Carrier ThinLINE 69NT40-541 Installation instructions

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
© 2017 Carrier Corporation ●Printed in USA June 2017

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).