Carrier Transicold Maxima 2 refrigeration unit Operator's Manual
The Maxima 2 provides long, trouble-free performance when properly operated and maintained. The checks outlined in the manual help to minimize over-the-road problems. The unit is engineered to provide automatic operation, heating, cooling, and defrost. The unit can be operated in Road or Standby modes, with a diesel engine or electric motor. The Maxima 2 also features a 4-stage thermostat and automatic start/stop functionality.
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MAXIMA 2 OPERATOR’S MANUAL This guide has been prepared for the operator of Carrier Transicold trailer refrigeration units. It contains basic instructions for the daily operation of the refrigeration unit as well as safety information, troubleshooting tips, and other information that will help you to deliver the load in the best possible condition. Please take the time to read the information contained in this booklet and refer to it whenever you have a question about the operation of your Carrier Transicold unit. Your refrigeration unit has been engineered to provide long, trouble--free performance when it is properly operated and maintained. The checks outlined in this guide will help to minimize over--the--road problems. Maintenance program will also help to control operating costs, increase the unit’s working life, and improve performance. Carrier Transicold has an on--going product quality upgrade policy. As a result, specifications are liable to change without notice. 2 CONTENTS Page UNIT IDENTIFICATION SAFETY FEATURES MICROPROCESSOR CONTROLLER DESCRIPTION PRE--TRIP INSPECTION UNIT OPERATION FAULT ALARM DISPLAY FUSES SOLID-STATE CONTROLLER DESCRIPTION PRE--TRIP INSPECTION UNIT OPERATION FUSES TROUBLESHOOTING UNIT MAINTENANCE UNIT MAINTENANCE SCHEDULE DESCRIPTION OF SERVICE REQUIREMENTS BELTS FILTERS PRODUCT LOADING RECOMMENDED TRANSPORT TEMPERATURES STANDBY OPERATION GUIDELINES MANUFACTURER INFORMATION “A.T.P. EUROPE” REGULATION EXTRACT EMERGENCY ROAD SERVICE 4 6 8 10 G B 10 18 20 22 24 25 25 30 32 38 40 41 43 44 45 47 48 51 52 53 57 59 3 UNIT IDENTIFICATION Each Maxima 2 refrigeration unit is identified by means of a nameplate fastened to the unit. On the Maxima 2, this nameplate is inside the curb--side side door of the unit. This nameplate identifies the complete model number of the unit, the serial number, the refrigerant charge and quantity, and the date the unit was placed in service. If a problem occurs, please refer to the information on this plate, and make a note of the model and serial number before calling for assistance. This information will be needed when you contact a technician or Carrier Transicold Service Engineer so that he or she may properly assist you. 4 UNIT IDENTIFICATION G B 5 SAFETY Your Carrier Transicold refrigeration unit has been designed with the safety of the operator in mind. During normal operation, all moving parts are fully enclosed to help prevent injury. During all pre--trip inspections, daily inspections, and problem troubleshooting, you may be exposed to moving parts; please stay clear of these moving parts when the unit is in operation and when the main power switch is in the Run (On) position. The evaporator and condenser are made of finned tubes. The fins can cause injury on contact with skin. It is recommended to wear protective gloves during all handling operations. During operation, certain components such as the exhaust pipe, discharge outlet, and cooling circuit radiator can become extremely hot. During routine service operations, wear protective gloves. WARNING : When the buzzer sounds the unit will start 30 seconds later. AUTO START/STOP (OPTION FOR ELECTROMECHANICAL) Your refrigeration unit is equipped with Auto--Start/Stop, a valuable fuel--saving feature. When the unit is set for Auto--Start/Stop operation it may start at any time and without warning. When performing any check of the refrigeration unit (e.g. checking belt tension, or the oil level), make sure that the main power switch is in the Stop position. To ensure your unit is fitted with the START/STOP system, check for the presence of switch 16 (see page 25). ENGINE COOLANT The engine, as with all diesel engines, is equipped with a pressurized cooling system. Under normal operating conditions, the coolant in the engine and radiator is under high pressure and is very hot. Contact with hot coolant can cause severe burns. Do not remove the cap from a hot radiator; if the cap must be removed, do so very slowly in order to release the pressure without spraying. 6 SAFETY REFRIGERANTS The refrigerant contained in the refrigeration system of your unit can cause frostbite, severe burns, or blindness when in direct contact with the skin or eyes. For this reason, and because of legislation regarding the handling of refrigerants during system service, whenever your unit requires service of the refrigeration system, we recommend that you contact your nearest Carrier Transicold authorized repair facility for service. BATTERY This unit is equipped with a lead--acid type battery. The battery normally vents small amounts of flammable hydrogen gas. Keep any flame, any lighted object (cigarette etc.) or any source of sparks away from the battery elements. A battery explosion can cause serious physical harm and/or blindness. 7 G B FEATURES The Maxima 2 is equipped with a diesel engine and an electric motor. If necessary, the unit can operate as a heater simply by using the thermostat: its control is the same as for the refrigeration cycle. The START/STOP system automatically cycles the unit on and off during engine operation, regulating refrigeration or heating output to meet the temperature requirements of the products being transported. - Diesel engine: Diesel -- 4 cylinders -- water--cooled -- reinforced crankshaft bearings -- perfect balance at all speeds -- low noise level -water--oil safety switch -- large--volume oil pan. - Electric motor : Multi--voltage - 4--stage thermostat : Four operating modes for temperature set--point > --12C: High--speed cool Low--speed cool Low--speed heat High--speed heat Two operating modes for temperature set--point < --12C: High--speed cool Low--speed cool - Controller : The unit can be delivered fitted either with a microprocessor controller or solid--state controller. - Charge alternator Maxima 2 14 VDC, 50 A OPERATING PRINCIPLE The operation of this self--contained unit is automatic. 