Carrier ThinLINE 69NT40-541 Istruzioni per l'installazione

Container Refrigeration

ANNUAL INSPECTION

For

ThinLINE 69NT40-541

PrimeLINE 69NT40-561

Container Refrigeration Units

62-10327 Rev A

ANNUAL INSPECTION

For

ThinLINE 69NT40-541

PrimeLINE 69NT40-561

Container Refrigeration Units

1 62-10327

PURPOSE

This manual has been written to assist owners and operators of Carrier

Transicold MicroLink equipment in obtaining the maximum operating

life from the equipment. It is written as an annual maintenance guide for

ThinLINE and PrimeLINE units and it is recommended that all units are

serviced with these procedures annually to obtain maximum operating

time from the equipment.

This manual is to be used in conjunction with the operations & service

manuals supplied with the equipment. Reference is made throughout

these pages to the operations & service manuals, which are posted

electronically on the Carrier Transicold Container website

http://www.carrier.com/container-refrigeration/en/worldwide/

Navigate to SERVICE & SUPPORT / LITERATURE / DOCUMENT

FINDER (Refer to Figure 1).

Figure 1 Carrier Transicold Container Website

62-10327 2

TOOLS REQUIRED

• Wrench set, 3/8 to 11/16

• Screwdrivers, flat, crosspoint (Phillips) and Pozi-Drive

• Torque wrench and sockets

• R134a Refrigerant leak detector

• Refrigeration gauge set

•Fincomb

• Megohm meter

• Multimeter, with voltage and resistance ranges

1. Before opening any panels for inspection or replacing any

electrical component in the system, apply the Lock Out/Tag

Out procedure, turn the unit off, open the unit circuit breakers

(CB1 and CB2 if equipped) and unplug the unit from main

power. Apply a locking device to ensure the system cannot

be plugged in during the maintenance procedure.

2. Carrier Transicold recommends wearing the appropriate

safety equipment such as safety glasses, gloves, etc.

whenever working on refrigeration equipment. Personnel

should be aware of the dangers inherent in servicing

equipment and assure they have read the relevant

operations and service manual for any unit.

3. To prevent damage to aluminum we recommend low

pressure fresh water cleaning. See evaporator coil section

for exception.

4. All local requirements for recovery and safe disposal of

refrigerants and oils must be followed.

WARNINGS AND NOTES

3 62-10327

UNIT MODEL NUMBER

The Model/Serial Number plate provides the unit model number

(Refer to Figure 2).

Figure 2 Model/Serial Number plate

62-10327 4

Figure 3 Evaporator Coil

Figure 4 Evaporator Fan Blade

5 62-10327

PHYSICAL INSPECTION

Rear of Unit

1. Remove the upper internal access panel, remove any debris, and

rinse the rear of unit with low pressure water. This includes the

evaporator coil (Refer to Figure 3).

2. Examine the evaporator motors for excessive end play. Slowly spin

the evaporator fan blade and feel for any bearing drag. Replace

bearing if required.

3. Examine the evaporator fan blade (Refer to Figure 4):

a. Check for cracking or wear. Replace fan blade as necessary.

b. Check that evaporator motor clamp brackets are secured.

4. Examine wire harnesses for any wear or damage and repair as

required. Ensure they are properly secured.

5. Examine defrost termination sensor (DTS) to ensure it is properly

secured to the unit and free of damage (Refer to Figure 5).

Replace or repair if necessary.

Figure 5 DTS Sensor

6. Examine sensors (i.e. return air, supply air, temperature recorder,

humidity and evaporator temperature sensors) for proper

positioning and security to unit. Examine sensor leads for damage,

replace or repair as necessary. Refer to the operation & service

manual for details on equipped sensors. Locating operation &

service manuals is explained in the Purpose section.

62-10327 6

7. Examine the drain cup, drain funnel and drain gutters. Repair as

required.

8. Clean the defrost drain lines using a low pressure water hose to

flush debris contained in the drain (Refer to Figure 6), and check

that the water is running freely to the outside.

Figure 6 Defrost Drain

9. Examine the TXV (Thermostatic Expansion Valve) or EEV

(Electronic Expansion Valve) for:

a. Refrigerant leaks (TXV or EEV).

b. Corrosion (TXV or EEV).

c. Proper insulation of the power head (TXV equipped,

refer to Figure 7).

d. Proper sensing bulb location and insulation (TXV

equipped, refer to Figure 7).

e. Electrical coil is correctly seated on the EEV (EEV

equipped, refer to Figure 8).

f. EEV coil boot is properly fitted over valve (EEV

equipped, refer to Figure 8).

g. Correct position of ETS1 and ETS2, securing tie is in

position and insulation is in place (Refer to Figure 9).

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