Carrier NaturaLINE 69NT40-601 User manual

Container Refrigeration
ANNUAL INSPECTION
For
NaturaLINE 69NT40-601
Container Refrigeration Units
62-12119

ANNUAL INSPECTION
For
NaturaLINE 69NT40-601
Container Refrigeration Units
© 2019 Carrier Corporation ● Printed in USA September 2019

1 62-12119
TABLE OF CONTENTS
PURPOSE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
TOOLS REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
WARNINGS AND NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
UNIT NAMEPLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
REAR OF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
FRONT OF UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
OPERATIONAL INSPECTION . . . . . . . . . . . . . . . . . . . . . . . 19
APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

1 62-12119
PURPOSE
This annual maintenance manual has been written to assist owners and
operators of Carrier Transicold Container equipment in obtaining the
maximum operating life from the equipment. 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.container.carrier.com/
Once at the website, under SERVICE & SUPPORT, click on Literature.
Then, use the DOCUMENT FINDER to locate the manual.

62-12119 2
TOOLS REQUIRED
• Wrench Set
• Screwdrivers: Flat, Phillips, and Pozi-Drive
• Torque Wrench and Sockets
• CO2 Refrigerant Leak Detector (07-00529-00)
• CO2 Refrigeration Gauge Set (07-00527-00)
• Fin Combs (8 and 16 Fins per Inch)
• Megohm Meter
• Multimeter
1. Before opening any panels for inspection or replacing any
electrical component in the system, apply the Lock Out / Tag
Out procedure:
a. Turn the unit off.
b. Open the unit circuit breaker (CB1).
c. Unplug the unit from main power.
d. 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 hav e read the relevant
operations and service manual for any unit.
3. To prevent damage to aluminum, it is recommend to use low
pressure fresh water cleaning.
4. All local requirements for recovery and safe disposal of
refrigerants and oils must be followed.
5. If any leak repair is made on the unit, it MUST be leak tested
using the CO2 leak detector and full refrigerant charge on the
system.
WARNINGS AND NOTES
!

3 62-12119
UNIT NAMEPLATE
The unit nameplate provides the unit model number, parts identification
number (PID) and serial number. The Pressure Equipment Directive
(PED) Compliance Label is located near the nameplate.
Container Refrigeration System
Fluid Group 2 (R744)
Max Allowable Pressure
Min Temp
Max Temp
PRV Set Pressure
Test Pressure
Units LS MS HS
Bar
Bar
Bar
C
C
89.6 108.2 150.9
-40
65 135
89.6 108.2 150.9
129 129 171
xxxx
Carrier Transicold Pte Ltd
251 Jalan Ahmad Ibrahim
Singapore 629146
Date of Manufacture:Model Number
Parts ID Number:
Serial Number:
Voltage:
Dry Wt: Refrig:
Charge:
Phase: Hertz: Max Amp Draw:
Net Refrigeration Capacity: Interior Temperature: Ambient Temperature:
Item:
Basic Unit:
Fan Motors:
Compressor:
Months:
Warranty Period From Date In Service In Accordance With 62-02439-01
Except As Noted
Warranty Number: xxxxxxxxx
MADE IN SINGAPORE
Place Date Label Here
380/460 3 50/60 25
20500
32000
BTU/HR
BTU/HR
Watts
Watts
at
at
0 F / -17.8 C
35 F / 1.7 C
100 F / 37.8 C
100 F / 37.8 C
10.0 LB
4.53 KG R-744
5995
9358
69NT40-601-xxx
NTxxxx
xxxx LB
xxxx KG
xx
xx
xx
Pressure Equipment Directive (PED)
Compliance Label
Unit Nameplate
• Model #, PID, Serial #

62-12119 4
REAR OF UNIT
1. Remove the back access panel on the back of the unit to
gain access to the evaporator components.
2. Evaporator Coil. Refer to Figure 1.
a. Clean with low pressure water. If the evaporator coil is noted
to have green patina or white powder, it is recommended to
wash the coil with cleaner P/N NU4371-88.
Refer to the TechLINE December 2010 issue for
Evaporator Section Cleaning.
b. Straighten any fin damage using the correct fin comb (8 fins
per inch).
c. Check for any signs of leaks or corrosion and repair / replace
as necessary.
NOTE
For certain cargos exposed to fumigation, it is recommended
after the trip to carefully wash all internal parts in the evapo-
rator section to avoid potential corrosion.
Figure 1 Evaporator Coil
3. Evaporator Motor and Stator. Refer to Figure 2.
a. Slowly spin the evaporator fan blade and feel for any signifi-
cant bearing drag. Replace the bearing if it is bad.
b. Check that the evaporator motor clamp brackets are secured.
If not accessible, refer to step 17.

