Release Date: April 12, 2004
Publication Number: TP00968
Revision Date: November 23, 2004
Revision: C
Visit the IMI Cornelius web site at www.cornelius.com for all your Literature needs.
Quest Juice Training Manual
The products, technical information, and instructions contained in this manual are subject
to change without notice. These instructions are not intended to cover all details or variations of the equipment, nor to provide for every possible contingency in the installation,
operation or maintenance of this equipment. This manual assumes that the person(s)
working on the equipment have been trained and are skilled in working with electrical,
plumbing, pneumatic, and mechanical equipment. It is assumed that appropriate safety
precautions are taken and that all local safety and construction requirements are being
met, in addition to the information contained in this manual.
To inquire about current revisions of this and other documentation or for assistance with
any Cornelius product contact:
IMI Cornelius Inc.
Phone: 800-238-3600
Internet: www.cornelius.com
Trademarks and copyrights:
Aurora, Cornelius, Decade, Hydro Boost, Sitco, Spirit, UF-1, Vanguard, Venture, and Vista
are registered trademarks of IMI Cornelius Inc.
Optifill trademark is pending.
This document contains proprietary information and it may not be reproduced in any way
The Quest Juice Dispenser uses an ice/water bath system to cool both the potable water supply and the
concentrate cabinet.
To achieve cooling capabilities we use an agitator/recalculating pump and motor. This cools the stainless
steel water coils and circulates the cold water through a heat exchanger to cool the cabinet. This gives us
colder drinks for longer periods of time and eliminates the need to have to defrost the cooling cabinet.
Water quality has an affect on juice dispensing systems.
• odor
• taste
• clarity/foaming
Water filtration is recommended to assure the best beverage taste.
Water Flow
Inlet water pressure should be regulated to 45 to 50 psi max. (3.1 bar) to prevent damage to pump tubing. Minimum flowing pressure must be 20psi.
Flow Rates
Adequate water flow is necessary and must be at least 3.0 ounces per second (89ml) at the inlet to the
unit.
Quest Juice Training Manual
SYSTEM DETAILS
CONCENTRATE
• Concentrate should be stored frozen and put into a cooler 72 hours before use. Rapid cooling, such
as in a sink of hot water, adversely affects flavor and leads to service calls.
• Proper loading of concentrate is important. Improper loading is a major source of service calls.
Left and Right Pump Platforms
• Concentrates vary in viscosity and mixing valves must be adjusted accordingly.
• When changing concentrate, be sure to check the concentrate container O-ring for damage. It should
be clean and wet with concentrate or a food grade lubricant.
• Shake or stir pulp based concentrates.
• When changing flavors, be sure to flush the system and reset the pump.
• Nozzles should be cleaned daily. Remove the nozzles and wash in warm soap solution. Rinse with
clean water, lubricate the O-ring, and replace nozzle.
• Flushing daily and sanitizing weekly is recommended.
Cabinet
Cooling Fan
Serial Decal
Lighted Merchandiser
ON/OFF
Platform Pump
ON/OFF
SETTINGTHE BRIX
• A refractometer must be used to measure the post-mix brix.
• Ratio adjustment can be set with a concentrate separator and ratio cup, see Brixing Procedure.
• Ratios are sometimes set by taste but this is not recommended.
The minimum airflow clearance is: 4” (10.16 cm) in back and 12” (30.48 cm) on top and open to the front.
IMPORTANT: Condenser air is drawn in from the bottom of the rear panel and discharged out the top of
the rear panel. Failure to maintain clearance space will reduce capacity of the unit and cause premature
compressor failure.
FILLINGTHE ICE B ATH
The fill tube is located behind the splash panel. Use the water supply line to fill the ice bath before connecting it to the unit.
Remove the 3/8” cap from the fill tube/sight glass to begin filling the ice bath. Replace the cap when finished filling the ice bath. Lock it in place with its holder.
Full Water
Level
IMPORTANT: Fill the water bath slowly until it runs out
the overflow. Failure to do so can cause back pressure and improper water level. ALWAYS FILL WITH
THE UNIT UNPLUGGED.
Quest Juice Training Manual
Cabinet
drain outlet
Water bath
overflow
Replace the cap TIGHTLY when finished filling the water bath. Lock it in place with its holder.
CONNECTING WATER SUPPLY
The QST series Juice Dispenser is designed to dispense juice at a high flow rate. It is very important that
the incoming water line be dedicated for use by the dispenser only and does not have other machines
connected which could cause a water surge, (i.e., a dishwasher, coffee maker, etc.).
