Emerson DH, VH, DE, VE manual Maintenance Inspection CHECKLIST-SEMIANNUAL

Maintenance Inspection Checklist—Semiannual

10.0MAINTENANCE INSPECTION CHECKLIST—SEMIANNUAL

Date:			Prepared by:
Model #:			Serial #:
Filters				Refrigeration Cycle/Section
1.		Unrestricted air flow	1.			Check suction pressure
		Check filter switch			2.	Check refrigerant lines
	2.
		Wipe section clean				Check head pressure
	3.				3.
						Check for moisture (sight glass)
Blower Section					4.
1.		Impellers free of debris				Check refrigerant level
					5.
		Bearings free				Check discharge pressure
	2.				6.
		Belt tension and condition				Check hot gas bypass valve
	3.				7.
		Inspect & tighten electrical connections				Check thermostatic exp. valve
	4.				8.
Compressor Section				Reheat

1.Check for leaks

2.Check oil levels

3.Inspect & tighten electrical connections

Air Cooled Condenser (if applicable)

1.Condenser coil clean

2.Motor mount tight

3.Bearings free and in good condition

4.Refrigerant lines properly supported

5.Inspect & tighten electrical connections

Water/Glycol Condenser (if applicable)

1.Cleaning internal tubes

2.Inspect water regulating valves function

3.Check glycol solution

4.Inspect for water/glycol leaks

5.Glycol pump

6.Inspect for glycol leaks

Glycol Pump

1.Inspect for glycol leaks

2.Check pump operation

3.Inspect & tighten electrical connections

NOTES

1.Check reheat element operation

2.Inspect elements for cleanliness & corrosion

3.Inspect & tighten electrical connections

Steam Generating Humidifier

1.Check canister for deposits

2.Check condition of steam hoses

3.Check water make-up valve for leaks

4.Inspect & tighten electrical connections

5.Inspect/clean out entire drain line

Infrared Humidifier

1.Check pan drain for clogs

2.Check humidifier lamps

3.Check pan for mineral deposits

4.Inspect & tighten electrical connections

Air Distribution Section

1. Restriction in grille free area

Electric Panel

1.Check fuses

2.Inspect & tighten electrical connections

3.Check operation sequence

4.Check contactor operation

Signature

Make photocopies of this form for your records

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