IMI Cornelius, Inc. QST 4000 Service Manual

QUEST NT

4000

Service Manual

®

Release Date: February 19, 2004

Publication Number: 720901117SER

Revision Date: November 23, 2004

Revision: C

Visit the IMI Cornelius web site at www.cornelius.com

for all your Literature needs.

QUEST NT 4000

SERVICE 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.

Corporate Headquarters

One Cornelius Place

Anoka, MN 55303-6234

U.S.A.

[e-mail]

In the U.S.A.:

phone:[phone]

800-238-3600

FAX:[phone]

Trademarks and copyrights:

Aurora, Cornelius, Decade, Hydro Boost, Sitco, Spirit, UF-1, Vanguard, Venture, Olympus,
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 without permission from Cornelius.

Printed in U.S.A.

Internet:

www.cornelius.com

Email:

Outside the U.S.A.:

phone:[phone]

FAX:[phone]

Copyright © 2004, All Rights Reserved, IMI Cornelius Inc.

TABLE OF CONTENTS

UNIT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Concentrate Handling & Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Loading Concentrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Changing Concentrate Containers: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Brixing Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Checking/Adjusting the Brix Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Planned Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Daily . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Flush System: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Clean Splash Zones & Dispense Nozzles: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Weekly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Sanitize the Juice Dispenser: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Semi-Annual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Clean Water Inlet Strainer: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Clean Chassis Interior: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Check and Top-Off Water Ice Bath: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Annually . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Replace Pump Tubing: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Removing Pump Platform(s): . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Replacing Pump Tubing: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

System Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Main Electrical Box Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Quest Series Juice Dispenser - 115VAC (based on 10 machines) . . . . . . . . . . . . . 15

Quest Series Juice Dispenser - 230VAC (based on 10 machines) . . . . . . . . . . . . . 16

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

IMI CORNELIUS INC. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

UNIT SPECIFICATIONS

Quest Service Manual

Nameplate Data: Model QST 4000, 115 VAC, 4.5 amps, 1 phase 60 hertz, 6.75 oz. (191-193g) R-134a
refrigerant. Test press: High side 400 psi (27.6 bar). Low side 100 psi (6.9 bar).
Model QST 4000, 230 VAC, 3 amps, 1 phase 60hertz, 6.75 oz. (191-193g) R-134a refrigerant. Test
press: High side 400 psi (27.6 bar. Low side 100 psi (6.9 bar).

Concentrate Storage: Four 0.8 gallon (3.0 liter) disposable bottles.

Clearance Recommended: 12” (30.48 cm) on top and 4” (10.16 cm) required in back for air circulation.

Electrical Connection: 6 ft. long (1.83 m) power cord with 3-prong plug attached to dispenser. Export

models have line cord less plug.

Power Supply: 15 amps at 120 volts dedicated power supply.
10 amps at 230 volts dedicated power supply.

Water Connection: 3/8 in. (0.95 cm) SAE male flare fitting on dispenser.

Water Supply Requirements: 80 psi (5.5 bar) maximum static pressure. 20 psi (1.4 bar) minimum

dynamic pressure; i.e., flowing pressure measured at dispenser water inlet with 3.0 ounces (88.7 ml) per
second water flow, see part number 720901017 Rev. D for reference.

Ice Bank/Pull Down: Weight 14-16 lbs. Pull Down: 3.5 - 5 hours at 75°F (24°C)

© 2004, IMI Cornelius Inc. - 1 - Publication Number: 720901117SER

Quest Service Manual

CONCENTRATE HANDLING & LOADING

It is recommended that the concentrate be thawed in a refrigerated 35°F-40°F (1.6°C-4.4°C) compart­ment 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°F­40°F (1.6°C-4.4°C) prior to loading. Failing to supply concentrate inside the recommended tem­perature 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 concentrate prior to use.

2. Place concentrate containers on the dispensing platform shelf inside the refriger­ated 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 noz­zle.

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
concentrate pump system.

5. Load concentrate container (see

Loading Concentrate

).

Publication Number: 720901117SER - 2 - © 2004, IMI Cornelius Inc.

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.

SUPPLIES

• 1-Small 12 oz. cup (354.8 ml)

• 1-Large 21 oz. cup (621.1 ml)

• 1-Straw

Quest Service Manual

BRIXING PROCEDURE

• Paper Toweling

• 1-Thermometer

• 1-Refractometer

Your will also need a flat blade screwdriver to turn a screw if brix adjustments are required.

NOTE: The refractometer shown above, P/N 511004000, is available through your local Cornelius
Distributor.

CHECKING/ADJUSTING THE BRIX 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.

3. Dispense a 12 oz (354.8 ml) drink sample into a clean, dry cup. Thoroughly stir the sample using a
straw.

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.

Brix Reference Chart

Flavor Ratio Brix
Orange Juice 4+1 11.8
Grapefruit Juice 5+1 10.6
Cranberry Cocktail 4+1 13.5
Apple Juice 5+1 12.0
Grape 5+1 13.0
Lemonade 5+1 10.5
Tropical Punch 5+1 11.8
Sweetened Iced Tea 7+1 6.0
Pineapple Juice 4+1 12.8
Prune Juice 2+1 16.0

© 2004, IMI Cornelius Inc. - 3 - Publication Number: 720901117SER