5 62-12119
c. Check for excessive corrosion on the stator. If cleaning is
needed, refer to step 2a.
4. Evaporator Fan Blade. Refer to Figure 2.
a. Check for cracking or wear. Replace the fan blade as necessary.
Figure 2 Evaporator Motor and Fan Blade
5. Wire Harnesses.
a. Examine for any worn or damaged wires and repair as
required.
b. Ensure wire harnesses are properly secured.
6. Defrost Termination Sensor (DTS). Refer to Figure 3.
a. Ensure the DTS is properly secured to the unit and free of
damage. Replace or repair if necessary.
Figure 3 Defrost Termination Sensor (DTS)

62-12119 6
7. Defrost Drain.
a. Inspect the drain cup and drain gutters. Refer to Figure 4.
Repair as required.
Figure 4 Defrost Drain Cup and Gutters
b. Clean the defrost drain lines using a low pressure water hose
to flush debris contained in the drain. Check that the water is
running freely from the outside drain. Refer to Figure 5.
Figure 5 Outside Drain
8. Electronic Expansion Valve (EEV). Refer to Figure 6.
a. Check for refrigerant leaks and corrosion.
b. Verify that the EEV coil is connected to the stepper drive pow-
erpack.

7 62-12119
Figure 6 Electronic Expansion Valve (EEV)
9. Evaporator Temperature Sensor (ETS). Refer to Figure 7.
a. Ensure that the wire tie is in position and insulation is in place.
Figure 7 Evaporator Temperature Sensor (ETS)
Wire Tie
1 in.
(25.4 cm)

62-12119 8
10. Heaters and Heater Brackets. Refer to Figure 8.
a. Check for damage.
b. Ensure that the heaters are properly positioned in the retain-
ing clips.
c. Inspect wiring for correct connections, and repair if required.
Refer to the TechLINE June 2014 issue for heater
Megaohm testing.
Figure 8 Heaters
11. Heater Termination Thermostat (HTT). Refer to Figure 9.
a. Check for proper positioning and damage.
b. Replace as necessary.
Figure 9 Heater Termination Thermostat (HTT)

9 62-12119
12. USDA and Interior Communication Sockets. Refer to
Figure 10.
a. Check that connectors are clean, dry and have the caps fitted.
b. If corroded or cap is missing, repair or replace as needed.
Figure 10 USDA
13. Air Flow.
a. Check channels or "T" bars on the floor and under the lower
air baffle / kick plate for cleanliness.
b. Channels must be free of debris for proper air circulation.
c. Clean floor drains.
d. Ensure that the kick plate is correctly installed and in good
condition for correct air flow.

62-12119 10
FRONT OF UNIT
Refer to the Warnings and Notes section in this manual before
proceeding with these instructions.
1. Ambient Temperature Sensor
(AMBS)
2. Unloader Solenoid Valve (USV)
3. Service Fitting, Suction
4. Low Side Pressure Relief Valve
(LS PRV)
5. Compressor
6. Compressor Discharge Tem-
perature Sensor (CPDS)
7. High Side Pressure Relief
Valve (HS PRV)
8. High Pressure Switch (HPS)
9. Plug
10. Gas Cooler Temperature Sen-
sor (GCTS)
11. Flash Tank
12. Service Fitting, Discharge
13. Discharge Pressure Trans-
ducer (DPT)
14. Filter Drier
15. Flash Tank Pressure Relief
Valve (FT PRV)
16. Economizer Solenoid Valve
(ESV)
17. Flash Tank Pressure Trans-
ducer (FPT)
18. High Pressure Expansion Valve
(HPXV)
19. Supply Recorder Sensor (SRS)
20. Supply Temperature Sensor
(STS)
- - - - -
12
3
4
5
6
7
8
9
12 11 10
18
17
16
15
14 13
20
19

