A refrigeration maintenance agreement should at least provide for the following:
*	A minimum number of inspections each year;
*	Requirement to check all electrical connections, measure voltage and current; 
*	Lubricate all moving parts;
*	Inspect and clear the condensate drain;
*	A diagnostic start and test;
*	Check thermostat settings; 
*	Clean evaporator and condenser air conditioning coils; 
*	Checking refrigerant level;
*	Clean and adjust blower components. 
This form is a generic example that may be referred to when preparing such a form for your particular state. It is for illustrative purposes only. Local laws should be consulted to determine any specific requirements for such a form in a particular jurisdiction.