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9SECTION 1DESCRIPTION1.1 INTRODUCTIONTable 1-1. Model ChartRefrigerantEngine SpeedModels ElectricR-22 R-404A Compressor EngineHigh Low StandbyLB KG LB KGULTIMANDX-93D --- --- 26 11.8 05G 41 cfm CT4-134-DI 2200 1475 ---PHOENIX ULTRANDA-93A 05G 41 cfm 1900 ---NDA-93A Euro --- --- 26 11.8 05G 37 cfm 1700 ---NDM-93A Euro05G 37 cfm 1700 380V 50hzNDA-94A 05G 41 cfm CT4-134-TV TV 1900 1350 ---NDA-94A Euro05G 37 cfm1700---26 11.8 --- ---NDM-94A05G 37 cfm 1900 230V 60hzNDM-94A Euro 05G 37 cfm 1700 380V 50hzPHOENIX ULTRA XLNDA-93D 05G 41 cfm 1900 ---NDM-93D --- --- 26 11.8Euro05G 37 cfm 1700 380V 50hzNDA-94D 05G 41 cfm CT4-134-DI 1900 1350 ---NDM-94D05G 37 cfm1900230V 60hz26 11.8 --- ---NDM-94D05G 37 cfm 1700 380V 50hzEuroEXTRANDA-93E ---NDM-93E --- --- 26 11.8 05G 37 cfm CT4-114-TV TV 1700 1350 230V 60hzNDM-93E Euro380V 50hzNDA-94E ---NDM-94E 26 11.8 --- --- 05G 37 cfm CT4-114-TV TV 1700 1350 230V 60hzNDM-94E Euro380V 50hzOPTIMANDA-93B --- --- 21 9.53---05K CT4-91-TVO TVO 2200 1650NDA-94B 21.5 9.75 --- ------This manual contains Operating Data, Electrical Dataand Service Instructions for the refrigeration units listedin Table 1-1.WARNINGBeware of V-belts and belt driven components asthe unit may start automatically. Beforeservicing unit, make sure the Run - Stop switch isin the STOP position. Also disconnect thenegative battery cable.a. Model NDAThe unit is a one piece, self-contained, fully charged,pre-wired, refrigeration/heating “nosemount” dieselpowered unit for use on insulated trailers to maintaincargo temperatures within very close limits. Themodel/serial number plate is located inside of the unit ontherearframeasshowninFigure1-4.The evaporator fits into a rectangular opening in theupper portion of the trailer front wall. When installed,the evaporator section is located inside the trailer; andthe condensing section is outside and on the front of thetrailer.The condensing unit consists of an engine---compressordrive package, condenser fan, condenser coil, radiatorcoil, control panel, relay module, refrigerant controls,piping, wiring, defrost air switch, and associatedcomponents.The evaporator assembly consists of an evaporator coil,evaporator fan, expansion valve, two defrost thermostats1-1 62-02461
1.1.1 HEAT/COOL MODE(termination switches). The location of the thermostatsare shown in Figure 1-9. The return air sensor is alsoshowninFigure1-9.Heating is accomplished by circulating hot gas directlyfrom the compressor to the evaporator coil. Four electricsolenoid valves control the refrigerant circuit to operatethe heating/cooling system.Automatic evaporator coil defrosting is initiated byeither sensing the air pressure drop across the coil with adifferential air switch or with the defrost timer in themicroprocessor.The control door and relay module include manualswitches, microprocessor, ammeter, fuses, andassociated wiring. Also, the unit is equipped with aremote light bar as standard equipment. It is mountedseparately on the front roadside corner of the trailer.The temperature controller is a microprocessor solidstate controller (Refer to section 1.10). Once thecontroller is set at the desired temperature, the unit willoperate automatically to maintain the desiredtemperature within very close limits. The control systemautomatically selects high and low speed cooling or highand low speed heating as necessary to maintain thedesired temperature within the trailer.The refrigeration compressor used (Refer to Table 1-1) isequipped with Varipowr as standard equipment.Varipowr is used as a compressor capacity control tounload the compressor during periods of reduced loads.This provides closer temperature control, reducespotential for top freezing and reduces power required tooperate the compressor; thus reducing fuel consumption.The engine (Refer to Table 1-1) gives excellent fueleconomy and has easy starting characteristics. Theengine is equipped with spin-on lube oil and fuel oil filtersforeasierfilterchanges.NOTEThroughout this manual, whenever the “left” or“right” hand side of the engine is referred to, it isthe side as viewed from the flywheel end of theengine.The diesel engine drives the compressor directly througha nylon drive gear and adapter. The adapter also includesa V-belt sheave which drives the clutch/gearbox. Thecondenser/evaporator fan shaft is driven with a V-beltfrom the clutch/gearbox. A separate V-belt from theclutch/gearbox drives the alternator.Electrical power for the control system and for chargingthe batteries is provided by the 12 vdc alternator.Also the auto start/stop feature is standard equipment.The auto start/stop operation provides automatic cyclingof the diesel engine, which in turn offers an energyefficient alternative to continuous operation of theengine with control of temperature by alternate coolingand heating of the supply air (evaporator outlet air).b. Model NDMThe model NDM is similar to the model NDA except thatit contains a standby electric motor, standby motorcontactor and a receptacle for a power plug.The diesel engine drives the compressor directly througha centrifugal clutch, except during standby operation.During standby operation, the centrifugal clutch isdisengaged from the compressor sheave. The compressoris then belt driven by the standby motor.Table 1-2. Electric Standby Motor Data50HZ 60HZHorsepower 12hp 15hpVoltage 380 230Full Load Amps 17.6 35.6Lock Rotor Amps 137 298RPM 2935 3550230V CIRCUIT380V CIRCUITc. ModelNDMwithPhaseSequenceModuleSome