11 62-12119
14. Remove or Open Exterior Panels.
15. Leak Checking.
a. Examine the unit for traces of oil residue. Leak check the unit
using an electronic leak detector. Leaks are typically found as
a dirty / oily residue near the leak location. All mechanical
joints to be leak tested can be found in the Appendix. Repair
as required and clean the unit using low pressure water.
16. Corrosion.
Perform on-going corrosion maintenance if corrosion found on
any painted surface. Perform these steps:
a. Remove loose corrosion material.
b. Lightly scuff up the surface with a Scotch-Brite Heavy Duty
Scour Pad (or similar).
c. Wipe down with isopropyl alcohol to remove loose material
and any grease.
d. Paint using the following standard paint specifications (pur-
chase locally).
17. Access Panels. Refer to Figure 11.
a. Remove the left and right hand evaporator access panels.
b. Check that the access panel seals are present and in good
condition to provide a good seal.
c. Check for excessive shaft end play on the evaporator motor.
d. Replace panels on completion assuring all hardware (includ-
ing the Mylar washer) is installed.
e. When reinstalling the panels, use a torque setting of 60 +5 in-
lbs. (6.8 N-M) and the pattern shown in Figure 11.
Figure 11 Access Panels
Part Color Brand Paint
Compressor /
Flash Tank
Grey DNT V-TOP #188
Frame White Cloud Rust-Oleum 9100 System

62-12119 12
18. Gas Cooler Motor and Fan Blade. Refer to Figure 12.
a. Check for cracking or wear on the fan blade. Replace as nec-
essary.
b. Check for proper fan positioning in the shroud. See Figure 12
(a) for reference.
c. Slowly spin the fan blade, feeling for any bearing drag.
Replace the motor if the fan is unable to freely rotate.
d. Examine the fan motor for signs of overheating or physical
damage. Repair or replace as necessary.
e. Check the motor mounting bracket for cracking where welded
to the frame. See Figure 12 (b). Repair if necessary.
f. Verify the fan has HFF marked on the hub which is raised and
painted. See Figure 12 (c).
Figure 12 Gas Cooler Fan Position and Markings
19. Gas Cooler Coil.
a. Check for any signs of leaks. Repair or replace as necessary.
b. Straighten any fin damage using fin comb (16 FPI).
a) Fan Positioning
b) Marking
c) Marking
37 mm (1.5”)
Fan
Shroud

13 62-12119
c. Clean the coil using a low pressure water hose. The preferred
wash direction is inside to outside. Refer to Figure 13. The
direction is opposite to air flow direction.
NOTE
Static application of container units may require more fre-
quent cleaning due to subjected environment conditions.
d. Check for signs of excessive corrosion to the fins and tube
sheets. Replace as necessary.
Figure 13 Gas Cooler Coil Cleaning
20. High Pressure Expansion Valve (HPXV). Refer to Figure 14.
a. Make sure the HPXV coil is snapped down fully and the coil
retention tab is properly seated in one of the valve body dimples.
b. Ensure that the coil boot is properly fitted over the valve body.
Figure 14 High Pressure Expansion Valve (HPXV) and Coil
Not Seated Seated

62-12119 14
21. Economizer and Unloader Valve (ESV / USV). Refer to
Figure 15.
a. Remove the solenoid coil.
b. Verify that the O-ring is seated on the valve stem.
c. Press the coil onto the valve stem ensuring that it is pressed
all the way down, engaging with the O-ring.
Figure 15 Economizer and Unloader Valve (ESV / USV)
22. Pressure Relief Valves (LS, FT & HS). Refer to Figure 16.
a. Inspect the pressure relief valves for any indication of release
on the indicator tape. If there is indication of a release,
replace the pressure relief valves.
Figure 16 Pressure Relief Valves (LS, FT & HS)
Solenoid Coil
O-Ring
Solenoid
Indicator Tape