IMPORTANT: The water supply should be consistent with proper water quality standards (neutral pH of
7.0 to 8.0), and should not be connected to a water softener. It is the installers responsibility to ensure
that all water connections to the dispenser are sized, installed, and maintained according to Federal,
State, and Local Laws.
Secure the 3/8” (0.95 cm) swivel nut on the flexible supply tubing to the water inlet
located at the rear of the dispenser. Make sure that the flared gasket is used (tubing and
flared gasket are included with the installation kit).
IMPORTANT: When securing flare nut, use a backup wrench on the male side of the inlet fitting (unit
side) to prevent twisting of the copper tube inside the unit and/or possible damage to the water strainer/
solenoid. A water shut off outside the unit is recommended.
PRIMING/FLUSHING WATER SYSTEM
To properly prime the unit with water and remove air pockets in the
system, open the cabinet door and make sure that all the valve
levers are in the “Dispense” position.
Close the door and press the dispense button for a few seconds.
Repeat until a steady flow of water is observed flowing from all dispense valves.
NOTE: Water splashing may occur during this purge cycle.
It is recommended that the concentrate be thawed in a refrigerated 35°F-40°F (1.6°C-4.4°C) compart-
ment for a minimum of 48 hours prior to loading into the Quest Juice Dispenser.
WARNING: Concentrate must be completely thawed and within the temperature range of 35°F-
40°F (1.6°C-4.4°C) prior to loading. Failing to supply concentrate inside the recommended tem-
perature range, especially below 35°F (1.6°C), will cause an out of brix drink (refer to the Brixing
Procedure section for details).
LOADING CONCENTRATE
The Quest Juice Dispenser is designed to use either disposable juice concentrate
containers or the optional Cornelius generic refillable container sold separately.
1.Thoroughly shake thawed concentrate prior to use.
2.Place concentrate containers on the dispensing platform shelf inside the refriger-
ated cabinet.
3.Engage the concentrate container by pressing it downward into the bottle adapter
opening on the dispensing platform.
NOTE: Be sure to lubricate the o-ring seal on the container nozzle. This will ensure a good seal
and allow the pumps to draw concentrated from the containers more easily. Failure to create a
good seal at this connection may result in weak drinks and/or seepage of concentrate.
4.Prime each pump by closing the cabinet door and press each dispense button until concentrate flows
from the dispense nozzles.
CHANGING CONCENTRATE CONTAINERS:
1.Open the cabinet door and move the valve handle from “Dispense” to “Flush”
2.Close the door. Depress and hold the dispense button until clear water flows from the dispense noz-
zle.
3.Open the cabinet door and return the handle to “Dispense”.
4.Depress and hold the dispense button for 1-2 seconds. This will relieve water pressure from the con-
centrate pump system.
5.Load concentrate container (see Loading Concentrate ).
NOTE: If concentrate is not properly thawed, it will adversely affect the amount of concentrate
dispensed. Thawed product should be between 35 °F/1.6°C to 40°F/4.4°C.
NOTE: You can not dispense drinks with the door open.
SUPPLIES
• 1-Small 12 oz. cup (354.8 ml)
• 1-Large 21 oz. cup (621.1 ml)
• 1-Straw
• Paper Towel
• 1-Thermometer
• 1-Refractometer
• Concentrate Separator (720601323)
Your will also need a flat blade screwdriver to turn a screw if brix adjustments are required.
Quest Juice Training Manual
BRIXING PROCEDURE
NOTE: The refractometer shown above, P/N 511004000, is available through your local Cornelius
Distributor.
CHECKING/ADJUSTINGTHE B RIX SETTING
The following instructions are for use with a refractometer.
1.Dispense approximately 8 oz. (236 ml) of drink and discard. Now draw a second 8 oz. drink.
2.Check drink temperature with a reliable thermometer (target is 35-45°F, or 1.6-7.2°C). Discard
this drink after checking temperature.
NOTE: If drink temperature is not within the target range, refer to the basic troubleshooting section. When setting up the unit with warm concentrate and hot water (90 °F) it will take longer to
get the 35-45 °F finished drink.
3.Dispense a 12 oz (354.8 ml) drink sample into a clean, dry cup. Thoroughly stir the sample using a
straw. (Adjustments should be made in 1/8 to 1/4 turn increments).
4.Using a straw, transfer a small sample of finished drink to the refractometer lens (refer to operating
instructions supplied with your refractometer). Check the brix reading against the brix chart below.
NOTE: The following brix chart is generic and intended for reference use only. Contact your frozen concentrate supplier for specific brix readings.
