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QBD CDxxHC, Installation, Operation And Maintenance Manual, Page: 28 / 31

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QBD CDxxHC Installation, Operation And Maintenance Manual Download Page 28

 

 

            

 

 

            QBD COOLING SYSTEMS INC. 

                                                                                                                                                      QBD.COM

 

 

 

28 

 
 
 

 

-

 

Always  use  QBD  supplied  OEM  parts  only.  Use  of  non-OEM 
parts will not only void the warranty but may also lead to a fire, 
explosion, serious injury or death. 

       ------------------------------------------------------------------------------------------ 

-

 

Only  trained  and  certified  technician,  for  Hydrocarbon 
systems, should service these coolers.  

      ------------------------------------------------------------------------------------------ 

-

 

Use  extreme  caution  and  follow  all  local/regional  codes  for 
transportation or relocation of Hydrocarbon coolers.

 

 

-

 

Always  use  proper  charging  techniques 
e.g.-  using  only  certified  and  calibrated 
weighting scales 

Leak test  

-

 

Leaks inside or  outside of a cooler  may 
result in a flammable mixture. 

-

 

Leak  detection  must  be  done  using 
electronic  or  ultrasonic  leak  detectors 
calibrated for hydrocarbon refrigerants.  

Sealing the process tubes 

-

 

Seal  the  process  tube  using  an 
approved  method  or  by  pinching  the 
tubing 

with 

the 

recommended 

equipment  and  then  sealing  it  with 
brazing material or silver solder.  

-

 

Improper sealing of the process tube 
may  lead  to  leaks  or  a  sudden 
release of flammable refrigerant. 

 

 

23. 

GUIDELINES FOR TROUBLE- SHOOTING

 

Symptom 

Possible Cause 

Solution 

Compressor starts and 
runs but short cycles 
on the overload 
protector 

-

 

Excess current passing 
through overload 

-

 

Low / unstable voltage 

-

 

Overload failed 

-

 

Capacitor fault 

-

 

Excessive discharge 

-

 

Suction pressure too high 

-

 

Compressor overheating 

-

 

Compressor electrical fault 

-

 

Check wiring diagram for wrong 
connections of electrical components 

-

 

Check voltage supply 

-

 

Replace overload 

-

 

Replace capacitor 

-

 

Check for over charge or condenser 
blockage / condenser fan failure 

-

 

Check refrigerant charge 

-

 

Replace compressor 

Units runs OK but 
short cycles 

-

 

Overload protection 

-

 

Incorrect thermostat setting 

-

 

Check the wiring 

-

 

Replace the overload 

-

 

Change the thermostat setting if 
required 

Warm temperature 

-

 

Too low control setting 

-

 

Inadequate air circulation 

-

 

Reset the controller to colder setting 

-

 

Improve air movement 

Summary of Contents for CDxxHC

Page 1: ...W 3K6 1 800 663 3005 TEL 905 459 0709 FAX 905 459 1478 QBD COM info qbd com Publication 47 0480 189 B V2 5 01 2017 R 290 COOLERS HC SERIES INSTALLATION OPERATION AND MAINTENANCE MANUAL CAUTION READ THIS MANUAL BEFORE INSTALLATION OPERATION AND OR SERVICING YOUR COOLER ...

Page 2: ...URES FOR R 290 8 7 INSPECTION UPON DELIVERY 8 8 VISUAL CHANGES TO CD 3 0 9 9 ELECTRICAL SAFETY 11 10 RECOMMENDED ELECTRICAL PARTS FOR HC COOLERS 13 11 INSTALLATION 14 12 CASTER INSTALLATION 15 13 SHELF INSTALLATION 15 14 COLD CONTROL 16 15 WIRING DIAGRAM FOR CDxxHC DCxxHC COOLERS 18 16 LED LIGHTING 19 17 COOLING DECK REMOVAL ACCESS AND RE INSTALL 20 18 HC MODEL DOOR REVERSAL AND ADJUSTMENT 21 19 P...

Page 3: ...tion with the Product its sale operation or use b without limiting the generality of the foregoing spoilage of products loss of sales incidental indirect consequential or special damages or any injury loss cost or expense arising directly or indirectly from fungi or fungal derivatives sustained in connection with the Product its sale operation or use c glass Door Side Window or light bulb breakage...

Page 4: ... operation and servicing 3 In order to carry out service and repair on R 290 COOLER the service personnel must be qualified and trained to handle flammable refrigerants This includes knowledge on tools transportation of the compressor and refrigerant relevant regulations and safety precautions Also service must be performed in a well ventilated area and in compliance with the local regional nation...