8 FEATURES - In Road mode (engine operation) The diesel engine runs continuously. During temperature pulldown it runs at high speed. Down to --12C, the box temperature is regulated is in low--speed heat; under --12C, a safety cut--out prevents any possibility of heating: this means that as soon as the set--point temperature has been reached the unit will run in low--speed cool. NOTE: If a fixed negative temperature selection is required lower than --12C (e.g. --15C or --20C or --25C), please contact your local Carrier dealer or service. - In Standby mode WITH START / STOP The thermostat controls unit shut--down as soon as the set--point temperature has been reached. WITHOUT START / STOP The unit will run continuously : cool / heat for setpoint above --12C only cool for setpoint below --12C - Defrost The unit is equipped with an automatic defrost. Triggering of the defrost cycle is controlled by a differential pressure air switch; shut--down of the defrost cycle is controlled by two defrost termination thermostats. The defrost cycle can also be controlled manually. During the defrost cycle the evaporator blower is off. 9 G B MICROPROCESSOR CONTROLLER DESCRIPTION The microprocessor controlled features of this unit provide the most reliable control system currently available. It is also designed to be the easiest to use, offering great flexibility in control, yet minimal user input for normal operation -- a true “set it and forget it” design. (1) (2) (3) DISPLAY WINDOWS (1) : shows set-point, box temperature, operating mode, alarm displays, as well as data on the unit itself (battery voltage, water temperature etc...). FUNCTION CHANGE KEY Enables access to unit programming functions (see p. 16). 10 MICROPROCESSOR CONTROLLER ARROWS KEYS These enable modification of the set-point. Press the Up and Down arrow keys until the requisite set-point is displayed on the left-hand side of the screen. When the correct set-point is displayed, press the ENTER key to validate. The ARROW KEYS also enable modification of unit functions, and scrolling of FUNCTION and UNIT DATA. ENTER KEY This confirms changes entered concerning unit functions. The key enables validation of a change in set-point made using the Arrow-keys. If the Enter Key is not used, the set-point reverts to its previous value. The ENTER key also enables validation of a change made to a function parameter. If the Enter Key is not used, the function reverts to its previous parameterization. MAIN ON/OFF SWITCH (RUN/STOP) Controls unit operation. In the Run position (2), the unit starts up according to the operating mode previously specified (Road or Standby). The set-point is the last set-point entered via the keyboard. ROAD OPERATION When this switch is set to the ENGINE position, the unit operates in Road mode (diesel engine) when the unit was previously operating in Standby mode. 11 G B MICROPROCESSOR CONTROLLER STANDBY OPERATION When this switch is set to the STANDBY position, the unit operates in Standby mode (electric) when the unit was previously operating in Road mode (the unit must be connected to a suitable electricity supply). Pilot light 9 is On (see page 14). STANDBY POWER ON PILOT LIGHT MANUAL DEFROST The MANUAL DEFROST key switches the unit to defrost mode. It is not usually necessary to defrost the unit manually, since it is fitted with a defrost timer and defrost air switch. Manual defrost may be necessary if ice accumulates on the evaporator after frequency opening the trailer door in damp weather conditions (the DF message is displayed on-screen). PRETRIP The PRETRIP key initiates the pretrip check of all normal operating modes for Road operation. The temperature inside the trailer body must be lower than 3C á1C. 12 MICROPROCESSOR CONTROLLER AUTOMATIC START/STOP CONTINUOUS Switches the operating mode of the unit from Automatic Start/Stop to continuous operation in Road or Standby modes. When the unit is set to Automatic Start/Stop, it operates in this mode until the box temperature reaches the set-point, then stops (after operating for the minimum run time). See page 16 (Function Parameters -- FN3) until a heating or cooling cycle becomes necessary once again (after minimum off time -- FN2). In continuous run mode, the unit automatically cycles from heating to cooling modes as required to maintain the box temperature at the set-point. In the case where the latter is lower than --12C, the unit does not heat, but continuously operates in low speed cooling mode. When set to continuous run mode, the unit only shuts off when the Run/Stop switch is moved to the Stop position, or a unit fault occurs. UNIT DATA UNIT DATA Pressing this key scrolls a display of the various operating conditions on-screen, for example the temperature of the engine coolant, or the battery voltage. A more detailed description of the function of this key is given later in this chapter. 13 G B MICROPROCESSOR CONTROLLER FAULT This light goes On when a fault has been detected at unit level (see Alarm Display table page 22). Important : If the screen display is blank, check the position of the RUN switch (2) on the box. CONTROL RELAY BOX Located on the left-hand side of the unit. Ammeter Manual Glow Crank 14 Fault light Standby Power On light (9) MICROPROCESSOR CONTROLLER UNIT DATA The unit Data Key provides access to unit data listed below. TO DISPLAY UNIT DATA The unit data list can be scrolled through by pressing the UNIT DATA Key. The list will advance by one with each key push; or press the UNIT DATA Key once and use the UP or DOWN ARROW Keys to scroll through the list faster. Press the ENTER Key to display the data for 30 seconds. UNIT DATA CODE ENGLISH CD1 SUCT Suction pressure DATA CD2 ENG Engine hours CD3 WT Engine temperature CD4 RAS Return air temperature CD5 *SAS Supply air temperature CD6 *REM Remote air temperature CD7 ATS Ambient temperature CD8 EVP Future expansion CD9 CDT Not used CD10 BATT Battery voltage Standby hours CD11 SBY CD12 MOD V Future expansion CD13 REV Software revision CD14 SERL Serial number low CD15 SERU Serial number upper CD16 2RA Future expansion CD17 3RA Future expansion CD18 MHR1 Maintenance hour meter 1 CD19 MHR2 Maintenance hour meter 2 CD20 SON Switch on hour meter * SAS and REM are options. SAS is displayed when the SUP PROBE Function is selected. REM is displayed when the REM PROBE Function is selected. 15 G B MICROPROCESSOR CONTROLLER The Function Settings below can be changed through the FUNCTION CHANGE key. TO CHANGE A FUNCTION WARNING : BEFORE MODIFYING ANY FUNCTION, BE AWARE OF CONSEQUENCES. READ CAREFULLY FUNCTION PARAMETERS HERE BELOW. 1. Press the FUNCTION CHANGE KEY until the Function you want change appears on the Display. 2. Press ENTER 3. Press the UP or DOWN ARROW Key until the Function Setting you want appears on the Display. 4. Press ENTER FUNCTION PARAMETERS CODE ENGLISH FN0 DEFR AVAILABLE SELECTIONS FN1 ON HIGH AIR High air flow FN1 OFF NORM AIR Normal air flow FN2 OFF T Minimum off-time 10,20, 30, 45 or 90 mn On-time 4 or 7 min. Defrost interval 1.5, 3, 6, or 12 hr FN3 ON T FN4 A REM PROBE Controlling Probe-Return air FN4 B SUP PROBE Controlling Probe-Supply air (above12C) FN5 DEGREES C OR F 16 Temperature Unit (C or F) MICROPROCESSOR CONTROLLER FUNCTION PARAMETERS CODE ENGLISH AVAILABLE SELECTIONS FN6 ON TIME STRT Maximum Off-time 30 min FN6 OFF TEMP STRT Temperature based restarting (after minimum Off time) FN7 MOP STD FN8 2SET Set-point adjustment 2nd compartment FN9 3SET Set-point adjustment 3rd compartment Not used FN10 ON AUTO OP Auto Start operation FN10OFF MAN OP Manual Start operation FN11 T RANGE Out-of-Range 2, 3, or 4C G B Code vs English = Code or English Display Format Manual Glow Override = Normal or Add 30 seconds Alarm RST = Alarm Reset Required Alarm CLR = No alarm active 17 MICROPROCESSOR CONTROLLER PRE-TRIP INSPECTION The pre--trip inspection should be performed before picking up any load. This inspection is essential to anticipate and help minimize the possibility of “over--the--road” problems. These checks take only a few minutes. 