CSZ MICRO-TEMP LT 749 - High Limit and Low Water Checks; High Limit Safety Check

FIELD REPAIR/SERVICE MICRO-TEMP
®
LT, Model 749
OPERATION AND TECHNICAL MANUAL
Page 39 of 75
4.10 HIGH LIMIT SAFETY CHECK
A. While depressing the “Increment”, “Decrement” and “SET” buttons
simultaneously, turn unit ON. Continue to press and hold buttons until
audible and visual high temp indicator is indicated, then release
buttons.
B. Simultaneously press “Increment”, “Decrement” and “SET” buttons again
then release and press “SET” button.
Note: Do not touch any other buttons.
C. Unit will heat until it reaches the high limit indicator 44C ± 0.5°C (111°F ±
1°F).
D. Verify display shows 44C (111°F). Verify temperature is within allowable
range of 44C ± 0.5°C (111°F ± 1°F). Verify audible and visual
indicators and that the pump and heater shut off.
E. Turn unit off and allow the unit to cool down below 40C before proceeding.
4.11 LOW WATER INDICATOR CHECK
WARNING
 The repair, calibration, and servicing of the MICRO-TEMP
®
LT unit should be performed by
qualified Medical Equipment Service Technicians, Certified Biomedical Electronics
Technicians, or Certified Clinical Engineers familiar with good repair practices for servicing
medical devices, and in accordance with instructions contained in this manual. Improper
repair can result in damage to the system and patient injury.
 Always unplug the unit before accessing internal components during service. Failure to
unplug the unit could result in electric shock.
WARNING
 The repair, calibration, and servicing of the MICRO-TEMP
®
LT unit should be performed by
qualified Medical Equipment Service Technicians, Certified Biomedical Electronics
Technicians, or Certified Clinical Engineers familiar with good repair practices for servicing
medical devices, and in accordance with instructions contained in this manual. Improper
repair can result in damage to the system and patient injury.
 Always unplug the unit before accessing internal components during service. Failure to
unplug the unit could result in electric shock.
CAUTION
 Always drain the MICRO-TEMP
®
LT unit to a sanitary drain because bio-contaminants may
be present in the unit’s water supply.