Clean Water-Cooled Condenser; Defrost Chamber - Thermo Scientific 700 Series Manual

Section 4
Maintenance
Clean Water-cooled
Condenser
CIP (Clean-In-Place)

Defrost Chamber

4-2 7010708
The water-cooled condenser can be cleaned-in-place by using the CIP
procedure. Cleaning solutions can be used, depending on type of deposits
or build-up to be removed.
Do not use liquids that are corrosive to stainless steel or the brazing
material (copper or nickel).
1. Disconnect the unit from the water supply.
Procedure
2. Drain the unit.
3 . Rinse with fresh water and drain the unit again.
4. Fill with fresh water.
5. Add cleaning agent (solution and concentration dependent on deposits
or build-up).
6. Circulate cleaning solution (if feasible).
7. Drain the cleaning solution.
8. Add and circulate a passivating liquid for corrosion inhibition of plate
surfaces.
9. Drain this liquid.
10. Rinse with fresh water and drain.
11. Reconnect the water supply and fill the unit.
12 . Return to service.
1. Remove all product and place it in another freezer.
2. Turn the unit off and disconnect it from the power source.
3. Turn off the battery switch (O). See Figures 4-1 and 4-2.
4. Open the lid and remove sub-lids. Place towels on the chamber floor.
5. Allow the frost to melt and become loose.
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