relay or
Contactor. (See electrical schematic for
reference points.)
Power to motor OK, but pump will not
start.
Vacuum pump may be seized. Motor
should be removed (see vacuum pump
manual) and started without pump
attached. This will determine if the
problem is in the motor or the pump. If
the pump module is seized, it should be
rebuilt or replaced.
Vacuum pump runs, but unit has no
vacuum.
Condenser drain left open. Check plug in drain hose.
Door gaskets not sealing.
Close door latches snugly. A properly
sealed door should show a distinctive ¼ “
to ½ “ wide dark ring where the gasket
comes in contact with the acrylic door.
Accessory ports, valves or filters not
closed tightly.
Check all connections for integrity.
Water under the door gasket.
Remove door gasket and remove any
condensation that may be collected.
Door gasket should be dry and grease-
free on the inside.
Unit pulls vacuum but system pressure
does not register on display or other
vacuum gauges.
Defective probe.
Test with McLeod gauge or remote
vacuum gauge and replace the probe if
necessary.
Vacuum level not low enough to
register If pump has been running at least 30
minutes, test for vacuum leaks.