1. Place the unit’s main power switch to the Stop position. 2. Fuel -- Drain any water and impurities from the sump of the refrigeration unit fuel tank by opening the drain--cock located on the bottom of the tank. Close the valve when only pure fuel emerges. Check the fuel level in the tank, ensuring that the fuel supply is adequate for unit operation. Refuel if necessary. 3. Belts -- Check the belt tension by depressing the belt with your thumb, near the center of the longest free run of each belt. Under moderate pressure each belt should deflect approximately 6 mm to 13 mm (1/4 inch to 1/2 inch). If the belts deflect more than this they should be tightened (loose belts may slip, generating heat and reducing belt life). If the belts are too tight they should be loosened; tight belts can reduce bearing life. 4. Battery -- On units equipped with serviceable batteries, the level of the electrolyte in each of the cells should be checked. If the level is low, distilled water should be added to the correct level. Most units, however, are equipped with low or maintenance--free batteries; these should be inspected to ensure that the connections are clean and tight, and the battery hold--down should be checked for tightness. 18 MICROPROCESSOR CONTROLLER 5. Engine Oil -- The engine oil should be checked last, since oil has to drain out of the block and into the oil pan to obtain a correct reading. Remove the dip--stick (1), wipe it clean and re-insert it fully into the engine block. Once again, remove the dip--stick and observe the oil level; it should be somewhere between the ”full” and ”add” marks. If it is below the add mark, add oil until the level is correct. G B 1 6. Coolant level -- Visually inspect the coolant level in the coolant bottle (located on the upper left-hand side of the unit). 7. Over--all Unit inspection -- Visually inspect the entire unit for leaks, loose bolts, frayed, loose, or broken wires, etc. The radiator and condenser coils of the unit should be free of dirt, bugs, cardboard, or any other debris that may obstruct airflow across the coils. The evaporator (located inside the body) should be free of debris also, especially stretch--wrap, which is often used during transport to prevent cargo from shifting. 8. Truck body -- The body should be inspected prior to loading. Check the door and vent seals for damage and wear. Inspect the entire interior and exterior of the body to detect any damage, including the inner and outer skins of the body. Damage to the insulation may compromise the unit’s ability to maintain the product temperature by increasing the amount of heat gain in the box. 9. Pretrip -- Initiate a pretrip by pressing the PRETRIP Key. 19 MICROPROCESSOR CONTROLLER UNIT OPERATION STARTING THE UNIT Complete the Pre-trip inspection described in the previous section. Road Operation Place the RUN/STOP (2) switch to the RUN position. If the unit was previously operating in STANDBY mode, place the switch to the ENGINE position (3). Under normal operating circumstances, this is all that is required to start the unit. The microprocessor initiates a unit pretrip check, initiates preheating for a period determined by the temperature of the engine coolant, and automatically starts the unit. Standby Operation Check that the unit is connected to a suitable electricity supply. Place the RUN/STOP (2) switch to the RUN position, and the Standby switch to STANDBY (3). The unit now operates on Standby. See the table on page 52 for information about the appropriate wiring. MANUAL START 1. Place the switch (2) to RUN to control the unit. 2. Place the unit preheat and manual start switch to mode [diesel engine start-up (MGC)] -- see on Control Relay Box page 14. GLOW : Preheat CRANCK : Start-up UNIT SHUT-DOWN Place the RUN/STOP (2) switch to the STOP position to shut down the unit. 20 MICROPROCESSOR CONTROLLER CHANGING THE SET-POINT Press the UP ARROW or DOWN ARROW key until the desired set-point is displayed on the left side of the cab command display window. When the arrow key is released, the set-point will begin flashing, this is a sight that you must press the ENTER key to confirm the new set-point. Otherwise, the set-point will revert to the previously entered set-point. G B DEFROST - Defrost is fully automatic but can be manually initiated if required, as long as the box temperature is equal to or lower than +3C. - It is recommended to carry out a defrost cycle one hour after loading, particularly when transporting goods such as fresh meat etc ... - The automatic defrost cycle is controlled by an air switch or by a defrost timer (preset 1,5 -- 3 -- 6 and 12 hours) using hot gas from the compressor. - During the defrost cycle, the evaporator fan is stopped. - Defrost termination is automatically controlled by two “klixon” thermostats. - During defrost, the Defrost light is On. 21 MICROPROCESSOR CONTROLLER FAULT ALARM DISPLAY AND SAFETY FEATURES Display will alternate between an alarm message and the normal display whenever any of the failures listed below occur. NOTE Whenever the fault light is on, check display for fault message. Reset the micro to start the unit. Press FUNCTION CHANGE key, the UP/DOWN arrow until ALARM RST is displayed. Press enter to clear alarm. Alarm CLR will now be displayed and unit will restart. Other method to reset : move RUN/STOP switch to STOP. Unit resets and will start when RUN/STOP switch is moved to run position. ALARM DISPLAY °= FAULT LIGHT ON CODE ENGLISH DESCRIPTION AL0 ENG OIL ° Low Oil Pressure AL1 ENG HOT ° High coolant Temperature AL2 HI PRESS ° High Discharge Pressure AL3 START FAIL ° Start failure AL4 LOW BATT ° Low battery voltage AL5 HI BATT ° High battery voltage AL6 DEFRFAIL AL7 ALT AUX ° No Alternator Auxiliary Output AL8 STARTER ° Starter Motor Fault Defrost Override AL9 RA SENSOR ° AL10 SA SENSOR Supply Air Sensor Fault AL11 WT SENSOR Coolant temperature sensor 22 Return Air Sensor Fault MICROPROCESSOR CONTROLLER ALARM DISPLAY °= FAULT LIGHT ON CODE ENGLISH AL12 CDT DESCRIPTION Not used AL13 CD SENSOR Not used AL14 SBY MOTOR ° ° Standby motor overload G B Fuse open AL15 FUSE BAD AL17 DISPLAY AL18 SERVICE 1 Maintenance Hour meter 1 AL19 SERVICE 2 Maintenance Hour meter 2 AL20 RAS OUT ° AL21 2RA OUT ° Remote compartment 2 Out-of-Range AL22 3RA OUT ° Remote compartment 3 Out-of-Range Display Main Compartment Out-of-Range WARNING : AL0 (ENG OIL) could come up if alternator is bad connected. 23 MICROPROCESSOR CONTROLLER FUSES The fuses which protect the circuits of the control system are located in the box on the left-hand side of the unit. The fuses are accessed by opening the door (2 screws) and then the control box panel (2 screws). F9 F8 F6 F5 F4 F3 F10 Designation Power (Amps) F1 Main fuse 80 A F2 Fuel heater fuse (option) 20 A F3 Road / Standby fuse 25 A F4 Solenoïd fuse 15 A F5 Auto/Start and Out-of-Range fuse 7.5 A F6 Fault light fuse 5A F8 Phase detector fuse 1A F9 Microprocessor fuse 5A F10 Water pump fuse 24 5A SOLID STATE CONTROLLER DESCRIPTION 10 1 9 2 G B 3 4 5 8 7 6 17 15 12 16 13 14 11 25 SOLID STATE CONTROLLER CONTROL PANEL FUNCTIONS Standby hourmeter For maintenance purposes, indicates the number of operating hours of the electric motor. 