IMPORTANT: To the user of this manual – This manual is a guide for installing, operating and
maintaining this equipment. Refer to Table of Contents for page location of detailed information
pertaining to questions that arise during installation, operation, service and maintenance, or
troubleshooting this equipment.
GENERAL DESCRIPTION
This section provides a description, design data, and theory of operation for the Vista Three and Five-Flavor
Post-Mix Dispensers (with electric dispensing valves) hereinafter referred to as Units.
UNIT DESCRIPTION
The Unit is compact with a high-impact and corrosion-resistant moulded lower housing. It may be installed on a
front or rear counter, or island-mounted. The Unit refrigeration assembly is a ‘‘drop-in’’ type of 1/25 H.P. (40
watt) which can be removed for cleaning and service. The Unit, (except for the non-carbonated version), is
equipped with an integral (built-in) cold carbonator which supplies cold carbonated water to the dispensing
valves.Installation consists of locating the Unit, connecting water, CO2 and syrup lines, filling the water tank and
applying electrical power.
Optional four-inch-high legs are available to elevate the Unit above the countertop for ease of cleaning. Order
four each of the leg (P/N 314744000).
FIGURE 1. VISTA POST–MIX DISPENSER
CAUTION: Before shipping, storing, or relocating this Unit, the syrup systems must be
sanitized and all sanitizing solution must be purged from the syrup systems. All water must
also be purged from the plain and carbonated water systems. A freezing ambient
environment will cause residual water in the Unit to freeze resulting in damage to internal
components.
*Number of drinks dispensed 42° F or below at 75° F syrup and plain water inlet temperature at 75° F
ambient.
Refrigerant:
Refrigerant RequirementSee Unit
Nameplate
Ambient Operating Temperature 40° F to 90° F
Electrical Requirements:
Operating Voltage (115VAC Unit)115VAC,60 Hz
Current Draw2.6 Amps
Operating Voltage (230VAC Unit)230VAC,50HZ
Current Draw1.3 Amps
Inlet CO2 Requirements:
Inlet CO2 pressure must be higher than inlet water pressure, but must not exceed 60 psi.
Water Inlet Requirements:
Minimum: 25-psi Maximum: 50-psi**
**If inlet pressure exceeds maximum, a water pressure regulator is required.
WARNING: CO2 displaces oxygen. Strict attention must be observed in the prevention of
CO2 (carbon dioxide) gas leaks in the entire CO2 and soft drink system. If a CO2 gas leak is
suspected, particularly in a small area, immediately ventilate the contaminated area before
attempting to repair the leak. Personnel exposed to high concentration of CO2 gas will experience
tremors which are followed rapidly by loss of consciousness and suffocation.
THEORY OF OPERATION
Units with model numbers 0557, 0824, and 1551 dispense carbonated drinks and are equipped with integral
(built-in) carbonators. Model number 0559 dispenses non-carbonated (still) drinks and has no provision for carbonation.
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Units With Integral (Built-In) Carbonators. (see Figures 2 and 3)
Units with integral (built-in) carbonators use regulated carbon dioxide (CO
syrup tanks and CO
gas to the carbonator within the Unit. Plain cooled water pumped into the carbonator tank
2
gas to provide pressurization for the
2)
absorbs the CO2 gas and is thereby carbonated. When a drink dispense valve is opened, CO2 pressure within
the carbonator drives pre-cooled carbonated water from the carbonator to the dispensing valve. CO2 pressure
exerted upon the syrup tank contents similarly drives syrup from the syrup tank, through an individual syrup
cooling coil in the water tank, then to the dispensing valve. Carbonated water and syrup meet simultaneously at
the dispensing valve to create a carbonated drink flowing from the valve.
Unit without Carbonator. (see Figure 4)
When the dispensing valve is opened, inlet water at a pressure above 25-psi flows through two plain water cooling coils to the dispensing valve. At the same time, syrup under CO2 pressure in the syrup tank flows
directly to the dispensing valve. Water and syrup meet at the dispensing valve to create a non-carbonated drink
flowing from the valve. If a Bag-in-Box (BIB) configuration is used as shown in Figure 5, the flow of water remains as described, but each BIB is provided with a CO2 operated syrup pump which is energized when the
dispensing valve is operated. The syrup pump provides syrup under pressure to the dispensing valve.
