Servend MDH-302 Series Installation, Use & Care Manual Download Page 49

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Section 5

Before Calling for Service

Part Number 020003999 6/14

5-5

Liquid Level Control Troubleshooting

END

START

Remove red

and black

wires from

LLC.

Is pump

motor

operation

intermittent

Does

pump

motor

come

on?

Black and/or red probe

shorted. Remove

probes, straighten or
replace if necessary.

Short “H” and

“C” terminals

on LLC.

Does

the

pump

motor

shut

off?

Measure AC

voltage

across load

terminals on

LLC.

Check pump

motor and

wiring.

Check probe

harness, harness

connections and

water supply.

Is line

voltage

(± 10%)

present

Replace

LLC

Yes

END

START

Does

Pump
motor

come on?

Remove red

and black

wires from LLC.

Is pump

motor operation

intermittent?

Does

pump

motor

come

on?

Black and/or red probe

shorted. Remove

probes, straighten or
replace if necessary.

Short “H” and

“C” terminals

on LLC.

Does

the

pump

motor

shut

off?

Measure AC

voltage

across load

terminals on

LLC.

Check pump

motor and

wiring.

Check probe

harness, harness

connections and

water supply.

Is line

voltage

(± 10%)

present

Replace

LLC

Yes

Summary of Contents for MDH-302 Series

Page 1: ...is updated as new information and models are released Visit our website for the latest manual www manitowocfsg com Leader in Ice Beverage Dispensers MDH 302 402 icepic Selectable Ice Series Ice Bevera...

Page 2: ...sure to read the Warning statement before proceeding and work carefully Caution Text in a Caution box alerts you to a situation in which you could damage the equipment Be sure to read the Caution sta...

Page 3: ...tion Requirements for Top Mounted Ice Machine Installations 2 3 Pre installation Checklist 2 4 Double Check 2 5 Also Consider The Location Of The Following Items Before Installation 2 5 Additional Che...

Page 4: ...Key Pads 2 15 Starting Your Beverage System Dispenser 2 16 Section 3 Operation General System Overview 3 1 MDH 302 Cold Carbonation System 3 2 MDH 402 Cold Carbonation System 3 3 Component Identificat...

Page 5: ...Ice Crusher Assembly 4 7 Gear Motor Removal 4 8 Sanitizing 4 10 Beverage System Cleaning 4 10 Bag In Box System Sanitation 4 10 Figal Beverage System 4 11 Shipping Storage and Relocation 4 11 MDH Ser...

Page 6: ...Table of Contents continued 4 Part Number 020003999 6 14...

Page 7: ...NITOWOC ICE MACHINE When installing a Manitowoc Ice Machine on a dispenser a baffle kit is required for proper installation The baffle kit is designed to prevent ice from lying against the front of th...

Page 8: ...he serial number is listed on the SERIAL NUMBER DECAL affixed to the dispenser Serial Number Location Warranty Information Consult your local MBS Distributor for terms and conditions of your warranty...

Page 9: ...ing start up services Dimensions Applies to icepic models also MDH 302 CI MDH 402 CI Important Failure to follow these installation guidelines may affect warranty coverage MODEL A B C D E MDH 302 42 7...

Page 10: ...MDH 302 CI MDH 402 CI Model Maximum Minimum A B C D MDH 302 38 75 98 43 cm 20 50 52 07 cm 3 00 7 62 cm 32 00 81 28 cm MDH 402 56 50 143 51 cm 21 40 54 36 cm 3 00 7 62 cm 48 00 121 92 cm Caution Cuttin...

Page 11: ...ront of ice machine to be flush with front of dispenser Some ice machines may overhang at the back of the dispenser Drains A separate drain line is required for the ice machine in addition to a drain...

Page 12: ...O2 regulator set Product connectors for Figal tank Gas connectors for Figal tank Beverage dispenser Beverage tubing CO2 tank Figal beverage tanks Stepless Oetiker clamps Chain for CO2 tank B I B conne...

Page 13: ...e stored ice Water line Drain Power outlet Heating and air conditioning ducts Location Avoid placing the dispenser and or ice machine near heat sources such as radiators ovens refrigeration equipment...

Page 14: ...kit 6 If there are no screws on the ice machine step 2 pierce the thin plastic countersunk holes install the backing plates and install the deflector using the screws from the kit 7 Replace the front...

