Chapter 3. OPERATOR'S MAINTENANCE INSTRUCTIONS

TM 5-4120-341-13

CHAPTER 3

OPERATOR'S MAINTENANCE INSTRUCTIONS

CHAPTER OVERVIEW

This chapter contains all the necessary maintenance instructions to keep your air conditioner in good repair.

INDEX

Page

Para

3-1

Lubrication Instructions

3-2

3-1

Operator Troubleshooting

3-1

3-3

Operator Troubleshooting Table

3-2

3-4

Operator's Maintenance Procedures

LUBRICATION INSTRUCTIONS

Section I.

3-1. No lubrication is required.

TROUBLESHOOTING

Section Il.

3-2. GENERAL

a. This section provides information useful in diagnosing and correcting unsatisfactory operation or

failure of the air conditioner. Each malfunction is followed by a list of probable causes and actions to take to

remedy the malfunction. You should perform the tests/inspections and corrective actions in the order listed.

b. This manual cannot list all malfunctions that may occur; nor all tests or inspections and corrective

actions. If a malfunction is not listed or is not corrected by listed corrective actions, notify your supervisor.

3-3. TROUBLESHOOTING TABLE

Malfunction

Test or Inspection

Corrective Action

AIR CONDITIONER

1. AlR CONDITIONER FAILS TO OPERATE

Step 1.

Check to see if main power cord is plugged in.

Connect power cable to receptacle supplying 115 VAC, single phase, 60 Hz power.

Step 2.

Check to see if selector switch is in OFF position.

Place selector switch in FAN or COOL position.

2. INSUFFICIENT COOLING

Step 1.

Check to see if selector switch is in COO L position.

Place selector switch in COOL position.

Step 2.

Check to see if THERMOSTAT is in COOLER position.

Place THERMOSTAT in COOLER position.

Step 3.

Inspect air diffuser and return air grills for obstructions.

Remove obstructions from air diffuser and return air grills (para 3-6).

3-1