1. 2. + -- Battery charge ammeter 3. Malfunction light Lights up in the event of a start--up problem in Start/Stop mode. 4. Standby operation light 5. Defrost light Lights up when the unit is in defrost mode, enabling the ice which has formed on the evaporator coil to melt. DEFROST 6. HEAT 7. COOL 26 Heating mode light Lights up when the unit is in heat mode. The box temperature rises to reach the required set--point temperature, if set--point is equal to or greater than --12C (10F). Cooling mode light Lights up on the control panel when the unit is in cool mode. The box temperature pulls down to set--point. SOLID STATE CONTROLLER 8. ENGINE AUTOSTART Auto- Start light Lights up when the unit is in Start--Stop mode. Box temperature display 9. BOX TEMPERATURE Diesel engine hourmeter For maintenance purposes, indicates the number of operating hours for the diesel engine. 10. 11. Temperature switch The temperature selector enables selection of the set--point at which the cargo is to be maintained. Just turn the selector until the arrow indicates the required temperature. 12. 13. SAS Supply air temperature sensor (SAS) RAS Return air temperature sensor (RAS) Defrost/Glow switch When the switch is held in the UP position, this indicates that the engine glow plugs are energized : this enables the combustion chamber to reach a sufficiently high temperature for the fuel to ignite when the starter operates. When the switch is held in the Down position, the unit switches to Defrost mode (when the evaporator temperature is sufficiently low). 27 G B SOLID STATE CONTROLLER 14. R U N STOP Start/Run/Stop switch When the switch is held in the UP position, this actuates the starter. When released the switch moves to the central position (RUN). In this position the unit operates in Road or Standby mode depending on the mode selected with the Road/Standby switch (15). 15. Road/Standby switch When the switch is held in Down position, the unit operates in Road (diesel engine) mode. When the switch is held in the UP position, the unit operates in Standby (electric motor) mode. For this latter mode, the unit must be connected to the proper power network. 16. Start/Stop For automatic operation, place the switch in the UP position. Pilot light (8) lights up. For continuous run in diesel engine or electric drive, place the switch on NORMAL. NORMAL 17. 28 Unit Reset Push to reset the control circuit. SOLID STATE CONTROLLER CONTROL RELAY BOX Located on the left-hand side of the unit. G B 29 SOLID STATE CONTROLLER PRE-TRIP INSPECTION The pre--trip inspection should be performed before picking up any load. This inspection is essential to anticipate and help minimize the possibility of “over--the--road” problems. These checks take only a few minutes. 1. Place the unit’s main power switch to the Stop position. 2. Fuel -- Drain any water and impurities from the sump of the refrigeration unit fuel tank by opening the drain--cock located on the bottom of the tank. Close the valve when only pure fuel emerges. Check the fuel level in the tank, ensuring that the fuel supply is adequate for unit operation. Refuel if necessary. 3. Belts -- Check the belt tension by depressing the belt with your thumb, near the center of the longest free run of each belt. Under moderate pressure each belt should deflect approximately 6 mm to 13 mm (1/4 inch to 1/2 inch). If the belts deflect more than this they should be tightened (loose belts may slip, generating heat and reducing belt life). If the belts are too tight they should be loosened; tight belts can reduce bearing life. 4. Battery -- On units equipped with serviceable batteries, the level of the electrolyte in each of the cells should be checked. If the level is low, distilled water should be added to the correct level. Most units, however, are equipped with low or maintenance--free batteries; these should be inspected to ensure that the connections are clean and tight, and the battery hold--down should be checked for tightness. 30 SOLID STATE CONTROLLER 5. Engine Oil -- The engine oil should be checked last, since oil has to drain out of the block and into the oil pan to obtain a correct reading. Remove the dip--stick (1), wipe it clean and re--insert it fully into the engine block. Once again, remove the dip--stick and observe the oil level; it should be somewhere between the ”full” and ”add” marks. If it is below the add mark, add oil until the level is correct. G B 1 6. Coolant level -- Visually inspect the coolant level in the coolant bottle (located on the upper left-hand side of the unit). 7. Over--all Unit inspection -- Visually inspect the entire unit for leaks, loose bolts, frayed, loose, or broken wires, etc. The radiator and condenser coils of the unit should be free of dirt, bugs, cardboard, or any other debris that may obstruct airflow across the coils. The evaporator (located inside the body) should be free of debris also, especially stretch--wrap, which is often used during transport to prevent cargo from shifting. 8. Truck body -- The body should be inspected prior to loading. Check the door and vent seals for damage and wear. Inspect the entire interior and exterior of the body to detect any damage, including the inner and outer skins of the body. Damage to the insulation may compromise the unit’s ability to maintain the product temperature by increasing the amount of heat gain in the box. 31 SOLID STATE CONTROLLER UNIT OPERATION - The operation of this self--contained unit is automatic. - During temperature pulldown, the diesel engine operates at high speed. ROAD OPERATION Before starting-up : - Set the thermostat (11) to the requisite temperature. - Set sensor (12) to RAS for a negative temperature, or to SAS for a positive temperature. Start-up without the start/stop system : - Check that switch (16) is the “NORMAL” position. - Place switch (15) in the Road position . - Place switch (14) on RUN (central position). - Preheat for approximately 30 seconds by holding switch (13) in the UP position on Glow . - Start unit by placing switch (14) in the switch (13) in the glow position position (while holding . - After starting the engine, release switch (14) and hold switch (13) in the UP position for a few seconds longer. 