Page 15: ...th all local codes and ordinances Warning All wiring must conform to local state and national codes Important Due to continuous improvements this information is for reference only Please refer to the...

Page 16: ...ble U L listed insulated cable connector 4 The black wire from the cable must be joined to the L1 terminal of the liquid level control board by a suitable U L listed insulated cable connector Warning...

Page 17: ...supply which dispenser valves and water manifolds The water supply must first be connected to the carbonator pump not shown before plumbing to connection A shown on plumbing diagram The carbonator pu...

Page 18: ...STANCE CALL 812 246 7000 IN OUT INTERNAL CARBONATOR TANK MDH 302 RIGHT HAND SIDE SERVEND RECOMMENDED PLUMBING 2 1 1 2 FLEX LEFT TO RIGHT POST CHILL FLEX MANIFOLD PRE CHILL INLET LINES EXTERNALLY CARBO...

Page 19: ...O M C A R B P U M P S Y R U P 9 S Y R U P 1 1 S Y R U P 1 2 S Y R U P 1 3 S Y R U P 1 4 S Y R U P 1 5 S Y R U P 1 6 P L A IN W A T E R B S Y R U P 1 0 A PLAIN WATER TO THE CARBONATOR B PLAIN WATER TO...

Page 20: ...M P S Y R U P 1 1 S Y R U P 1 3 S Y R U P 1 4 S Y R U P 1 5 S Y R U P 1 6 S Y R U P 1 7 S Y R U P 1 8 S Y R U P 1 9 S Y R U P 2 0 P L A IN W A T E R B S Y R U P 1 2 A PLAIN WATER TO THE CARBONATOR B...

Page 21: ...ser and the drain pan 3 Depending on drain location route the tubing through the tubing bundle cutout or out the back of the dispenser 4 Verify the tubing is not kinked and then secure tubing to maint...

Page 22: ...at a minimum dynamic pressure of 40 psi and maximum static pressure of 70 psi NOTE For water booster setups connect directly to the incoming water to the unit A regulator may be needed to maintain 40...

Page 23: ...Connect the ADA ribbon cable to the ADA wire harness that is fastened to the foam front by a wire clip 7 Neatly tuck in and take up any slack remaining in the ADA ribbon cable so it will not be in th...

Page 24: ...ity drink to your customer 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 Cubed Crushed Cubed Crushed 12 Valve Dispensers 1 2 3 4 5 6 7 8 9 10 7 8 9 10 11 12 Cubed Crushed Cubed Crushed 1 2 3 4 5 6 7 8 9 10 1 2 3 4...

Page 25: ...In Box 4 Carton Syrup Syrup Pump BIB Countertop show the basic operation of the This is a simplified schematic to beverage system NOTE Carbonated Non carbonated Beverage Manifolds Carbonator Tank 90 1...

Page 26: ...CUT OUT 100 PSI BOOSTER SYSTEM CO2 REGULATOR FIXED AT 75 PSI FITTING NOT USED INSTALL 3 8 CAP NUT PART 3094 AND WASHER 1701115 WATER FROM BOOSTER TO PUMP INLET CO2 SUPPLY 100 PSI MIN COLD CARBONATION...

Page 27: ...ATED WATER TO WATER INLETS ON UNIT NON INSULATED FROM CARBONATOR PUMP NON CARBONATED WATER TO WATER INLETS ON UNIT NON INSULATED FROM CARBONATOR PUMP NOTES COLD CARBONATION DECK MUST BE WITHIN 10 FEET...

Page 28: ...3 5 hours Activating the dispenser will reset the timer After 3 5 hours of non use the timer will energize the dispenser motor The LED tells the technician in which mode the timer is operating Rather...

Page 29: ...he splash panel of the unit When activated the micro switch starts the gear motor and ice crusher motor The gear motor turns the paddle wheel and U bar agitator The paddle wheel carries ice to the cru...

Page 30: ...r is the carbonator tank water pump and water pump motor 5 CO2 cylinder Holds highly pressurized carbon dioxide CO2 The CO2 cylinder is a steel or aluminum cylinder tank CO2 gas flows through the prim...

