Maxx Cold MXX-23F Use and Care Manual
Contents
1. COLD Upright Chiller amp Freezer Service Installation and Care Manual Please read this manual completely before attempting to install or operate this equipment Notify carrier of damage Inspect all components immediately See page 2 11 ul 10111 Hu IMPORTANT INFORMATION READ BEFORE USE PLEASE SAVE THESE INSTRUCTIONS Service and Installation Manual CONTENTS RECEIVING amp INSPECTING EOUIPMEINT 5 dig paren Ros odia E EERE 2 SPEGIPICA IONS TET 3 INSTALLATION D 4 5 MAINTENANCE eden au 7 WIRING DIAGRAM 2255542255 4 5 E mus m tepE T 9 All rights reserved Reproduction without written permission is prohibited SEHIAL NUMBER INFORMATION The serial number of all self contained refrigerators and freezers is located inside the unit on the left hand side near the top on the wall Always have the serial number of your unit available when calling for parts or service This manual covers standard units only If you have a custom unit consult the customer service department at the number listed on the last page RECEIVING AND INSPECTING THE EQUIPMENT Even though most equipment is shipped crated care should be taken during unloading so the equipment is not damaged while being moved into the building 1 Visually inspect the exter2. return to the room temperature display Service and Installation Manual 1 1 Function of LEDS FUNCTION 3 9 Gompressor enabled Flashing Programming Phase flashing with Anti shart cycle delay enabled Flashing Programming Phase flashing with Drip time in progress fesa _ S aM Flashing Fans delay after defrost in progress An temperature alarm happened 2 MAIN FUNCTIONS 2 1 HOW TO SEE THE SETPOINT NEM 1 Push and immediately release the SET key the display will show the set point value 2 Push and immediately release the SET key or wait for 5 seconds to display the sensor value again 2 2 HOW TO CHANGE THE SETPOINT 1 Hold the SET key for more than 2 seconds to change the set point value 2 The value of the set point will be displayed and the t LED starts blinking 3 To change the set value push the ow key within 10s 4 To set a new point value push the SET key again or wait 10s 2 3 HOW TO START A MANUAL DEFFROST Hold the key for more than 2 seconds and the manual defrost will start p eat 2 4 HOW TO LOCK THE KEYBOARD 1 Hold the and keys for more than 3s 2 he POF message will be displayed and the keyboard will be locked At this point it will be possible only to see the set point or the MAX or Min temperature stored 3 If a key is pressed more than 3s the POF message will be displayed N 2 5 HOW TO UNLOCK THE KEYBOARD Hold the and Y key
3. so full that air cannot circulate The refrigerated air is discharged at the top rear of the unit It is important to allow for proper air flow from the top rear to the bottom of the unit Obstructions to this air flow can cause evaporator coil freeze ups and loss of temperature or overflow of water from the evaporator drain pan The shelves have a rear turn up on them to prevent this However bags and other items can still be located to the far rear of the cabinet Air is brought into the evaporator coil with fans mounted to the front of the coil Outside cabinet Be sure that the unit has access to ample air Avoid hot corners and locations near stoves and ovens It is recommended that the unit be installed no closer than 2 from any wall with at least 12 of clear space above the unit Leveling A level cabinet looks better and will perform better because the doors will line up with the frames properly Use a level to make sure the unit is level from front to back and side to side Units supplied with legs will have adjustable bullet feet to make the necessary adjustments If the unit is supplied with casters no adjustments are available Ensure the floor where the unit is to be located is level Stabilizing All models are supplied with casters for your convenience ease of cleaning underneath and for mobility It is very important however that the cabinet be installed in a stable condition with the front wheels locked while in use Should
4. 23R EVA f ie RA TURE SENSOR ROOM TEMP E 0009000906 3 oS x THERMOSTAT DISPLAY JUNCTION BOX JI PLUG EVAPORATOR FAN 10 Service and Installation Manual WIRING DIAGRAM MODEL MXX 23F 0535 11146510 11152811 11
5. be increased Clean the condenser with a vacuum cleaner or stiff brush If extremely dirty a commercial grade condenser cleaner may be required Stainless Steel Care and Cleaning To prevent discoloration of rust on stainless steel several important steps need to be taken First we need to understand the properties of stainless steel Stainless steel contains 70 80 iron which will rust It also contains 12 3096 chromium which forms an invisible passive film over the steels surface which acts as a shield against corrosion As long as the protective layer is intact the metal is still stainless If the film is broken or contaminated outside elements can begin to breakdown the steel and begin to form rust of discoloration Proper cleaning of stainless steel requires soft cloths or plastic scouring pads NEVER USE STEEL PADS WIRE BRUSHES OR SCRAPERS Service and Installation Manual MAINTENANCE Cleaning solutions need to be alkaline based or non chloride based Any cleaner containing chlorides will damage the protective film of the stainless steel Chlorides are also commonly found in hard water salts and household and industrial cleaners If cleaners containing chlorides are used be sure to rinse and dry thoroughly Routine cleaning of stainless steel can be done with soap and water Extreme stains or grease should be cleaned with a non abrasive cleaner and plastic scrub pad It is always good to rub with the grain of the steel Ther