32 SOLID STATE CONTROLLER - Check that Cool : Heat : Defrost : the pilot lights come on as follows : 7 6 6 and 5 Start-up with the start/stop system : - Place switch (15) in the Road position G B - Place switch (16) in the UP position - Place the switch (14) on “RUN” (middle position), the Auto-Start (8) goes on. The unit automatically preheats and starts. - Check that the ammeter (2) indicates the battery charge. - Check that the following lights are On : Cooling : 7 Heating : 6 Defrost : 6 and 5 - The alarm light (3) goes on if a start-up problem occurs (see instruction decal on control box). If the alarm light goes On, place the ON/OFF switch to the Stop position and repeat the whole operation. If the malfunction persists, the unit will try to start up three times and then will shut down completely. The alarm light will go On once again. Place the switch to the Manual position, and follow the procedure indicated in the section above entitle “Start-up without the Start/Stop system”. If there is any difficulty in starting-up, check that : - Preheating is sufficient. - The Preheat switch (13) remains in the Up position start-up. during - The unit is correctly supplied with fuel. 33 SOLID STATE CONTROLLER Shutting-down the unit : - Place switch (14) in the “STOP” position. STANDBY OPERATION Start-up : - Check the type of three-phase current and power output available (see the table on page 52). - Connect the unit to the power network. - Place switch (15) in the Standby position . - Start the unit up by placing switch (14) in the RUN (central position). - The unit is fitted with a phase detector which inhibits engine start-up if the phases are reversed. In the latter case an alarm sounds. Place the RUN/STOP switch in the STOP position. Disconnect the power plug and switch the phases in the socket using a screwdriver. If you have any difficulty in starting-up the unit, check : - That the box temperature (9) is not equal to set-point. - That time-delayed temperature regulation is not On, by actuating thermostat (11) and stopping the unit using switch (14) to cancel the time-delay. - That the three-phase power supply and voltage are correct. - That the fuses have not blown in the control box. 34 SOLID STATE CONTROLLER UNIT SHUT-DOWN Place the RUN/STOP switch (14) in the STOP position to shut down the unit. WARNING NEVER DISCONNECT THE EXTENSION CORD WITHOUT PLACING SWITCH (14) IN THE STOP POSITION. G B DEFROST - Defrost is fully automatic but can be manually controlled if required, as long as the box temperature is equal to or lower than +3C. - It is recommended to carry out a defrost cycle one hour after loading, particularly when transporting goods such as fresh meat etc ... - The automatic defrost cycle is controlled by an air switch using hot gas from the engine. - During the defrost cycle, the evaporator fan is stopped. - Defrost termination is automatically controlled by two “klixon” thermostats. - During defrost, the Defrost light is On. HEATING In Road mode (Engine operation) - Heating is controlled by the thermostat. - Heating takes place in high-and low-speed heat modes. - Temperature regulation takes places in high-and low-speed heat modes. In Standby mode (Electric operation) - Temperature regulation is obtained by the unit cycling off when the set-point has been reached. 35 SOLID STATE CONTROLLER START/STOP SYSTEM (OPTION FOR ELECTROMECHANICAL) : The system works as follows : - Engine preheat and start-up is automatic. - When the temperature selected with the thermostat has been reached, the system shuts the diesel engine down. - Engine shut-downs can be programmed to last 15, 30 or 60 minutes. Shut-down times will be modified depending on the isothermal insulation of the box, the ambient temperature and the cargo. The shut-down time is pre-programmed in the plant to 15 minutes. The user should determine whether this setting is appropriate for his type of cargo and the insulation of the bodywork (all adjustments are to be made by a Carrier Transicold technician). Caution : During unit shut-downs, the evaporator fans also stop. Only use this operating mode for products which tolerate shut-downs of this kind. - At the end of the programmed shut-down time, if the box temperature is more than 1,7C outside the set-point range, the system restarts the engine for a minimum of 10 minutes. - The start/stop system comprises several safety devices which ensure it operates correctly. These check : the battery status, the temperature of the engine water, the minimum run time. 36 SOLID STATE CONTROLLER TEMPERATURE REGULATION In Road mode (Engine operation) - Down to --12C, the box temperature is regulated in low-speed heat and low-speed cool; under --12C, a safety cut-out prevents any possibility of heating: this means that as soon as the set-point temperature has been reached the unit will operate in low speed cool. - The continuous operation of the fans even during temperature regulation ensures a precise, uniform temperature of the cargo transported. In Standby mode - Temperature regulation is obtained by the unit cycling off when the set-point has been reached. 37 G B SOLID STATE CONTROLLER FUSES The fuses which protect the circuits of the control system are located in the box on the left-hand side of the unit. The fuses are accessed by opening the door (2 screws) and then the control box panel (3 screws). F2 38 F3 F4 F5 F7 SOLID STATE CONTROLLER Designation Power (Amps) F1 Main fuse 20 A F2 Road/Standby fuse 7,5 A F3 Speed/Clutch/Hot gas solenoid fuse 15 A F4 Fuel pump fuse 5A F5 Water pump fuse 5A F7 Fuel heater fuse (option) 25 A F8 Phase detector fuse (not shown) 1A RR Run relay SR Speed relay HR Heat relay GPR G B Glow plug relay RA Run solenoid SBR Standby relay BPR By-pass relay DRO Defrost time relay BPR Fuel Heater relay (option) RALT Alternator relay ASR Alternator starter relay 39 TROUBLESHOOTING Everything possible has been done to ensure that your unit is the most reliable, trouble--free equipment available on the market today. If, however, you run into problems, the following section may be of assistance. If you do not find the trouble that you have experienced listed below, please call your Carrier Transicold dealer for assistance. General Problems UNIT WON’T CRANK, BY THE STARTER CHECK BATTERY CONDITION. CHECK BATTERY CONNECTIONS. CHECK ALL FUSES. CHECK RESET BUTTON (ELECTROMECHANICAL) CHECK ALTERNATOR CONNECTIONS. UNIT WON’T START CHECK FUEL LEVEL. CHECK ALL FUSES. UNIT WON’T RUN CHECK FUEL LEVEL. CHECK ENGINE OIL LEVEL. UNIT DIES CHECK BELTS. CHECK ENGINE OIL LEVEL. CHECK COOLANT LEVEL. CHECK FUEL LEVEL. CHECK ALL FUSES. UNIT NOT COOLING PROPERLY DEFROST UNIT. CHECK EVAPORATOR FOR AIRFLOW RESTRICTION. CHECK CONDENSER FOR AIRFLOW RESTRICTION. CHECK BODY FOR DAMAGE OR AIR LEAKS. 40 UNIT MAINTENANCE Engine oil : The oils recommended for use in your refrigeration unit must comply with the American Petroleum Institute’s (API) SG/CD rating. The use of oil of the proper weight (viscosity) is also essential. The following chart indicates the SAE Weight Rating of the oil to be used in various climates: G B ou ou ou 41 UNIT MAINTENANCE The following oils are accepted for use in Europe with the Maxima 2 unit. RECOMMENDED OILS CARRIER AGIP ANTAR BP ELF FIAT FINA HAFA IGOL IMPERATOR LABO MOBIL OPAL ORLY POLAROIL RENAULT TEXACO TOTAL SHELL UNIL YACCO CARRIER TD+15W- 40 SIGMA TURBO SHPD 15W--40 GRAPHITE R 15W--40 VANELLUS C3 EXTRA 15W--40 VANELLUS FE 15W30 MULTIPERFORMANCE4D 15W--40 PERFORMANCE TROPHY 15W--40 URANIA TURBO 15W--40 KAPPA LDO 15W--40 KAPPA TD PLUS 15W--40 KAPPA EXTRA 15W--40 DETERGENTE 4DM 15W--40 STRADEX 900 ECO 15W--40 SYNTHIDEX ECO 15W--40 RALLYE TURBO 4E 15W--40 RALLYE TURBO 4E LD 15W--40 RAFF SUPER HPDO 15W--40 MEGAMAXI 15W--40 DELVAC SHC 15W--40 DELVAC 1400 SUPER OPALGET D 500 15W--40 TURBO 2002 15W--40 POLATRUCK 15W--40 KMX 2 PLUS 15W--30 KMX 2 PLUS 15W--40 MV5 “EUROPE” URSA SUPER TD 15W--40 RUBIA TIR MAX 15W40 MYRINA TX 15W--40 MYRINA T 15W--30 SUPER ROC 3D 15W--40 TURBO DX 15W--40 SM 4D + 15W--40 The above oil equivalents are based on the recommendations contained in the suppliers’s technical literature. 