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10

TROUBLESHOOTING

TROUBLE

CAUSE

REMEDY

Insufficient water flow.

1.  Insufficient incoming supply water       

pressure.

2.  Shutoff not fully open.
3.  Foreign debris in water pump strainer

1.  Verify incoming supply water pressure is a 

minimum of 25 psi (0.172 MPa).

2.  Open shutoff fully.
3.   Remove water pump strainer and clean.

Insufficient syrup flow.

1.  Insufficent CO

pressure to BIB pumps.

2.  Out of CO

.

3.  Shutoff not fully open.
4.  Bad syrup pump.

1.  Adjust CO

2

 pressure to 80 Psi (0.550 MPa) 

[minimum 70 Psi (0.480 MPa)] for BIB 

pumps.

2.  Replace CO

2

 tank/refill.

3.  Open shutoff fully.
4.  Replace BIB pump.

Water only dispensed; no syrup; 

or syrup only dispensed, no water

1.  Water or syrup shutoff on mounting block 

not fully open.

2.  BIB supply too far from dispenser.
3.  CO

2

 pressure too low.

4.  Stalled or inoperative BIB pump
5.  Kinked line.

1.  Open shutoff fully.
2.  Check that BIB supply is within six (6) feet 

of the dispenser.

3.  Check the CO

2

 pressure to the pump man-

ifold to ensure it is between 70 and 80 Psi 

(0.483 and 0.552 MPa).

4.  Check CO

2

 pressure and/or replace pump.

5.  Remove kink or replace line.

Excessive foaming.

1.  Incoming water or syrup temperature too 

high.

2.  CO

2

 pressure too high.

3.  Water flow rate too high.
4.  Nozzle and diffuser not installed.
5.  Nozzle and diffuser not clean.
6.  Air in BIB lines.
7.  Poor quality ice.

1.  Correct prior to dispenser. Consider larger 

dispenser or pre-cooler.

2.  Adjust CO

2

 pressure downward, but not 

less than 70 Psi.

3.  Re-adjust and reset ratio. 
4.  Remove and reinstall properly.
5.  Remove and clean.
6.  Bleed air from BIB lines.
7.  Check quality of ice used in drink.

Warm drinks.

1.  Dispenser was recently installed.
2.  Dispenser connected to hot water supply.

1.  It may take up to 5 hours, after install, to 

reach the desired temperature.

2.  Switch to cold water supply.

No carbonation

1.  Carbonator motor not running.
2.  Absence of CO

2

 gas.

3.  Gas only from valves.
4.  Carbonator tank air bound.
5.  CO

2

 gas pressure below too low.

6.  Carbonator motor running continuously.

1.  Check power supply. Be sure toggle switch 

is in ON position.

2.  Replace with full tank of CO

2

 gas.

3.  Check for power failure. Check fuses. 

Clean strainer on pump.

4.  Relieve gas pressure in tank by pulling ring 

on safety relief valve until water spurts out.

5.  Reset high pressure CO

2

 gas regulator to 

90-110 psi. Change CO

2

 tank if required.

6.  Check switch on carbonator. Check water 

in check valve for blockage. Check  

carbonator control. Check carbonator 

pump for efficiency.

Tower Troubleshooting

Summary of Contents for Multi-Valve Unit Tower

Page 1: ...for the unit being installed is required or needed please refer to the Lancer web site lancercorp com for immediate access or for your convenience scan this QR code with a mobile device app required...

Page 2: ...25 inches 184 15 mm Depth 9 inches 228 6 mm Height 16 5 inches 419 mm WEIGHT Shipping 15 lbs 7 0 kg CARBON DIOXIDE CO2 SUPPLY Min Pressure 70 PSIG 0 483 MPA Max Pressure 80 PSIG 0 552 MPA FITTINGS Pl...

Page 3: ...inage ensure that the dispenser is level front to back and side to side Place a level on the top of the rear edge of the dispenser The bubble must settle between the level lines Repeat this procedure...

Page 4: ...URN ON CO2 SUPPLY AT THIS TIME WARNING 7 Repeat Step 6 for both low pressure CO2 regulators on the regulator manifold routed to the unit and the syrup pumps A CO2 Regulator B Screwdriver C Regulator A...

Page 5: ...turning on CO2 7 Turn on CO2 at the source then using a screwdriver adjust the high pressure regulator at the source to 110 PSI 0 758 MPA then tighten locknut with wrench MULTI VALVE UNIT MVU PROGRAMM...

Page 6: ...positions B C D E and F 5 Press the Pour Cancel to save the changes and exit the programming mode Set MVU for Flavor Shots Refer to Overview Illustration for touch pad reference NOTE The Shot button w...

Page 7: ...press a brand button 5 Press the brand button again to pour for 4 seconds 6 Check for 10 oz of water in the ratio cup 7 Repeat process for other water type 8 Press Pour Cancel to exit programming mod...

Page 8: ...d for shot mode the LED light on that brand will blink twice and turn off NOTE The XL LED will blink slowly to indicate that it has been programmed The other size buttons are automatically set and do...

Page 9: ...p lines with BIB connectors in a bucket of warm water 3 Activate each valve to fill the lines with warm water and flush out syrup remaining in the lines 4 Prepare Cleaning Solution described on previo...

Page 10: ...ature too high 2 CO2 pressure too high 3 Water flow rate too high 4 Nozzle and diffuser not installed 5 Nozzle and diffuser not clean 6 Air in BIB lines 7 Poor quality ice 1 Correct prior to dispenser...

Page 11: ...or outlet line 2 Defective BIB pump check valve 1 Replace line 2 Replace BIB pump BIB pump continues to operate when bag is empty 1 Leak in suction line 2 Leaking o ring on pump inlet fitting 1 Replac...

Page 12: ...12 ILLUSTRATIONS PART LISTINGS MVU Tower Assembly...

Page 13: ...775 01 Retainer Slide 26 04 0481 Scr 8 32x1 125 27 64 5011 02 PCB Assy 28 49 0330 Nozzle Assy 49 0331 Nozzle Assy Flavor Shots Only 29 05 2687 01 Plate Nozzle 30 05 2682 Bracket Cover 31 54 0464 Cover...

Page 14: ...14 Wiring Diagram...

Page 15: ...15 Soda Water Flow Controls and Solenoids Plumbing Diagram...

Page 16: ...Lancer Corp 800 729 1500 Technical Support Warranty 800 729 1550 custserv lancercorp com lancercorp com...

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