ultima ultra multi-temp ultra xl extra optima with standard micro prior ...

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9will switch depending on if the unit has pulled down tosetpoint yet. During pulldown the controllingtemperature is from the active probe. When not inpulldown mode the controlling temperature is supply airplus an integrator error which is based on the selectedcontrolling (active) probe Again the 60_F exceptionoccurs. When not in pulldown mode and the setpoint is>= 60_F the active probe is used for control andintegration .There are three possible modes for UltraFresh 2 control.These are heat, cool and null. To enter COOL the controltemperature must be greater than or equal to 1_Cabovesetpoint. To exit cool and enter NULL the controltemperature must be less than 0.8_C abovesetpoint.Toexit NULL and enter HEAT the control temperaturemust be more than or equal to 1_C below setpoint and toexit heat and enter NULL the control temperature mustbe less than 0.8_ below setpoint. (See Figure 1-21).Null mode operates with a pulse, which combines coolingor heating with a null valve combination over a 10 secondperiod. The null valve portion of the period is defined asHR1, HR3, and HR4 de-energized and HR2 energized.The calculated pulse percentage determines the type ofpulse needed and the percentage of the 10 second periodto pulse. At the end of each period the type of pulse andpercentage is updated.When in the null mode: The HEAT and COOL LCD’s onthe microprocessor display will blank out. The heat andcool lights (on light bar) will flash back and forth every 10seconds or less.UltraFresh 2 only operates when: Setpoint is in theperishable range above10_F ( --- 12_C) and the unit is setfor continuous run operation.If ambient is 10_F ( --- 12_C) andthe supply air probe is present/valid, and supplytemperature is setpoint, (afterhaving been unloaded), allow the normal temperaturecontrol algorithm to control the unloaders. If the supplyair probe is not present/not valid, then use the return airtemperature and energize the unloader solenoids at(setpoint --- 5_C), allowing a 3_C bandabovesetpointbefore de-energizing the unloaders.There is a delay of 10 seconds between de-energizing oneunloader to de-energizing the other unloader under alloperating conditions excluding engine starting.1.13 ULTRA FREEZE TEMPERATURE CONTROLWITH SOFTWARE 3.11 OR HIGHERFor frozen setpoints, a modified Ultra Fresh 2temperature control is used to keep the unit from overcooling. Ultra Freeze operates the same as Ultra Fresh 2except as noted in this section. Ultra Freeze control willbe used anytime a frozen setpoint is selected in bothdiesel and standby units, in both continuous andstart/stop operation. When in standard multi-temptemperature control Ultra Freeze is used to control themaincompartmentifithasafrozensetpointselected.Ultra Freeze operates independently of the setting ofCNF-15.IfUltraFreezeisactivetheUltraFresh2unloadercooling logic is not invoked.a. Ultra Freeze OffsetIn continuous run a ---3_F offset is added which will forcethe unit to control to 3_F below setpoint. When the unitdemands high speed cool and the high speed is delayedthe unit will be allowed to run 6 cylinder low speed cool.b. Ultra Freeze Start/StopIn start/stop operation the unit’s control will not have the3_F offset and will control to setpoint by cycling the uniton and off according to the standard frozen modestart/stop startup and shutdown logic. The exception tothis is when a low battery voltage or low engine coolanttemperature defeats the normal shutdown logic, then theUltra Freeze logic will control to the 3_F below setpointoffset.c. Ultra Freeze Main Compartment Heat ModeThe main compartment is limited to 2 cylinder low speedheat. If either or both of the remote compartments areenabled and the main compartment goes to heat mode theremotes are immediately forced to null mode, no heat orcool.d. Ultra Freeze Main Compartment / RemotesControlWhen the main compartment is either heating or coolingThe remote compartments can override both the speedand unloaders. If a remote goes to cooling the unloaderswill be de-energized. If the remote then requests highspeed the unit will go to high speed with no delays. If aremote goes to heat mode the unloaders will becontrolled by the main compartment, (unless anotherremote is cooling), however the unit will go to high speed.1-29 62-02461
1.1.1 HEAT/COOL MODEFALLINGTEMPERATUREHIGH SPEEDLOADED COOLLOW SPEEDLOADED COOLLOW SPEEDUNLOADED COOL+2.0_C (+3.6_F)+1.5_C (+2.7_F)+1.0_C (+1.8_F)RISINGTEMPERATUREHIGH SPEEDLOADED COOLLOW SPEEDLOADED COOLLOW SPEEDUNLOADED COOLPULSEDNULL BANDLOW SPEEDUNLOADED HEATLOW SPEEDLOADED HEATHIGH SPEEDLOADED HEAT+0.5_C (+0.9_F)SET POINT--- 0.5_C ( --- 0.9_F)--- 1.0_C ( --- 1.8_F)--- 1.5_C ( --- 2.7_F)--- 2.0_C ( --- 3.6_F)PULSEDNULL BANDLOW SPEEDUNLOADED HEATLOW SPEEDLOADED HEATHIGH SPEEDLOADED HEATFigure 1-21 . UltraFresh 2 Temperature Control Operating Sequence62-024611-30
Page 7: LIST OF ILLUSTRATIONS (CONT’D)Fig
Page 10 and 11: 9SECTION 1DESCRIPTION1.1 INTRODUCTI
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: 1.1.1 HEAT/COOL MODEIf the battery
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
Page 64 and 65: 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
Page 70 and 71: 4.5 SERVICING STANDBY CLUTCH (NDM)T
Page 72 and 73: 4.7 PUMPING THE UNIT DOWN ORREMOVIN
Page 74: . 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
Page 81 and 82: 10. Dehydrate and evacuate the syst
Page 83 and 84: 4.23 REPLACING THE CONDENSER/ EVAPO
Page 85 and 86: 10. Install clutch on fan shaft ass
Page 87 and 88: To check Phase Sequence Module:a. V
Page 89 and 90:
4.31 CONTROLLER SENSOR CHECKOUTAn a
Page 91 and 92:
M8 x 20 mm lg(6 Req’d) 18 ft-lbs
Page 93 and 94:
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
Page 99 and 100:
Figure 5-3. NDA-94 Electrical Schem
Page 101 and 102:
Figure 5-4. NDM-94A EURO Electrical
Page 103 and 104:
Figure 5-5. NDM-94 (EURO) Electrica
Page 105 and 106:
Figure 5-6. NDM-94A Electrical Sche
Page 107 and 108:
Figure 5-7. NDM-94 Electrical Schem
Page 109 and 110:
Figure 5-8. NDM-94A --- 230v Phase
Page 111 and 112:
Figure 5-9. NDM-94 230v Phase Rever
Page 113 and 114:
Figure 5-10. NDM-94A --- 380v Phase
Page 115 and 116:
Figure 5-11. NDM-94 380v Phase Reve
Page 117 and 118:
Figure 5-12. NDA, NDM and NDX Elect
Page 119 and 120:
Figure 5-13. NDA, NDM and NDX Elect
Page 121 and 122:
SECTION 6MULTI-TEMP OPERATION AND S
Page 123 and 124:
6.5 MULTI-TEMP REFRIGERANT CIRCUITT
Page 125 and 126:
energized at 2.5_C above setpoint.
Page 127 and 128:
6.13 5KW GENERATOR MAINTENANCEThe 5
Page 129 and 130:
Table 6-4. 2 Compartment Reversible
Page 131 and 132:
Table 6-5. 3 Compartment Reversible
Page 133 and 134:
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
Page 143 and 144:
6-23 62---02461Figure 6-13 Electric
Page 145 and 146:
IndexIRemote Evaporator, 6-5Introdu
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