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4
WATER FILTER INSTALLATION
FOR FILTERS WITHOUT
BUILT–IN WATER SHUTOFF VALVE
WATER FILTER INSTALLATION
FOR FILTERS WITHOUT
BUILT–IN WATER SHUTOFF VALVE
SHUTOFF
VALVE
WATER
STRAINER
PLAIN WATER
COOLING COILS
WATER
MANIFOLD
1
2
PRIMARY REGULATOR
(70–80 PSI)
FILTER
CO2 MANIFOLD
CHECK
VALVE
3
4
5
DISPENSER
SYRUP PUMP (5)
BAG–IN–BOX SYRUP CONTAINERS
LINE LEGEND
CO2
PLAIN WATER
SYRUP
FIGURE 5. FLOW DIAGRAM (NON-CARBONATED DISPENSER WITH BAG-IN-BOX SYRUP SYSTEM)
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INSTALLATION
UNPACKING AND INSPECTION
Each Unit is completely tested under operating conditions and thoroughly inspected before shipment. At time of
shipment, the carrier accepts the Unit and any claim for damage in transit must be made with the carrier. Upon
receiving Units from the delivering carrier, carefully inspect the carton for visible indication of damage. Any
damage or irregularities should be noted at this time (not later than 15-days from date of delivery) and
immediately reported to the delivering carrier. Request a written inspection report from the carrier’s claims
inspector to substantiate claim. File claim with the delivering carrier not with IMI Cornelius Inc.
Unpack the Unit as follows:
1. Cut two bands.
2. Lift carton wrap off Unit.
3. Remove hood.
4. Remove loose-shipped items from the drip tray and check each item against Table 2.
5. Carefully inspect Unit for evidence of damage. If evidence of damage is found, file a claim against the
carrier.
2. ADAPTER FITTINGS ( Item 3) are to be installed in the inlet and outlet of the WATER STRAINER
(ITEM 4). The TAPERED GASKETS (ITEM 5) are used to seal connections of the water strainer to the
water inlet line.
3. TRANSFORMER ASS’Y (item 6) is used to provide electrical power to the Electric Dispensing Valves.
4. BAFFLES, DISPENSING VALVES (item 7) to be installed on dispensing valves of the Five-Flavor
Non-Carbonated Dispenser model number 0559 during installation.
SELECTING LOCATION
The Unit may be island-mounted or installed on a front or rear counter provided that the following requirements
are satisfied.
IMPORTANT: Ambient operating temperature for Unit must not exceed 90° F. Satisfactory temperatures
may be obtained using blowers, air conditioning etc. Check local codes.
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1. Locate Unit to provide the following minimum clearance:
Over top of hood Open (15-inches)
Rear 6 inches
Sides 0 inches
WARNING: All electrical wiring must conform to national and local electrical codes.
WARNING: CO2 displaces oxygen. Strict attention must be observed in the prevention of
CO2 (carbon dioxide) gas leaks in the entire CO2 and soft drink system. If a CO2 gas leak is
suspected, particularly in a small area, immediately ventilate the contaminated area before
attempting to repair the leak. Personnel exposed to high concentration of CO2 gas will experience
tremors which are followed rapidly by loss of consciousness and suffocation.
2. Locate Unit near a grounded electrical outlet having a dedicated circuit fused at 15-amps (slow-blow) for
115 VAC, 60 HZ Units and fused at 7.5-amps for 230 VAC, 50 HZ Units. Alternate protection using an
equivalent HACR (US) circuit breaker may be used. Note: No other equipment should be connected to
this circuit.
3. Locate the Unit close to a water inlet supply with pressure and flow as given in the listing of Table 1. Design
Data.
INSTALLATION
PLACING UNIT IN OPERATING LOCATION
Place the Unit in the selected operating location. When connecting plain water, CO2, and syrup lines, leave
three feet of extra tubing to allow for servicing the Unit.
1. Place Unit in operating location meeting requirements of SELECTING LOCATION.
2. To comply with National Sanitation Foundation (NSF) requirements, Unit base must be sealed to the
countertop. Proceed as follows to seal Unit base to the countertop.
Note: An alternate arrangement to avoid sealing the Unit base to the countertop would be to install the
4-inch legs (P/N 314744000) on the Unit. When ordering, order four legs.
A.Tilt Unit up to expose bottom of the base.
B.Liberally apply silastic sealant such as Dow Corning RTV 731 or equivalent on base bottom edges.
Note: Do not move Unit after positioning or seal from Unit base to countertop will be broken.
C.Lower Unit into operating position on the countertop to complete seal from Unit base to the
countertop.
D.Apply additional sealant around bottom of the Unit base. Seal must have a minimum radius of 1/2-inch
to prevent crevices and to insure a complete seal.
ROUTING DRIP TRAY DRAIN HOSE TO A PERMANENT DRAIN
Note: Drip tray drain hose routed to a waste container is not recommended due to sanitation and
cleaning problems. Connection of drain hose to a permanent drain is recommended.
1. Preferably, route drip tray drain hose and connect to a permanent drain.
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