NDM have a Phase Sequence Module (SeeFigure 1-12 & Figure 4-29). This phase sequence sensingsystem provides a safe method of automatically providingcorrectly phased 3 phase power to the unit. This featureallows the user to connect the unit to any three phasepower source of correct voltage and frequency withoutregard to the phase sequence of the power source.This module contains two electrically identical sectionsof circuitry, each connected to a different pair of phases.Depending on the phase sequence occurring at themodule inputs (X1, X2, H4 and 46), relay PR-1 or PR-2will be energized as required to effect correct phasing ofpower to unit.d. Model NDXThe model NDX is similar to the model NDA except thatthe evaporator extends into the trailer. The condensercoil/subcooler and radiator are combined. The clutch ismoved from gearbox to fan shaft.62-024611-2
Page 7: LIST OF ILLUSTRATIONS (CONT’D)Fig
Page 12 and 13: 91123234564758961. Condenser Pressu
Page 14 and 15: 91. Condenser Pressure ControlSolen
Page 16 and 17: 91. King Valve2. Hot Gas Solenoid V
Page 18 and 19: 9165341. Evaporator Fan2. Expansion
Page 20 and 21: 943112 2200V/50hz230V/60hz380V/50hz
Page 22 and 23: MODELUltima, Phoenix Ultra,Ultra XL
Page 24 and 25: . Perishable Cooling Unloader Contr
Page 26 and 27: 1.9.4 Hot Gas Bypass Unloadera. Maj
Page 28 and 29: 91.10 MICROPROCESSOR CONTROLLERCOOL
Page 30: Manual Glow OverrideThe auto start
Page 33 and 34: 1.1.1 HEAT/COOL MODE1.10.7ALARM DIS
Page 35 and 36: 1.1.1 HEAT/COOL MODE1.10.10 DEFROST
Page 37 and 38: 1.1.1 HEAT/COOL MODEIf the battery
Page 39 and 40: 1.1.1 HEAT/COOL MODEFALLINGTEMPERAT
Page 41 and 42: 1.1.1 HEAT/COOL MODE1.14.2DataLink
Page 43 and 44: 1.1.1 HEAT/COOL MODE1.15 BATTERY CH
Page 46 and 47: 1.17 REFRIGERANT CIRCUIT DURINGHEAT
Page 48 and 49: 9EXTERNAL EQUALIZEREXPANSIONVALVEBU
Page 50 and 51: 3. Press the FUNCTION CHANGE key un
Page 52 and 53: Thedefrostmodemaybeinitiatedbythree
Page 54 and 55: ModeTable 2-2. Relay OperationDEPer
Page 56 and 57: INDICATION/TROUBLEPOSSIBLE CAUSESRE
Page 58 and 59: INDICATION/TROUBLE3.3.5Defrost Cycl
Page 60 and 61:
INDICATION/TROUBLEPOSSIBLE CAUSESRE
Page 62 and 63:
. Every 2000 Hour Maintenance --- N
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4.3 ENGINE SERVICE AND COMPONENTS4.
Page 66 and 67:
4.3.5 Engine Crankcase BreatherThe
Page 68 and 69:
421. Evaporator/Condenser Fan V-Bel
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4.5 SERVICING STANDBY CLUTCH (NDM)T
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4.7 PUMPING THE UNIT DOWN ORREMOVIN
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. Run the unit in cooling for ten m
Page 77 and 78:
. Solenoid Coil ReplacementNOTEThe
Page 79 and 80:
4.17 CHECKING AND REPLACING HIGHPRE
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10. Dehydrate and evacuate the syst
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4.23 REPLACING THE CONDENSER/ EVAPO
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10. Install clutch on fan shaft ass
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To check Phase Sequence Module:a. V
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4.31 CONTROLLER SENSOR CHECKOUTAn a
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M8 x 20 mm lg(6 Req’d) 18 ft-lbs
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Table 4-6. R-404A Temperature---Pre
Page 95 and 96:
Figure 5-1. NDA-94A Electrical Sche
Page 97 and 98:
Figure 5-2. NDA-94A & NDA-94B Elect
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Figure 5-3. NDA-94 Electrical Schem
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Figure 5-4. NDM-94A EURO Electrical
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Figure 5-5. NDM-94 (EURO) Electrica
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Figure 5-6. NDM-94A Electrical Sche
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Figure 5-7. NDM-94 Electrical Schem
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Figure 5-8. NDM-94A --- 230v Phase
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Figure 5-9. NDM-94 230v Phase Rever
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Figure 5-10. NDM-94A --- 380v Phase
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Figure 5-11. NDM-94 380v Phase Reve
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Figure 5-12. NDA, NDM and NDX Elect
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Figure 5-13. NDA, NDM and NDX Elect
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SECTION 6MULTI-TEMP OPERATION AND S
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6.5 MULTI-TEMP REFRIGERANT CIRCUITT
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energized at 2.5_C above setpoint.
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6.13 5KW GENERATOR MAINTENANCEThe 5
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Table 6-4. 2 Compartment Reversible
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Table 6-5. 3 Compartment Reversible
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6-13 62---02461Figure 6-8. Electric
Page 135 and 136:
6-15 62---02461Figure 6-9. Electric
Page 137 and 138:
6-17 62---02461Figure 6-10. Electri
Page 139 and 140:
6-19 62---02461Figure 6-11. Electri
Page 141 and 142:
6-21 62---02461Figure 6-12 Electric
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6-23 62---02461Figure 6-13 Electric
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IndexIRemote Evaporator, 6-5Introdu
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