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TK 55032-18-OP-EN

27

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ntt:: If the Select key or the Enter key is not pressed within 20 seconds

to select the new Setpoint Temperature, the unit will continue to
run at the original Setpoint Temperature.

Initiating Manual Defrost Cycle

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ntt:: Before initiating a manual defrost, verify that the unit is not

already in a defrost cycle. When the unit is in a defrost cycle the
defrost symbol appears on display.

1. Press and release the Select key once, and the letters dEF will appear

(flashing) on display along with the present defrost condition OFF.

Figure 14.

Defrost Off

2. To activate manual defrost, press the Enter key and then the Up or Down

key and the defrost will change to ON.

Figure 15.

Defrost On

3. Press the Select key twice to return to the Standard Display where the

Defrost symbol will appear when the defrost cycle begins.

N

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e:: Manual defrost will be aborted if there is no ice on the coil.

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ntt:: The evaporator coil must be below 36°F (2.26°C) for a defrost

to be enabled.

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Summary of Contents for V-520 Series

Page 1: ...Revision A February 2021 T TK K 5 55 50 03 32 2 1 18 8 O OP P E EN N V 520 Series Units with Direct Smart Reefer Single and Multi Temperature Systems Operator s Manual...

Page 2: ...n nd da at ti io on ns s o or r d de es sc cr ri ip pt ti io on ns s c co on nt ta ai in ne ed d h he er re ei in n T Th he e p pr ro oc ce ed du ur re es s d de es sc cr ri ib be ed d h he er re ei i...

Page 3: ...to the extent that such activity is expressly permitted by applicable law notwithstanding this limitation The product may include third party software separately licensed as specified in any document...

Page 4: ...tric Standby Nameplates Models 20 and 50 Only 12 U Un ni it t D De es sc cr ri ip pt ti io on n 1 14 4 Introduction 14 Standard Unit Features 15 Optional Features 15 System Components 15 Condenser 15...

Page 5: ...urmeter Menu 32 P Pr re et tr ri ip p I In ns sp pe ec ct ti io on n B Be ef fo or re e L Lo oa ad di in ng g R Re ef fr ri ig ge er ra at te ed d C Ca ar rg go o 3 33 3 U Un ni it t O Op pe er ra at...

Page 6: ...ec ct ti io on n S Sc ch he ed du ul le e 3 39 9 W Wa ar rr ra an nt ty y 4 41 1 Proposition 65 41 S Se er ri ia al l N Nu um mb be er r L Lo oc ca at ti io on ns s 4 42 2 E Em me er rg ge en nc cy y...

Page 7: ...IN NG G E Ex xa am mp pl le e Indicates a potentially hazardous situation which if not avoided could result in death or serious injury C CA AU UT TI IO ON N E Ex xa am mp pl le e Indicates a potential...

Page 8: ...th an Auto Start Stop feature allowing the engine to restart automatically if required by the system Refer to your vehicle s operator s manual regarding the Auto Start Stop safety warnings before acce...

Page 9: ...eezing anything it contacts Wear butyl lined gloves and other clothing and eye wear when handling refrigerant to help prevent frostbite Refrigerant Oil Hazards Observe the following when working with...

Page 10: ...emergency personnel arrive I In ng ge es st ti io on n Do not induce vomiting Immediately contact local poison control center or physician E EN NG GI IN NE E C CO OO OL LA AN NT T E Ey ye es s Immedi...

Page 11: ...from power source immediately check for signs of a pulse and respiration If no pulse is present start Cardio Pulmonary Resuscitation CPR If a pulse is present respiration might be restored by using mo...

Page 12: ...12 TK 55032 18 OP EN Figure 2 Automatic Start Caution Electric Standby Nameplates Models 20 and 50 Only Figure 3 Electrical Hazard Cautions S Sa af fe et ty y P Pr re ec ca au ut ti io on ns s...

Page 13: ...TK 55032 18 OP EN 13 Figure 4 Belt Caution S Sa af fe et ty y P Pr re ec ca au ut ti io on ns s...

Page 14: ...operating your unit simple while its design allows for ease of service The operating mode is selected automatically When the unit is connected to an electric power source engine driven operation is a...

Page 15: ...or Switch s System Components The system consists of the following main components Condenser Depending on your model the condenser will be located either on the roof of the vehicle or on the front of...

Page 16: ...and 50 Shown 1 3 2 RCS1708 1 Refrigeration Module 2 Standby Module 3 Condenser Module Figure 7 V 520 Nose Mount Condenser Shown Evaporator The evaporator is mounted on the ceiling inside the cargo box...

Page 17: ...the unit unless you completely understand the controls otherwise serious injury may occur The Direct Smart Reefer DSR Controller is mounted in the vehicle cab and is used to operate the refrigeration...

Page 18: ...connected to a remote power source A transformer in the condenser unit converts the 115 or 230 Vac to 12 Vdc to operate the unit s controls and refrigeration components Fuses The electrical component...

Page 19: ...located outside of the controller and should only be serviced by a authorized Thermo King Dealer Figure 11 Controller Fuses F1 5 amps F5 20 amps F9 15 amps F2 15 amps F6 15 amps F10 15 amps F3 15 amps...

