Thermo Scientific 722 Operating And Maintenance Manual page 22

Model 700 Series -40C ____________________________________________________________________________________________________________Maintenance
Refer to Manual Section
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Figure 1-4 for probe location
4.5, 4.6
4.2
1.5.f, 4.7
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2
4.3
* Qualified service technicians only
** Dispose of properly, according to all state and federal regulations
To minimize ice build-up inside of freezer:
• Locate the freezer away from drafts or heating/cooling vents
• Keep the number of door openings to a minimum
• Minimize the length of time door is open
• Make sure door latches securely after opening
Preventive Maintenance for 700 Series Freezers
Action
Verify ambient temperature, <90°F
* Adjust door handle for firm latching, as needed
Check and clean probe cover, gaskets, hinges, and vacuum relief port
of ice and snow
Check air filter. Clean or replace as needed
Check alarm back-up battery
Check condenser fan motor for unusual motor noise or vibration
* Verify and document calibration, at the minimum, annually
* Clean condenser compartment and wipe off condenser
Monthly
More frequent cleaning may be
required, depending on use and
environmental conditions
4 - 5
Yearly Every
2 Years
** Replace