42 UNIT MAINTENANCE In addition to the above service requirements, please adhere to the following : The engine oil should be changed at least once per year, even if the engine has not run the necessary number of hours. The coolant (anti-freeze should be replaced after a maximum of two years. G B UNIT MAINTENANCE SCHEDULE For the most reliable operation and for maximum life, your unit requires regular maintenance. This includes oil and filter changes, fuel and air filter replacement, coolant replacement, belts etc... The maintenance should be performed on the following schedule: Required Service MAXIMA 2 With Bypass Oil filters A A A B A C A B A A B C A Hours 400 1500 3000 4500 6000 7500 9000 10500 These maintenance schedules are based on the use of approved oils and regular pre-trip inspections of the unit. Descriptions of the type of service required are found on the next page. 43 UNIT MAINTENANCE DESCRIPTION OF SERVICE OPERATIONS Service Operations Drain engine oil and change oil air filter. Grease control rods of diesel engine. Replace oil filter cartridge and by--pass filter cartridge. Replace primary and secondary fuel cartridge. Clean fuel pump filter. Check level of coolant, refrigerant and battery electrolyte. Drain water in fuel tank. Check alternator charge. Check thermostat operation. Check manual/automatic defrost operation. Service A Check operation of solenoid. Check “klixon” cut--out. Check drainage of defrost water. Check motor speed in high--speed/low--speed. Check bolts/screws are correctly tightened. Check unit fastening into box. Check belts and belt tighteners. Check pilot lights and switches. Check tightness of lines and connections. Check relays, electrical connections and hoses. Clean condenser and radiator. Grease blower and hinges. Service B Replace belts. Check and adjust rocker arms. Replace bearings and brushes of 12 VDC alternator. Service C Check and adjust clutch. Calibrate injectors 140 kg/cm3. 44 UNIT MAINTENANCE BELTS F G A B D E G 5 4 H B E 2 B C E F E Number Quantity 1 2 3 4 5 2 1 1 1 1 G B 3 C D 1 A A Diesel engine - compressor E Condenser blower B Electric motor (right-hand pulley) F Condenser blower C Charge alternator G Evaporator blower clutch D Electric motor (left-hand pulley) H Belt tightener Too little belt tension cause slippage and excessive belt wear. Too much tension shortens belt and bearing life. Belt deflection should be equal to belt thickness. Performance Parts belts are canvas--surfaced, smooth and synchronous. Properly adjusted belts give long lasting and efficient service (refer to maintenance schedule). Important: During intervention on twin mounted belts, replace IMPERATIVELY both belts and make sure they both originate from the same package. (Example: replacing belts, ref. 1). 45 UNIT MAINTENANCE REPLACING BELTS - Remove belt 3, untighten the tensioners of the electric motor. Replace the belts (1 and 2) coupling the compressor motor to the electric motor: - Untighten the 6 screws of the plate (C) on the motor flywheel. - Push the plate towards the compressor in the direction of the arrow (fig. 2). - Change the belts in the space thus obtained. A = Engine B = Compressor C = Flywheel plate & % $ 19mm 46 UNIT MAINTENANCE FILTERS Rep. 1 2 3 4 Designation Oil filter By-pass oil filter Fuel filter Oil bath air cleaner G B 4 2 3 1 For code numbers consult the corresponding spare parts manual. 47 PRODUCT LOADING Proper air circulation in the truck body, air that can move around and through the load, is a critical element in maintaining product quality during transport. If air cannot circulate completely around the load, hot spots or top--freeze can occur. The use of pallets is highly recommended. Pallets, when loaded so air can flow freely through the pallets to return to the evaporator, help protect the product from heat passing through the floor of the trailer. When using pallets, it is important to refrain from stacking extra boxes on the floor at the rear of the trailer, because this will cut off the airflow. Product stacking is another important factor in protecting the product. Products that generate heat, fruits and vegetables for example, should be stacked so the air can flow through the product to remove the heat; this is called “air stacking” the product. Products that do not create heat, meats and frozen products, should be stacked tightly in the center of the trailer. All products should be kept away from the sidewalls of the body, allowing air to flow between the body and the load; this prevents heat filtering through the walls from affecting the product. It is important to check the temperature of the product being loaded to ensure that it is at the correct temperature for transport. The refrigeration unit is designed to maintain the temperature of the product at the temperature at which it was loaded; it was not designed to cool a warm product. OPTIONS FOR INSULATED BODIES - Mobile partition The mobile partition must be placed at a minimum distance of 4000 mm from the evaporator. - Ducting of evaporator air outlet. Ventilation ducts must never be covered. 48 PRODUCT LOADING SOME ADVICE Before loading - Pre--cool the inside of the insulated body by lowering the temperature for about 15 minutes. - Remove the humidity inside the body by defrosting manually. This can be done only when the inside temperature is 3C or less. G B When loading - This is to be carried out with the unit stopped. - It is recommended to open doors as little as possible to avoid the intake of hot air and humidity. - Select the temperature using the thermostat in accordance with the goods transported. - Check the internal temperature of the goods being loaded (using a probe thermometer). - Take care not to obstruct the air intakes on the evaporator section and the ventilation ducts. - Leave a free space of about: 6 to 8 cm between load and frontwall, 20 cm between the top of the load and the roof, between the floor and the load (gratings, pallets). - Do not forget to close the rear ventilation flaps. - Before closing the doors, check your load once more and see that nobody is shut inside the trailor. 49 PRODUCT LOADING NOTE If used stationary, it is recommended to place the box in the shade. Important : Never leave your unit too long without operating. 50 RECOMMENDED TRANSPORT TEMPERATURES Below are some general recommendations on product transport temperatures and operating modes for the unit. These are included for reference only and should not be considered preemptive of the set--point required by the shipper or receiver. More detailed information can be obtained from your Carrier Transicold dealer. Product Set-point Operating Mode* 15C Continuous C to +6C Continuous Fresh fish under bed of ice recommended +2C Auto-Start/Stop Fresh meat C Auto-Start/Stop Fresh seafood C Auto-Start/Stop or continuous Dairy products +2C to +6C Auto-Start/Stop or continuous Block of ice --C to --12C Auto-Start/Stop Frozen fruits and vegetables --25C Auto-Start/Stop Frozen meats and seafood --25C Auto-Start/Stop Ice cream --29C Auto-Start/Stop Bananas Fresh fruits and vegetables * During delivery cycles that include frequent stops and door openings, it is recommended that the unit always be operated in the continuous run mode to help ensure product quality. It is recommended to shut down the unit during the periods when the body doors are open, in order to maintain the correct temperature of the cargo. 