Thoroughly inspect and clean interior and exterior of machine with vacuum cleaner, (remove panels).
Clean drain pan and note excessive corrosion. Correct as necessary.
Check for refrigerant leaks using a halogen leak detector, soap bubbles, or similar testing device. If leaks are not able to be stopped or corrected, report leak status to supervisor. Consult the Material Safety Data Sheets (MSDS) for disposal requirements.
Check refrigerant levels for proper charge and recharge as needed.
Check condition of cooling and reheat coils. Use fin comb as needed.
Clean coils using detergent solution and warm water if coil is heavily soiled.
Drain and clean humidifier pan or pad, whichever applies. Replace pad if required. Remove corrosion, prime, and paint as needed.
Lubricate motor and fan bearings, if not sealed. Check alignment of motor and fan. Clean all fans or blowers.
Check belt tension and condition. Adjust or replace as required if belt driven.
On direct drive units, check set screws on fan shaft to make sure they are tight.
Replace filters as needed.
Check compressor oil level (not on hermetically sealed units) if compressor is equipped with a sight glass.
Run machine. Check action of controls, relays, switches, including fused disconnect type, etc., to see that:
a. compressor(s) run at proper setting.
b. reheat coils activate properly (if applicable).
c. humidistat activates humidifier (if applicable).
d. suction and discharge pressures are proper.
e. discharge temperature is set properly.
Clean surrounding area, record results and findings and report any needed repairs or operational adjustments.

Obtain and review manufacturer's instructions. Follow manufacturer’s instructions or procedures if different to these instructions or procedures.
Schedule PM on associated equipment in conjunction with this guide, i.e., air cooled condensers, glycol dry coolers, cooling tower, etc.
Review manufacturer's instructions and the Standard Operating Procedure for "Controlling Hazardous Energy Sources."
De-energize, lock-out, and tag electric circuits.
Comply with the latest provisions of the Clean Air Act and Environmental Protection Agency (EPA) regulations as they apply to protection of stratospheric ozone.
No intentional venting of refrigerants is permitted. During the servicing, maintenance, and repair of refrigeration equipment, the refrigerant must be recovered.
Whenever refrigerant is added or removed from equipment, record the quantities.
Recover, recycle, or reclaim the refrigerant as appropriate.
If disposal of the equipment item is required, follow regulations concerning removal of refrigerants and disposal of the equipment.
If materials containing refrigerants are discarded, comply with EPA regulations as applicable.
Refrigerant oils to be removed for disposal must be analyzed for hazardous waste and handled accordingly.
Closely follow all safety procedures described in the
Material Safety Data Sheet (MSDS) for the refrigerant and all labels on refrigerant containers.
Schedule outage with operating personnel.

Standard and Phillips head screw drivers-various sizes; Pliers-vise grip (2), slipjoint, needlenose, diagonal; cutting pliers, side cutters; Ball peen hammer; Hack saw and spare blades; 3/8' drive socket set and ratchet; Small set of Allen wrenches; Assorted center punches, drift punches, and steel chisel; 12' measuring tape; Crescent wrenches 4" to 8"; Open and box end wrenches ¼" to ¾"; File; Pipe wrenches to 14"; Small level and square; Pocket knife; Flashlights; Grease guns and oilers; Wire brush; Extension cord and inspection lights; Various cleaning tools - brushes, scrapers, etc; Emery cloth.
Refrigeration – gauges; Leak detector-electronic or halogen; Pocket thermometer; Clamp on meter (volt - ohm - amp meter); Flaring tool; Tubing cutters; Packing kit and packing; Crescent wrenches to 14"
Cleaning tools and materials.
Vacuum.
Fin comb.
Grease gun and oiler.
Ladder - ceiling mounted units. Check ladder for defects. Do not use defective ladders.
Self sealing quick disconnect refrigerant hose fittings.
Refrigerant recovery/recycle unit.
EPA/DOT approved refrigerant storage tanks.
Approved refrigerant.
Electronic leak detector.
Safety goggles.
Gloves.
Standard Electrical Power Outlet