6. e are also stainless steel cleaners available which can restore and preserve the finish of the steels protective layer Early signs of stainless steel breakdown can consist of small pits and cracks If this has begun clean thoroughly and start to apply stainless steel cleaners in attempt to restore the passivity of the steel Gasket Maintenance Gaskets require regular cleaning to prevent mold and mildew build up and also to keep the elasticity of the gasket Gasket cleaning can be done with the use of warm soapy water Avoid full strength cleaning products on gaskets as this can cause them to become brittle and prevent proper seals Do not use sharp tools or knives to scrape or clean the gasket which could possibly tear the gasket and rip the bellows Never use an acid based cleaning solution Many food products have an acidic content which can deteriorate the finish Be sure to clean the stainless steel surfaces of ALL food products Gaskets can easily be replaced and don t require the use of tools or authorized service technicians The gaskets are Dart style and can be pulled out of the grove in the door and replaced by pressing the new one back into place Doors Hinges Over time and with heavy use door hinges may become loose If the door is beginning to sag tighten the screws that mount the hinge brackets to the frame of the unit If the doors are loose or sagging this can cause the hinge to pull out of the frame which may damage bot
7. h the doors and the door hinges Drain Maintenance Each unit has a drain located inside the unit which removes the condensation from the evaporator coil and evaporates it into an external condensate evaporator pan Each drain can become loose or disconnected from moving or bumping the drain If you notice excessive water accumulation on the inside of the unit be sure the drain tube is connected from the evaporator housing to the condensate evaporator drain pan If water starts to collect underneath the unit you may want to check the condensate evaporator drain tube to be sure it is still located inside the drain pan The leveling of the unit is important as the units are designed to drain properly when on a level surface If your floor is not level this can also cause drain problems Be sure all drain lines are free of obstructions because this can cause water to back up and overflow the drain pans Service and Installation Manual WIRING DIAGRAM MODEL MXX 23R CIRCUIT DIAGRAM POVER PLUG CONDENSER CIRCULATION FAN MOTOR FAN MOTOR v THERMOSTAT DISPLAY S SITO STARTING uA CAPACITOR m CAPACITOR TEMPERATURE SENSOR MODEL MXX 23F CIRCUIT DIAGRAM POWER PLUG CONDENSER COMPRESSOR mun E a PAN MOTOR PAN MOTOR THERMOSTAT DISPLAY ES por M SWITCH CURRENT STARTING RELAY CAPACITOR 4 CAPACITOR TEMPERATURE SENSOR Service and Installation Manual WIRING DIAGRAM MODEL MXX
8. ior of the package and skid or container Any damage should be noted and reported to the delivering carrier immediately 2 If damaged open and inspect the contents with the carrier 3 In the event that the exterior is not damaged yet upon opening there is concealed damage to the equipment notify the carrier Notification should be made verbally as well as in written form 4 Request an inspection by the shipping company of the damaged equipment This should be done within 10 days from receipt of the equipment 5 Be certain to check the compressor compartment housing and visually inspect the refrigeration package Be sure lines are secure and base is still intact 6 Freight carriers can supply the necessary damage forms upon request 7 Retain all crating material until an inspection has been made or waived Service and Installation Manual SPECIFICATION STORAGE SHIP CAPACITY CHARGE WEIGHT NEMA MODELZ V Hz Ph Cu ft BTU H OZ LBS PLUG 7 Service and Installation Manual INSTALLATION Location Units represented in this manual are intended for indoor use only Be sure the location chosen has a floor strong enough to support the total weight of the cabinet and contents A fully loaded unit can weigh as much as 1500 pounds Reinforce the floor as necessary to provide for maximum loading For the most efficient refrigeration be sure to provide good air circulation inside and out Inside cabinet Do not pack the units
