Labconco FreeZone 6 Liter Benchtop Freeze Dry Systems 77520 Series - Manual (Page 28)

24
Chapter 4: Using Your Freeze Dryer
Product Service: Domestic 1-800-522-7658, International 816-333-8811
Shut Down
At the end of a run or when a sufficient amount of condensate
accumulates on the collector coil to obstruct the flow of vapor to
the collector chamber, the Freeze Dryer should be defrosted. First,
release system vacuum by turning the plastic knob on a valve to
the open position or by pulling the collector chamber drain plug
out of the drain hose. Now press the Vacuum Switch on the
control panel to turn the vacuum pump OFF. Press the
Refrigeration Switch next to the illuminated LED to turn OFF the
refrigeration system. Turn OFF the Main Power Switch on the left
hand side of the cabinet.
Defrosting
The following procedure should be followed when defrosting the
collector coil:
1. Pull the collector chamber drain hose out from the right hand
side of the Freeze Dryer and remove the drain plug. Place the
drain hose in a suitable container to collect the condensate that
will melt off the collector coil.
2. Remove the collector chamber lid and allow ambient room air
to melt the ice. Dispose of the liquid appropriately.
3. Flush the collector chamber with water and wipe chamber dry.
4. If rapid defrost is desired, pour warm water over the collector
coil. Do not allow the liquid to enter the vacuum port on the
upper rear of the chamber.
5. Reinstall the drain hose plug and slide drain hose back into the
side of the cabinet. Dispose of the liquid appropriately.
Utilization of acid requires immediate cleaning
and neutralization after defrost or physical
damage to the collector chamber and collector
coil will result.
Do not attempt to chip ice from the collector coil
as damage may occur to the coil.
Never attempt to start the vacuum pump when
there is liquid in the collector chamber. This
could result in damage to the vacuum pump.
!