FTS LYOSTAR 3, Руководство оператора

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Appendix B: Troubleshooting FTS Systems LyoStar™ 3
68 Rev 006, 01/14
© SP Scientific 2014
Product Chamber and Condenser Vacuum Leak Check
To check the product and condenser chambers, and related vacuum connections:
Open the product chamber door and visually inspect the shelf assembly for 1.
liquid leaks. Use a flashlight if necessary. If a liquid leak is observed, call SP
Scientific Service immediately.
If liquid leaks are not found, isolate the lyophilizer’s external condenser from 2.
the product chamber. You may plug the throat of the product chamber using
rubber stopper, or close the isolation valve (LyoStar™ 3 lyophilizers are
equipped with a pneumatic isolation valve).
Start the condenser manually. Wait for the condenser temperature to drop 3.
below -40 °C.
Start the vacuum pump. Allow the system to stabilize at its lowest specified 4.
temperature and vacuum.
If the condenser is not able to reach vacuum levels of 20 millitorr or below, 5.
begin checking all vacuum system connections between the condenser and
the vacuum pump. Ensure that the drain port is closed and that connections
are snug. If you need additional assistance, call SP Scientific Service.
If the condenser is able to reach vacuum levels of at least 20 millitorr, you can 6.
likely rule out any leaks from the condenser area. The suspected vacuum leak
may be related to the product chamber area.
To check the product chamber for leaks, begin by placing your finger over the 7.
vacuum level control port at the rear of the system.
If you feel a sucking sensation when your finger is on this valve port, the 8.
solenoid valve may be faulty. Call SP Scientific Service.
If you do not feel vacuum being pulled through the vacuum level control port, 9.
apply a product such as SNOOP® liquid leak detector to the external surfaces
of the product chamber door gasket.
8
While applying this liquid, monitor the
chamber vacuum reading for fluctuations. Watch the door gasket for leak
locations. Replace the door gasket as needed. Call SP Scientific Service.
If leaks are not detected, apply the liquid leak detector to all fittings located on 10.
top of the product chamber. Again, monitor the chamber vacuum reading for
fluctuations and watch for leak locations. If a leak is identified near the fittings,
call SP Scientific Service.
If the system is still unable to pull adequate vacuum, call SP Scientific 11.
Service.
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SNOOP® liquid leak detector is manufactured by the Swagelok Company.