51 G B STANDBY OPERATION GUIDELINES For safe, reliable operation in Standby mode, it is important to consider the following guidelines: - Never plug the unit in to the power source with the main switch in the RUN position. The main switch should always be in the STOP position when connecting the unit to the power source. - The extension cord (max. length 8 m) and fuses used to connect the unit to the power network must comply with the following table and the legislation currently applicable in the place of work: Unit aM 200/240/3/ 50 Hz aM 350/415/3/ 50 Hz Maxima 2 50 A 30 A Standardized extension cable H.070RNF 220 Volts 380 Volts 10 mm2 6 mm2 aM: Motor starting fuse. The unit connection cable must be fitted with a ground connection. The cable must be connected to earth. Recommendation: On a three--phase network, use a differential protection for each plug. Before performing maintenance operations on the refrigeration unit, check it is disconnected from the power supply, that the main switch is in the STOP position, and that the unit can not restart automatically during the operation. Operations on the 220V or 380V supply for the unit must only be carried out by authorized personnel. Note: If operating on a 220V supply, check that the unit is correctly fitted with the suitable plug and overload relay. The user is liable for ensuring that the above measures are taken. 52 MANUFACTURER INFORMATION WARRANTY Always update the service chart which is to be found inside the front cover. This manual refers to the standard model. Some options may not appear in it, and in such cases you are requested to consult our Technical Services. Carrier Transicold constantly seeks to improve the quality of its products and therefore reserves the right to modify them without prior notice. INSTALLATION During assembly and routine service operations. Access to the unit located on the bulkhead of the semi--trailer may involve certain risks. TAKE EVERY SAFETY MEASURE WHEN ACCESSING THE UNIT (e.g.: standard ladders, running board with railing, safety belt etc.) Installation of this unit requires no special knowledge of refrigeration. To fit the unit onto the vehicle body, simply slide the evaporator unit into the opening in the front panel, and secure using the bolts/screws provided. Advice : When handling the unit, use suitable lifting gear and the lifting hooks supplied with the installation package; remove the hooks once the unit has been installed. Note: The unit should not protrude out of the body. BATTERY Maintenance : Never leave a unit more than a month without running it. In the case of a long standstill, charge the battery independently. 53 G B MANUFACTURER INFORMATION Before performing any welding on the chassis, make sure the battery of the vehicle and the alternator, and all other electronic systems (microprocessor) are disconnected. Never try to start the vehicle with a booster: this can damage the electronic components in the unit or on the vehicle. SAFETY INSTRUCTIONS 1. Check that all mounting bolts are well tightened and suitable for use. 2. When you drill holes in the unit or in the body of the vehicle, be careful not to pierce the refrigeration tubes or the electrical wiring. 3. When you are working next to the batteries (condenser and evaporator) be careful not to cut yourself on the sharp edges. 4. When the unit is running, keep your hands away from belts and fan motors. 5. Never close the discharge valves of the compressor when the unit is running. 6. In case of repair, only use manometer by--pass hoses which are in a good condition and avoid any contact with belts, pulley or fans. 7. The refrigerant liquid must be handled with great care. 8. Next to a flame the refrigerant liquid gives off a phosgene gas which has an unpleasant smell and irritates the lungs. 9. Never use a flame to heat up a closed cooling circuit. 10. The cooling system must be handled with great care. When liquid refrigerant enters the atmosphere, it evaporates and freezes everything it contacts. 54 MANUFACTURER INFORMATION First aid in case of frost--bite: a) Cover up the frost--bitten part. b) Quickly warm up the frost--bitten part by dipping it into lukewarm water (not hot). c) If you do not have water, wrap the injured part in a clean cloth. d) If refrigerant fluid has been splashed into your eyes, rinse them immediately with clean water; as a precaution, you are recommended to have a medical examination as well. 11. Cooling oil Synthetic types - Avoid prolonged or repeated contact with the skin. - Wash carefully after handling. REMARKS ABOUT SAFETY “Low pollution” engine The TRIVORTEX--type indirect injection system minimizes exhaust fume pollution. NEVER START THE ENGINE IN A CLOSED ROOM, EXHAUST GAS IS POISONOUS. It is colorless and odorless and created by the incomplete combustion of hydrocarbons. Exhaust gas is poisonous; breathing it in induces drowsiness and may lead to loss of consciousness. The following symptoms indicate exhaust gas has been inhaled: - Blackout - Intense headache - Sudden weakness and sleepiness - Vomiting - Muscular contractions - Beating temples 55 G B MANUFACTURER INFORMATION If you feel one of the above mentioned symptoms, go out and breathe fresh air. Maintenance operations should be done at the recommended intervals on your equipment. Check the exhaust gas system to avoid gas inhalation. If you notice a noise or modification of the exhaust system immediately stop the engine and call your sales service center for checking and repair. WARNING : The unit starts automatically: keep away from belts, pulleys and fans. 56 “A.T.P. EUROPE” REGULATION EXTRACT (Date: March 1974) Approval of vehicles intended for the carriage of perishable goods. Before putting a refrigerated vehicle into service, it is necessary to have it approved by the Regional Health Department. CHARACTERISTICS OF VEHICLES USED FOR CARRYING PERISHABLE GOODS; REFRIGERATION UNIT. The refrigeration unit is an insulated unit with a cooling system which makes it possible, with a mean outside temperature of +30C, to lower the temperature inside the empty body and to maintain this low temperature in the following way: CLASS A Refrigeration unit furnished with a cooling system whereby a temperature between +12C and 0C inclusive can be chosen. CLASS B Refrigeration unit furnished with a cooling system whereby a temperature between +12C and --10C inclusive can be chosen. CLASS C Refrigeration unit furnished with a cooling system whereby a temperature between +12C and --20C inclusive can be chosen. The cooling capacity of a unit is determined by a test carried out in one of the approved testing stations and ratified by an official report. Note: The “K” factor of bodies intended to be classified as C must be equal to or lower than 0.4 W/m2 C. 57 G B “A.T.P. EUROPE” REGULATIONS EXTRACT SIGNS, IDENTIFICATION MARKS AND PLATES TO BE ATTACHED TO REFRIGERATION UNITS Refrigeration Plate This reference must be followed by identification marks according to the following list: Standard refrigeration unit Class A FNA Reinforced refrigeration unit Class A FRA Reinforced refrigeration unit Class B FRB Reinforced refrigeration unit Class C FRC In addition to the above identification marks, the date (month and year) of expiry of the approval certificate must be indicated. Example: FRC 7--1997 (7 = month (June) 1997 = year) Very important Regularly check the expiry date of the approval certificate. During transport, the approval certificate or provisional certificate should be shown on request of qualified agents. To have an insulated unit approved as a refrigeration unit, an application to modify the approval certificate should be sent to the regional health office. 