The pump speed switch has two settings, low and high. For most dispensing situations high speed will be
the preferred speed. Most concentrates use this setting. Low speed is only used when the water pressure is at the low end of the range (25 PSI or less) and the concentrate is a very thin viscosity such as
apple or cranberry. Low speed cuts the output voltage to 18VDC.
Using a water booster system to increase the flowing pressure to the recommended pressure is a
better solution.
5.To change the brix setting, simply readjust the water flow rate.
Located on each of the valve assemblies inside the refrigerated
compartment are the adjusting screws for the water flow rate (one
per valve).
If the brix reading is too high or low, rotate the appropriate water flow
control according to the diagram below. Repeat steps 1-5 until the brix
setting is achieved.
Lowers Brix by increasing water
Raises Brix by reducing water
IMPORTANT: When making changes to the water flow control, do not rotate more than 1/4 turn
per adjustment. Additionally, prior to taking your next brix reading, “tap” the corresponding dispense button several times prior to drawing a sample. This will clear remnant drink from the dispense nozzle AND help move the flow control to its new setting.
PROGRAMMINGTHE PORTION CONTROL
If your dispenser has optional portion controls, they have been pre-programmed from the factory to pour
7, 12, and 16 ounce drinks. The “extra large” (pitcher icon) size has also been pre-programmed to pour
16 ounces. To change the pour sizes, please follow the instructions below:
1.Simultaneously, press and hold “small” and “extra large” push button switches on the Portion
Control Module until the “Refill” light starts blinking. Release the switches. The blinking Refill
light indicates the programming mode is active.
2.Place the cup under the dispense nozzle and push the selected size button (small, medium,
large, or extra large). Hold the button in until the cup fills to the desired portion, then release
the button. Repeat the above procedure for the remaining sizes.
3.After programming all the drink sizes, press and release the “cancel/pour” switch to return
the Portion Control to the operational mode. The blinking REFILL light will go out.
4.If at a future date it is decided to change the portion size of the drinks, the individual sizes
can be adjusted by the above procedure. It is not necessary to reprogram every size. Additionally the
portion control has full memory retention in case of a power failure.
Cancel/Pour Button
To pour a drink without using a pre-programmed portion control size, simply push and hold the
Cancel/Pour button. Release when the glass is full.
1.Move Dispense/Flush levers located on the platform assembly in
the refrigerated cabinet to the “Flush” position. Place an empty
cup on the drip tray below each dispense nozzle.
2.Close the door and depress each dispense button for 2-3 seconds or until clear water flows from each dispense nozzle.
3.Return the Dispense/Flush levers to the “Dispense” position.
4.Press each dispense button for 1-2 seconds to release the water
pressure present in the concentrate pump system.
Clean Splash Zones & Dispense Nozzles:
1.On a daily basis, clean the external cabinet and
splash areas using a clean damp cloth. Remove
and wash the cup rest and drip tray using a mild
dish soap.
2.Remove the dispense nozzles and static mixers
by rotating each 90° and pulling down. Remove
the mixing chambers by pulling straight forward.
Wash using a mild dish soap.
Quest Juice Training Manual
IMPORTANT: DO NOT wash nozzles, static mixers, or mixing chambers in a dish washer. This
will distort the plastic and damage the o-rings. Additionally, do not soak them in sanitizing solution longer than 2 minutes.
WEEKLY
Check concentrate to water brix ratio (refer to the Brixing Procedure in this manual).
Sanitize the Juice Dispenser:
Step 1 - Rinse With Hot Water
1.Prepare two 2 oz. packets of Stera-Sheen Green Label sanitizing solution (or similar brand) by dissolving each packet in 1 gallon (3.8L) of potable water to insure 200 ppm of available chlorine.
IMPORTANT: Use potable water at 80°F-100°F (26.7°C-37.8°C). Water above this range will breakdown the chlorine count and minimize sanitation.
2.Remove the juice concentrate containers and place them in separate refrigerated compartment.
3.“Flush” the system by following the instructions in the Daily Section.
4.Fill a clean empty concentrate container with one quart of extremely hot tap water, approximately
140°F (60°C) and place into unit. Dispense all of the hot water into a large container. Repeat for the
remaining dispense valves.
5.Remove the mixing chambers, nozzles, and static mixers. Rinse in hot water to remove excess pulp
and concentrate.
6.Place the mixing chambers, nozzles, and static mixers in a separate container of sanitizing solution
and agitate vigorously. Allow the parts to soak for two minutes. Rinse thoroughly with fresh tap
water.
7.Reinstall the static mixer, nozzles, and mixing chambers.