Page 5: ...tain average product temperature at 3 3 C 38 F follow temperature setting as indicated on rating plate inside the cooler Any change in setting could result in poor performance and or component s failure 14 QBD will not be responsible for poor performance component failure s damages or losses due to improper installation of the cooling deck electrical components cooler itself and or use of non OEM ...

Page 6: ...flammable substance that may be present in the surrounding environment WARNING Indicates potentially hazardous situation which if not avoided may result in injury property damage and or cooler failure DANGER Indicates potentially hazardous situation which if ignored could result in death or serious injury property damage and or cooler failure CAUTION emphasise information which may cause cooler fa...

Page 7: ...f products loss of sales incidental indirect consequential or special damages or any injury loss cost or expense directly or indirectly sustained in connection with the Product its sale operation or use This cooler is NOT intended for outdoor use or to be subjected to direct sunlight dampness high dust levels extreme heat and or cold temperature Ensure adequate ventilation around the cooler It sho...

Page 8: ...ater for at least 15min Get medical attention Frostbite Try to warm up the frozen tissues and seek medical attention Inhalation Immediately move to area with fresh air If breathing has stopped give artificial respiration If breathing is difficult qualified personnel may give oxygen Get medical attention Refer to updated MSDS for more details 7 INSPECTION UPON DELIVERY Your cooler contains R 290 re...

Page 9: ...ious injury or death Only trained and certified technician for Hydrocarbon systems should service these coolers Use extreme caution and follow all local regional codes for transportation or relocation of Hydrocarbon coolers 8 VISUAL CHANGES TO CD 3 0 Technicians are responsible to ensure these red sleeves are always present on access points as per UL 471 requirement ...

Page 10: ...rtified technician for Hydrocarbon systems should service these coolers Use extreme caution and follow all local regional codes for transportation or relocation of Hydrocarbon coolers All QBD Hydrocarbon coolers are provided with multiple identification and hazard labels These can be located inside the cabinet and other visible surfaces of the cooler Please contact QBD technical support for more i...

Page 11: ...eaker For personal safety this appliance must be effectively grounded at all times The power cord of this cooler is equipped with a three prong grounding plug which mates with a standard three prong grounding wall outlet receptacle to minimize the possibility of electric shock hazard from this cooler Have the wall outlet and circuit checked by a qualified electrician to make sure the outlet is eff...

Page 12: ...tric circuit until all work is completed and all connections are tested CAUTION All units must be powered at their nominal operating voltages at all times The voltage should be within 10 of the nameplate voltage rating as overvoltage or under voltage could damage the cooler QBD is not responsible for the repair or replacement of failed or damaged components resulting from electrical power failure ...

Page 13: ... parts only Use of non OEM parts will not only void the warranty but may also lead to a fire explosion serious injury or death Below is just to demonstrate some examples of difference in parts used in non R 290 vs R 290 systems CONTROLLER Please contact QBD Technical support for more information on controller for your particular cooler ECM MOTORS UL Approved Very High Efficiency Brushless Wider op...

Page 14: ...N AND DOOR SUPPORT BRACKETS Always maintain the following EXTERNAL clearances for ease of installation door opening and proper air circulation o Top 2 o Hinge Side 1 1 4 o Non Hinge Side 1 2 o Back 3 Maintain a clearance of at least 2 feet in front of the grill to ensure free air flow from the refrigeration unit Cooler is designed for freestanding installation only It should not be recessed or bui...

Page 15: ...fer plate required as caster top is directly in contact with the vase channel plate Shim plate may be required for leveling of cooler IMPORTANT NOTE QBD does not offer casters for PC8 PC8L models Do not use any third party casters kits For safety and stability of the cooler only use the supplier levelling legs Don t adjust the levelling legs beyond a Maximum Height of 1 2 1 2 inch on PC8xx coolers...

Page 16: ...ontrol QBD Part 47 0520 255 The recommended setting is at 5 which will allow the cooler to operate between 38 42 F Temperature probe should be in the return air section This controller features voltage protection automatic defrost and energy saving logics DISPLAY INDICATORS This indicates the Evaporator Motor s is are running but the Compressor is off On initial power up there is an intelligent de...

Page 17: ... 5 on CAREL Controllers Push the WRENCH button for 3 seconds to get to the settings mode Use the COLDER or WARMER buttons to adjust to the desired setting To save the new setting you MUST push and hold the WRENCH button for 3 seconds or until the controller returns to USE QBD doesn t recommend any temperature setting change without prior authorization Cold control is set at 5 for beverage storage ...

Page 18: ... After using the cooler for 24 hours adjust the temperature control to the setting that is best suited for your needs NOTE If the cooler is unplugged or turned off you must allow 5 minutes before starting it or plugging it back in If you attempt to restart it in less than 5 minutes it may not restart and it may damage the compressor and VOID WARRANTY Turning the temperature control dial to OFF or ...