Page 20: ...here is no demand for heat or cool the unit stops operating and goes into the Null mode While in the Null mode the unit is still monitoring the compartment temperature and will resume operation only i...

Page 21: ...Fahrenheit F 3 Heat Symbol The unit is heating Thermometer with an arrow pointing upward 4 Up Key Is used to increase the setpoint temperature 5 Select Key Is used to scroll through prompt displays a...

Page 22: ...tandard Display normally displays the return air temperature and the current operating mode with the appropriate symbol The example below shows 38 F temperature and cool mode with an alarm present If...

Page 23: ...erature Units 1 Press and release the Select key twice and the current Setpoint Temperature and the letters SP will appear on screen 2 Press the Up or Down arrow keys to select the desired Setpoint Te...

Page 24: ...ew Setpoint Temperature the unit will continue to run at the original Setpoint Temperature 4 R Re em mo ot te e L Lo oa ad d C Co om mp pa ar rt tm me en nt t The present Setpoint Temperature in the r...

Page 25: ...emperature setting where both compartments zones are active The screen shows the temperature in both compartments zones RCS1710 C C1 1 Compartment 1 is active while Compartment 2 is disabled Only the...

Page 26: ...ure unit only the temperature for Compartment 1 is displayed The screen shown as that of a single temperature unit but with the triangle symbol activated to indicate that it is actually a multi temper...

Page 27: ...and release the Select key once and the letters dEF will appear flashing on display along with the present defrost condition OFF Figure 14 Defrost Off 2 To activate manual defrost press the Enter key...

Page 28: ...splay After the condition that caused the alarm is corrected and the alarm has been cleared the unit will start automatically Refer to Alarm Code Descriptions p 31 Figure 17 Auto Start Alarm Manual St...

Page 29: ...dition in the unit must first be corrected See important note below After resolving the alarm condition press and release the Select key to remove existing Alarm codes The Standard Display will appear...

Page 30: ...een You will now see the bAt Alarm code 2 Press the Select key again to acknowledge the alarm and Press the select key again and again until the screen returns to the standard Display Buzzers Optional...

Page 31: ...high pressure sensor has become faulty or disconnected Contact your Thermo King Dealer dr1 dr2 Cargo Doors Are Open Units with door switch option only Check if the Doors are open if not then the door...

Page 32: ...y use the Select key to display Alarms if any active Defrost Status Temperature Setpoint Hourmeter Menu To open the Hourmeter Menu from the Standard Display press the Select key for three seconds and...

Page 33: ...e inspections Figure 20 Visual Pretrip Inspection 1 2 4 3 5 1 3 4 5 2 RCS1725 1 Check that engine driven compressor belt is in good condition 2 Check that condenser inlet and outlet areas are clean an...

Page 34: ...ef fr ro os st t When the unit has finished pre cooling the cargo box the evaporator temperature should have dropped below 36 F 2 2 C Initiate a manual defrost cycle with the In Cab Controller The de...

Page 35: ...lkhead and walls a minimum of 4 00 inch 100 mm 5 Evaporator air inlet not blocked by cargo Enroute Inspections To help prevent damage to the cargo complete the following enroute inspection every four...

Page 36: ...to cool cargo to correct temperature Refer to load log history Look for above temperature load records properly pre cooled cargo compartment length of time on road etc Correct as required Continue mon...

Page 37: ...corrected C CA AU UT TI IO ON N R Ri is sk k o of f I In nj ju ur ry y The unit can start and run automatically any time the unit is turned on Turn the unit On Off switch Off before doing inspections...

Page 38: ...Circuit Breaker 25 ft 50 ft 75 ft 230 Vac 1 50 60 16 amp AWG16 1 5mm2 AWG16 1 5mm2 AWG16 1 5mm2 115 Vac 1 50 60 20 amp AWG14 2 5mm2 AWG14 2 5mm2 AWG14 2 5mm2 I Im mp po or rt ta an nt t Failure to use...

Page 39: ...urs Inspect Check Service These Items Check unit for any active alarms Inspect exterior of evaporator and condenser Inspect evaporator air inlet and outlet for blockage dirt debris cargo etc Inspect c...

Page 40: ...r drive belt condition and tension 20 and 50 Models Only Check return air temperature sensor calibration Check suction pressure regulator setting 20 30 50 MAX Models Only Inspect evaporator and conden...

Page 41: ...18 OP EN 41 Warranty Terms of the Thermo King North American Vehicle Powered Truck Unit Limited Warranty are available on request from your Thermo King Dealer Please reference document TK 51350 Propos...

Page 42: ...oved 2 S ST TA AN ND DB BY Y C CO OM MP PR RE ES SS SO OR R 20 and 50 Models only Nameplate located on standby compressor body Standby compressor is located inside the Condenser 3 E EN NG GI IN NE E D...

Page 43: ...Thermo King North American Service Directory available from any Thermo King dealer If you are unable to reach a dealer then call the Toll Free Emergency Cold Line Number 888 887 2202 The answering se...

Page 44: ...s truck bodies buses air shipboard containers and railway cars since 1938 For more information visit www thermoking com or www tranetechnologies com Thermo King has a policy of continuous product and...

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