® 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.
TABLE OF CONTENTS UNIT SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Concentrate Handling & Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Loading Concentrate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Changing Concentrate Containers: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Brixing Procedure . . . . . . .
Quest Service Manual UNIT SPECIFICATIONS 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.
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.
Quest Service Manual BRIXING PROCEDURE 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 • Paper Toweling • 1-Thermometer • 1-Refractometer Your will also need a flat blade screwdriver to turn a screw if brix adjustments are required.
Quest Service Manual 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.
Quest Service Manual PLANNED MAINTENANCE SCHEDULE DAILY Flush System: 1. 2. 3. 4. 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. Close the door and depress each dispense button for 2-3 seconds or until clear water flows from each dispense nozzle. Return the Dispense/Flush levers to the “Dispense” position.
Quest Service Manual Step 2 - Sanitize Pump System 1. Fill a clean concentrate container with 2 quarts (1.9L) of fresh sanitizing solution. 2. Place handles in the “dispense” position and close the door. 3. Press and hold the dispense button for 90 seconds then stop. Allow sanitizing solution to remain in the lines for 5 minutes. 4. After 5 minutes, dispense the remaining sanitizing solution. Step 3 - Prepare Dispenser for Use 1.
Quest Service Manual ANNUALLY Replace Pump Tubing: A replacement pump tubing kit, part#45098, is available. The kit consists of one pre-cut length of pump tubing, two white plastic hose clamps, and instructions. Removing Pump Platform(s): 1. 2. 3. 4. 5. 6. Remove the concentrate containers from the dispenser and place them in a refrigerator. Remove the cabinet shelf that the concentrate containers sit on.
Quest Service Manual 8. 9. While holding the pump halves together with your hand, reinsert the four screws and tighten using a criss-cross pattern as shown. The screws should be tightened about 1/4 turn beyond snug. Insert the two concentrate delivery tubes into the pump tubing ends and secure them using the new hose clamps supplied in the kit. Be sure to use pliers to squeeze and tighten the hose clamps. Fig. 3 Publication Number: 720901117SER -8- © 2004, IMI Cornelius Inc.
Quest Service Manual TROUBLESHOOTING GUIDE The following pages contain trouble-shooting information intended to aid an experienced service person in diagnosing operational problems that may occur. For further assistance, contact the IMI Cornelius Technical Services department at 1-888-248-5568 (630-539-6850 outside the United States) between the hours of 7:30A.M. and 5:00P.M. Central Standard Time. You must have the model and serial number (Located on the right side of the dispenser) prior to calling.
Quest Service Manual PROBLEM PROBABLE CAUSE No water dispensed, concentrate only REMEDY • Water solenoid located on pump platform clogged or defective • Disassemble and clean solenoid. Replace if necessary. • Main water solenoid/strainer located at the rear of dispenser is clogged, binding or defective • Remove and clean strainer. Confirm 28VDC is present at solenoid during dispense. Confirm solenoid coil is not open. Disassemble and clean solenoid.
Quest Service Manual PROBLEM PROBABLE CAUSE REMEDY • Defective pump motor • Replace pump motor • Ambient air around dispenser is too warm • Relocate dispenser • Excessive demand on dispenser • Add water pre-cooler or second dispenser • Dirty condenser coil • Clean condenser coil • Inoperative condenser fan • Replace condenser fan motor • Defective Ice Bank Control • Test and replace if necessary • Loss of refrigerant charge due to leak in system • Repair leak and recharge syst
Quest Service Manual PROBLEM Machine continues to dispense after dispense button is released or dispenses without operator input PROBABLE CAUSE REMEDY • Defective voltage regulator board (VRB) located inside front electrical box • Confirm board produces 28VDC present when the dispense button is pressed (refer to the Electrical Box Wiring Diagram for VDC output location).
Quest Service Manual DIAGRAMS SYSTEM WIRING DIAGRAM © 2004, IMI Cornelius Inc.
Quest Service Manual MAIN ELECTRICAL BOX WIRING DIAGRAM Publication Number: 720901117SER - 14 - © 2004, IMI Cornelius Inc.
Quest Service Manual SPARE PARTS QUEST SERIES JUICE DISPENSER - 115VAC (BASED ON 10 MACHINES) Part Number 729011132 560004360 18071 18367 31314 45028 45098 45432 7215323 7245699 620710107 19695001 31525037 45012102 45016001 45026100 45091001 45728001 48520001 48979103 59328001 440000902 720500014 720500104 720500710 720202009 720502800 720503201 720503206 720503207 720503208 720506104 720507101 720508801 720508802 720511606 720703502 720704001 720501504 720504904 © 2004, IMI Cornelius Inc.
Quest Service Manual QUEST SERIES JUICE DISPENSER - 230VAC (BASED ON 10 MACHINES) Part Number Description 729011132 560004361 18071 18367 31314 720500794 45098 45432 7215323 7245699 620710107 19695001 31525037 45012102 45016001 45026100 Kit, Parts - Stocking Condenser Fan, Motor 230VAC Seat, Armature - Water Valve Spring, Coil S/S - Water Solenoid Fluorescent Bulb Transformer, 230VAC Pump Tubing Kit Inner Door Switch Armature - Water Solenoid Flow Control/Bonnet Assembly Rubber Gasket Guide, Water Solen
Quest Service Manual WARRANTY IMI CORNELIUS INC. Certificate of Warranty ONE YEAR LIMITED BEVERAGE EQUIPMENT WARRANTY IMI Cornelius Inc. warrants to the original commercial purchaser/user, that any commercial product of its manufacture bearing the name Wilshire will be free from defect in material and/or factory workmanship, and that if properly installed, maintained, and serviced in accordance with the Service Manual furnished with the product, it will perform adequately under normal use.
Quest Service Manual The table below will be used by IMI Cornelius Inc. as a STANDARD service call guide to determine fair and reasonable labor charges for warranty repairs. Charges in excess of these rates will be subject to review and/or adjustments. The labor warranty referenced in the Certificate of Warranty in this manual applies to the replacement of the defective part. IMI Cornelius Inc.
IMI Cornelius Inc. www.cornelius.