Page 19: ...or relocation of Hydrocarbon coolers Ref No 47 0040 533 Please call QBD service for additional information if required Check for refrigerant leak before connecting or disconnecting power to unit 16 LED LIGHTING All HC coolers are installed with customized LED lighting for maximum product illumination high energy efficiency and convenient replacement option Check for HC leak prior to disconnecting ...

Page 20: ...a fire explosion serious injury or death Only trained and certified technician for Hydrocarbon systems should service these coolers Use extreme caution and follow all local regional codes for transportation or relocation of Hydrocarbon coolers 17 COOLING DECK REMOVAL ACCESS AND RE INSTALL FOLLOW STEPS BELOW FOR COOLING DECK REMOVAL RE INSTALLATION ...

Page 21: ... two keyhole slots and screws that hold the grill in place Use a Philips type screwdriver to remove the top right bracket while holding the door If there is a shim under the bracket remove it too Set the bracket aside but take care to hold the door Open the door slightly and lift it up firmly The spring would be released at the bottom Place the door on a flat non scratching surface Interchange the...

Page 22: ...r to the left for Counter Top Model 1 Unplug the cooler and empty it 2 Don t remove the leveling legs 3 Use a Philips type screwdriver to remove the top bracket while holding the door If there is a shim under the bracket remove it as well Set the bracket aside while continuing to support the door 4 Open the door slightly and lift it firmly The spring will be released at the bottom 5 Tilt the coole...

Page 23: ...aphic if required 14 Check door gasket for proper sealing and alignment 19 PREVENTIVE MAINTENANCE AND CLEANING INSTRUCTIONS Interior Exterior Cleaning Cabinet Check the area for any refrigerant leak before connecting or disconnecting power to unit Remove all products and shelves Never use acids chemical thinner gasoline benzene or the like for cleaning any part of the cooler Boiling water or benze...

Page 24: ...e above procedures to reinstall the cooling deck Please make sure you connect the power supply lift the handles install the locking bar and fasten the two screws CD coolers only Never use any sharp tool for cleaning the condensing coil The cooler contains flammable refrigerant 20 REPLACE VS REPAIR FOR COOLING DECK 3 0 Replace swap the cooling deck under the following circumstances a Compressor fai...

Page 25: ...igerant recovery cylinder Portable lighting If possible it is recommended that the cooler cooling deck be removed from its existing position to a controlled workshop environment suitable to conduct the repair safely Safety Checks Prior to conducting maintenance or service on R 290 coolers perform all necessary safety checks to ensure the risk of ignition is minimized Please comply with the followi...

Page 26: ... during which R 290 refrigerant can possibly be released to surrounding space If brazing or welding is required this should be performed in an area detached from the cooler If this is not possible then the system should be fully evacuated using guidelines as outlined in QBD service documents Ventilated Area Ensure that the area is in the open or that it is adequately ventilated before breaking int...

Page 27: ...e a tube cutter rather than a torch to remove the failed component as shown below Using a torch may cause a fire hazard especially if the refrigerant has not been completely discharged recovered If you must use a torch to remove the failed component of sealed system do so while running dry nitrogen continuously through the system Always use OEM parts only Use of non OEM parts will not only void th...

Page 28: ...nt and then sealing it with brazing material or silver solder Improper sealing of the process tube may lead to leaks or a sudden release of flammable refrigerant 23 GUIDELINES FOR TROUBLE SHOOTING Symptom Possible Cause Solution Compressor starts and runs but short cycles on the overload protector Excess current passing through overload Low unstable voltage Overload failed Capacitor fault Excessiv...

Page 29: ...ion line frosted Evaporator fan not working Overcharged system Determine reason or replace if required Correct the charge Leaking water Very humid conditions Blocked drain Door not sealed properly top door seal Clear blocked drains Repair replace door gaskets realign seal doors Evaporator freeze up Temperature controller set too cold Blocked restricted air flow Defective evap motor running at low ...

Page 30: ...y also lead to a major fire explosion severe injury or death 4 Can I use add light switches in R 290 cabinet NO All electrical fittings must comply with UL 471 and must be explosion proof It is therefore recommended not to add any electrical switch in the cabinet LEDs provided with the cooler are compliant to UL 471 and must be replaced with OEM parts only 5 Can the same tools be used to service a...

Page 31: ... void the warranty but may also lead to a fire explosion serious injury or death Only trained and certified technician for Hydrocarbon systems should service these coolers Use extreme caution and follow all local regional codes for transportation or relocation of Hydrocarbon coolers 25 QBD CONTACT INFORMATION ...

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