Page 31: ...ms where two or more bags of the same product are connected to one pump and one system An auto bag selector is essentially a valve that automatically changes from one bag or series of bags to another...

Page 32: ...acle and holding the CUBE button at the same time CUBE will flash 2 times Unit will now change to cube ice 10 seconds after CRUSHED is selected How to Set Crush Default 2 Power on the unit by plugging...

Page 33: ...of the unit with warm water and a clean cloth Wipe again with a clean dry cloth Clean the dispensing valves 6 Remove nozzles and diffusers from beverage valves Nozzle Removal 7 Rinse nozzle and diffu...

Page 34: ...owing the directions for mixing and applying the sanitizer 7 Sanitize the ice bin and cold plate with the sanitizing solution for at least 10 seconds 8 Allow to air dry Do not rinse Re assembling the...

Page 35: ...f not dispensed Disassembly DISASSEMBLY FOR CLEANING AND MAINTENANCE NOTE Sanitize the ice dispenser at Initial Start up in addition to monthly sanitizing You will need a slotted screwdriver in order...

Page 36: ...he ice bin b Push the agitator bar toward the bushing to remove it from the paddle wheel hub NOTE If a top mount ice machine is installed sliding the ice machine to one side will make bin component re...

Page 37: ...ay from the foam front 6 See the following steps to remove the ice crusher blade assembly from the crusher housing A Unlock the crusher hub from the crusher housing by pulling the locking tab out and...

Page 38: ...crusher components 3 Using the mild detergent solution and a soft bristle brush or clean cloth clean the following ice crusher components Blade hub assembly Cosmetic chute Drip pan Crusher housing Ic...

Page 39: ...to place 14 Reattach the decorative ice chute by inserting the chute rod through the chute housing mount and motor mount Secure the chute rod by inserting cotter pin through the rod on the right side...

Page 40: ...model and serial numbers MDH302 MDH402 610039642 up Non front Serviceable 1 Disconnect power from the electric receptacle 2 Remove all ice from the ice storage bin of the dispenser 3 Remove the paddl...

Page 41: ...hamfered edge of drive shaft The new motor must have the same alignment within 15 degrees 6 Get correct alignment one of two ways a Turn drive shaft with an adjustable wrench being careful not to dama...

Page 42: ...sanitizer Bag In Box bag connector 1 Prepare the following in the buckets Bucket 1 warm to hot tap water for rinsing Bucket 2 mild detergent and warm to hot water Bucket 3 mix a solution of unscented...

Page 43: ...ply 100 PPM available chlorine 1 4 oz bleach to 1 gallon water 2 Disconnect all product and water lines from product tanks and remove carbonator 3 Locate the Figal syrup tank for the circuit to be san...

Page 44: ...diser frame starting with the bottom one first Left side removal illustrated below Note A Phillips head screw driver may be used if the screws are too tight 2 Remove the end portion of the frame that...

Page 45: ...anty Break ice clusters before manually filling the dispenser See ice recommendations Excessive water spilling from the ice machine Adjust ice machine to eliminate water spillage Poorly adjusted ice m...

Page 46: ...r axle Crusher motor turns but gear motor for paddle wheel agitator bar does not turn Agitator gear motor faulty Replace agitator gear motor Loose wiring Check wiring Obstruction in Ice bin stopping m...

Page 47: ...on motor faulty Replace ice crusher motor assembly Crusher axle broken Replace crusher axle Crusher motor turns but gear motor for paddle wheel agitator bar does not turn Agitator gear motor faulty Re...

Page 48: ...will not dispense anything Is there power to the valve Broken wire or loose connection Replace repair wire or connector Bad microswitch Replace microswitch Beverage dispensed is too sweet Is the rati...

Page 49: ...nd wiring Check probe harness harness connections and water supply Is line voltage 10 present Replace LLC Yes No Yes Yes Yes Yes No No No No END START Does Pump motor come on Remove red and black wire...

Page 50: ...Before Calling for Service Section 5 5 6 Part Number 020003999 6 14 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 51: ......

Page 52: ...re Drive Sellersburg IN 47172 USA Ph 812 246 7000 Fax 812 246 7024 Visit us online at www manitowocfsg com 2014 Manitowoc Continuing product improvements may necessitate change of specifications witho...

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Servend MDH-302 Series, Installation, Use & Care Manual

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