58 EMERGENCY ROAD SERVICE At Carrier Transicold we’re working hard to give you complete service when and where you need it. That implies a worldwide network of dealers and an available emergency service. These service centers are manned by factory--trained service personnel and backed by extensive parts inventories to ensure you of prompt repair. Should you encounter a unit problem with your refrigeration unit during transit, follow your company’s emergency procedure or contact the nearest Carrier Transicold service center. Consult the directory to locate the service center nearest you. This directory may be obtained from your Carrier Transicold dealer. If you are unable to reach a service center, call Carrier Transicold’s 24--hour Action Line; In Europe, call +33 (0)2.35.79.12.12 for 24--hour assistance. When calling, please have the following information ready for fastest service: - Your name, the name of your company, and your location. - A telephone number where you can be called back. - Refrigeration unit model number and serial number. - Box temperature, set--point and product. - Brief description of the problem you are having, and what you have already done to correct the problem. We will do everything we can to get your problem taken care of and get you back on the road. 59 G B ">
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Key Features
- Automatic operation
- Heating & Cooling
- 4-stage thermostat
- Automatic Start/Stop
- Diesel engine & Electric motor operation
Frequently Answers and Questions
What are the safety precautions I should take when operating the Maxima 2 unit?
As with all diesel engines, the engine is equipped with a pressurized cooling system. Under normal operating conditions, the coolant in the engine and radiator is under high pressure and is very hot. Contact with hot coolant can cause severe burns. Do not remove the cap from a hot radiator; if the cap must be removed, do so very slowly in order to release the pressure without spraying. The refrigerant contained in the refrigeration system can cause frostbite, severe burns, or blindness when in direct contact with the skin or eyes. For this reason, and because of legislation regarding the handling of refrigerants during system service, whenever your unit requires service of the refrigeration system, we recommend that you contact your nearest Carrier Transicold authorized repair facility for service.
How do I perform a pre-trip inspection on the Maxima 2?
The pre--trip inspection should be performed before picking up any load. This inspection is essential to anticipate and help minimize the possibility of “over--the--road” problems. These checks take only a few minutes. 1. Place the unit’s main power switch to the Stop position. 2. Fuel -- Drain any water and impurities from the sump of the refrigeration unit fuel tank by opening the drain--cock located on the bottom of the tank. Close the valve when only pure fuel emerges. Check the fuel level in the tank, ensuring that the fuel supply is adequate for unit operation. Refuel if necessary. 3. Belts -- Check the belt tension by depressing the belt with your thumb, near the center of the longest free run of each belt. Under moderate pressure each belt should deflect approximately 6 mm to 13 mm (1/4 inch to 1/2 inch). If the belts deflect more than this they should be tightened (loose belts may slip, generating heat and reducing belt life). If the belts are too tight they should be loosened; tight belts can reduce bearing life. 4. Battery -- On units equipped with serviceable batteries, the level of the electrolyte in each of the cells should be checked. If the level is low, distilled water should be added to the correct level. Most units, however, are equipped with low or maintenance--free batteries; these should be inspected to ensure that the connections are clean and tight, and the battery hold--down should be checked for tightness. 5. Engine Oil -- The engine oil should be checked last, since oil has to drain out of the block and into the oil pan to obtain a correct reading. Remove the dip--stick (1), wipe it clean and re-insert it fully into the engine block. Once again, remove the dip--stick and observe the oil level; it should be somewhere between the ”full” and ”add” marks. If it is below the add mark, add oil until the level is correct. 6. Coolant level -- Visually inspect the coolant level in the coolant bottle (located on the upper left-hand side of the unit). 7. Over--all Unit inspection -- Visually inspect the entire unit for leaks, loose bolts, frayed, loose, or broken wires, etc. The radiator and condenser coils of the unit should be free of dirt, bugs, cardboard, or any other debris that may obstruct airflow across the coils. The evaporator (located inside the body) should be free of debris also, especially stretch--wrap, which is often used during transport to prevent cargo from shifting. 8. Truck body -- The body should be inspected prior to loading. Check the door and vent seals for damage and wear. Inspect the entire interior and exterior of the body to detect any damage, including the inner and outer skins of the body. Damage to the insulation may compromise the unit’s ability to maintain the product temperature by increasing the amount of heat gain in the box.
How do I start the Maxima 2 unit in Road mode?
Place the RUN/STOP switch to the RUN position. If the unit was previously operating in STANDBY mode, place the switch to the ENGINE position. Under normal operating circumstances, this is all that is required to start the unit. The microprocessor initiates a unit pretrip check, initiates preheating for a period determined by the temperature of the engine coolant, and automatically starts the unit.
How do I start the Maxima 2 in Standby mode?
Check that the unit is connected to a suitable electricity supply. Place the RUN/STOP switch to the RUN position, and the Standby switch to STANDBY. The unit now operates on Standby. See the table on page 52 for information about the appropriate wiring.
Questions & Answers
M M S
What does Carrier Transicold error code AL2 indicate?
AL2 indicates high discharge pressure.
How to reset a Carrier Transicold unit after receiving an AL2 error?
Try resetting the unit by switching the RUN/STOP switch to STOP, then back to RUN. If the error persists, contact a qualified technician.