FIELD REPAIR/SERVICE MICRO-TEMP
®
LT, Model 749
OPERATION AND TECHNICAL MANUAL
Page 34 of 75
4-2.3. DISINFECTION/DRY STORAGE PROCEDURE FOR CIRCULATING WATER
UNITS
Quarterly, at a minimum, the FLUID CIRCUIT DISINFECTION/DRY STORAGE PROCEDURE,
listed below, should be conducted.
Chemical Cleaning Circulation Chart
FLUID CIRCUIT DISINFECTION/DRY STORAGE PROCEDURE
for Circulating Water Units Utilizing Household Bleach
The following procedure disinfects the fluid circuit in these products. The required tools/supplies
are appropriate drain hose(s) and/or hose connector(s), household bleach, distilled water, U.S.P.
Grade Propylene Glycol, and the appropriate AC electrical power
Procedure:
1. Drain the water from the reservoir as described in Section 4-2.1.
2. Turn unit off (“O” position).
3. Fill the reservoir with the appropriate amount of household bleach per the below chart.
4. Fill the reservoir with warm distilled water.
5. Attach bypass hose to the quick disconnect fittings of the unit.
6. Turn the unit on and circulate per the Chemical Cleaning Circulation Chart (above).
7. Drain the unit as instructed in Step #1.
8. Repeat Steps 3-6 three (3) times.
9. Rinse the unit three (3) times as described in Steps 4-6. Be sure to omit the household
bleach (sodium hypochlorite).
10. After the third rinse, drain the unit and fill the reservoir with distilled water and circulate.
11. Check the water with pH strips or other appropriate test method for detecting bleach.
If bleach is detected, repeat Steps 4-6.
12. If unit is to be returned to service, once no bleach is detected, add the appropriate
amount of U.S.P. Grade Propylene Glycol to the water reservoir per the following
chart:
For safe handling and use of chemicals, follow manufacturer guidelines. Users
should not use cleaning or decontamination methods different from those
recommended by CSZ without first checking with CSZ that the proposed methods
will not damage the equipment.
Always drain the MICRO-TEMP
®
LT to a sanitary drain because bio-
contaminants may be present in the unit’s water supply.
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