9. it become necessary to lay the unit on its side or back for any reason allow at least 24 hours before start up to allow compressor oil to flow back into place Failure to meet this requirement can cause compressor failure and unit damage Unit repairs will not be subject to standard unit warranties if due to improper installation NOTE procedures Electrical connection Refer to the amperage data on page 3 the serial tag your local code or the National Electrical Code to be sure the unit is connected to the proper power source The unit must be turned OFF and disconnected from the power source whenever Ad performing service maintenance functions or cleaning the refrigerated area Service and Installation Manual OPERATION Do not throw items into the storage area Failure to heed these recommendations could result in damage to the interior of the cabinet CAUTION Refrigerated cycle Refrigerators During the refrigeration cycle the evaporator fans wilt run continuously even when one or more doors are open The door switch will activate the lights when opened 1 Every 6 hours the unit will turn off and to allow the evaporator coil to defrost The controller now displays the defrost symbol When the coil temperature reaches 41 or after 20 minutes of defrost the unit will turn on again 2 Anti condensation heaters on door frames work in conjunction with the compressor 3 The factory setting for the temperature ra
10. me instances you may find that there is a large amount of debris and dust or grease accumulated prior to the 90 day time frame In these cases the condenser coil should be cleaned every 30 days If the build up on the coil consists of only light dust and debris the condenser coil can be cleaned with a simple brush Heavier dust build up may require a vacuum or even compressed air to blow through the condenser coil If heavy grease is present there are de greasing agents available for refrigeration use and specifically for the condenser coils The condenser coil may require cleaning with the de greasing agent and then blown through with compressed air Failure to maintain a clean condenser coil can initially cause high temperatures and excessive run times Continuous operation with dirty or clogged condenser coils can result in compressor failures Neglecting the condenser coil cleaning procedures will void any warranties associated with the compressor or cost to replace the compressor Never use a high pressure water wash for this cleaning procedure as water can damage the electrical components located near or at the condenser coil DANGER In order to maintain proper refrigeration performance the condenser fins must be cleaned of dust dirt and grease regularly It is recommended that this be done at least every three months If conditions are such that the condenser is totally blocked in three months the frequency of cleaning should
11. nge is 34 to 38 F Freezers During the refrigeration cycle the controller supplies power to the condensing unit and evaporator fan motors The evaporator fans will run at any time when the evaporator coil temperature is below 35 F they will also keep running during when door is open but cycle off during a defrost period The door switch will activate the lights when opened 1 Every 6 hours the unit will turn off and electric heater will turn on to start the defrost cycle The controller now displays the defrost symbol When the coil temperature reaches 45 or after 20 minutes of defrost the unit will turn on again 2 Anti condensation heaters on door frames work in conjunction with the compressor 3 The factory setting for temperature range is to 3 F On Off Switch An on off switch is located on the front of the panel When the unit is on the switch will glow green SOLID STATE THERMOSTAT DESCRIPTIONS 1 FRONT PANEL COMMANDS SET To display target set point in programming mode it selects a parameter or confirms an operation a DEF To start a manual defrost ah UP To view the latest alarm occurrence in programming mode it browses the parameter codes or increases the display value DOWN To view the latest alarm occurrence in programming mode it browses the parameter codes or decreases the display value KEY COMBINATION 4 w To lock amp unlock the keyboard SET W enter in programming mode SET
12. s together for more than 8s till the POF message is displayed 3 ALARM SIGNALS HOW TO SEE THE ALARM AND RESET THE Pe alah ALARM Room probe failure Compressor output according to par 1 Hold the or key to display the alarm signals Pr Evaporator probe tar 2 When the signal is displayed hold emer probe 008 the SET key until the rst message Maximum temperature alarm Outputs changed is displayed and push the SET key EEE again Phe rstmessagemiaMs Minimum temperature alarm Outputs unchanged blinking and the normal temperature Door open Compressor and fans restarts will be displayed Serious external alarm i1F bAL Service and Installation Manual MAINTENANCE The unit must be turned OFF and disconnected from the power source whenever performing service maintenance functions or cleaning the refrigerated area DANGER Refrigerators and Freezers The interior and exterior can be cleaned using soap and warm water If this isn t sufficient try ammonia and water or a nonabrasive liquid cleaner When cleaning the exterior always rub with the grain of the stainless steel to avoid marring the finish Do not use an abrasive cleaner because it will scratch the stainless steel and plastic and can damage the breaker strips and gaskets Cleaning the Condenser Coil The condenser coil requires regular cleaning and is recommended every 90 days In so
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