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EST-44 L-R
Installation Manual
25 pgs1.74 Mb0

CMA Dish Machines EST-44 L-R Installation Manual

Rev.2.04
www.cmadishmachines.com
Table of Contents
EST-44
1. SPECIFICATIONS................................................................................................. 2
2. GETTING STARTED ............................................................................................ 3
2.2.1. Box Item List ........................................................................................................................... 4
2.2.2. Electrical ................................................................................................................................ 5
2.2.2.1. Control Box Components ............................................................................................... 6
2.2.3. Plumbing ................................................................................................................................. 7
2.2.4. Scrap Tray Assembly Installation ........................................................................................... 9
2.2.5. Conveyor Drive/ Rack Speed .................................................................................................10
2.2.6. Wash Pump Assembly and Impeller .......................................................................................11
2.2.7. Table Limit Switch Installation ..............................................................................................12
2.2.8. Optional Vent Hood Adapter’s Installation ................................................................ ...........13
2.2.9. Chemical Dispenser Connection ...........................................................................................14
2.2.10. Optional Exhaust Fan Control P/N 13578.00 ......................................................................14
2.2.11. (Optional) E-Temp Booster Heater .......................................................................................15
3. OPERATION ........................................................................................................ 17
4. ELECTRICAL DIAGRAM FOR 230V EST-44 ................................................ 22
5. ELECTRICAL DIAGRAM FOR E-TEMP HEATER ONLY ......................... 23
6. ELECTRICAL DIAGRAM FOR 480V EST-44 ................................................ 24
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2
1. Specifications
WATER CONSUMPTION
PER RACK (FINAL RINSE)
.46 GAL.
.46 GAL.
PER HOUR (FINAL RINSE)
114 GAL.
114 GAL.
CONVEYOR SPEED
FEET PER MINUTE
6.75
6.75
OPERATING CAPACITY
RACKS PER HOUR (NSF rated)
249
249
OPERATING TEMPERATURE
WASH RECOMMENDED
140° - 150° F
150° - 160° F
PUMPED RINSE RECOMMENDED
140° - 150° F
150° - 160° F
FINAL RINSE RECOMMENDED
140° - 150° F
180° - 195° F
WATER REQUIREMENTS
INLET TEMPERATURE (MIN)
140° F
180° F
WATER INLET SIZE
1/2”
FINAL RINSE SIZE
1/2”
DRAIN SIZE
2”
FINAL RINSE PRESSURE
20 PSI
HEATERS
WASH HEATER
13.3 KW/240V(1 phase) 13KW/208V(3 phase)
RINSE HEATER
3KW/240V, 2.25KW/208V
MOTORS
WASH PUMP
1 HP
RINSE PUMP
1/3 HP
CONVEYOR
1/8 HP
DIMENSIONS
DEPTH
25-1/8”
WIDTH
44”
HEIGHT
55 -1/2”-56-1/2”
STANDARD TABLE HEIGHT
32 ½” adjusts to 34”
MAX CLEARANCE FOR DISHES
19”
VENTILATION REQUIREMENTS CFM
600 Total, 400 at exit, 200 at entrance
STANDARD RACKS
19 ¾” x 19 ¾”
VOLTS
PHASE
AMPS
AMPS(Tall)
ELECTRICAL RATING 208
1
69
N/A
240
1
76
N/A
208
3
53
59
240
3
60
67
480
3
24
27
SHIPPING WEIGHT
662#
(300kg)
High temp
Low Temp
1.1. EST- 44
MODEL EST-44 Installation and Operation Manual Rev. 2 .04 Page
Getting Started
3
1. Getting Started
1.1. Introduction to CMA Model EST -44
The EST is designed to give maximum cleaning in 44 inches. It represents the cleaning power of machines twice its length. The curtains incorporated in the dishwasher minimize the transfer of water from tank to tank during the wash and sanitizing procedures.
The energy costs for running the new EST-44 have been greatly reduced, by the introduction of our new Stage Washing Process. The EST-44 Conveyor dishwasher (EST is abbreviation for ENERGY STAR) lowers gallon/rack ratings and is directly related to CMA’s new Power-Rinse Stage that has been introduced. The EST-44 new Re-circulating Wash and new Power-Rinse Stage greatly reduce the amount of chemicals being used, thus adding a significant cost reduction and energy efficiency to its’ operation.
The EST-44 can be used as a high or low temperature dishwasher, with the new wash tank and power rinse tank designs, both having their own re-circulating pumps. The Power Rinse Stage provides a fresh cleansing rinse, before the dish rack advances into the Power Rinse and Fresh Water and Sanitizing Rinse Stages.
The initial-fill water and the final rinse water that is supplied to the EST-44 must be a minimum of 140°F, in low-temperature applications, while high-temperature machines will require two water lines; one at a minimum water temperature of 140°F to fill the dishwasher, and the second with a minimum of 180°F for the final rinse. With the introduction of the new optional E-Temp Booster Heater, it will be offered fully integrated to the dishwasher.
The EST-44 also features a stainless steel scrap accumulator tank and tray, which must be emptied on a periodic basis, as necessary. The EST machine is designed to deliver 0.49 gallons of fresh rinse water for each rack. This water flows from the rinse and power-rinse tanks into the wash tank, and then overflows into the scrap tray, carrying any debris that may have fallen into the wash tank, thereby providing a much cleaner environment for the washed and rinsed dishes. If preferred, there are also options such as a Corner Feed System, optional Vent Hood Adapters, Exhaust Fan Control Circuits and a Drain Tempering Kit. CMA also offers a full line of other machine accessories, including stainless steel dishtables. (See equipment catalog)
DISCLAIMERS CMA expressly disclaims any and all warranties, express or implied, relating to the installation of any and all CMA equipment that
is installed by chemical dealers, contracted servicers or third party servicers to CMA equipment. If the installation instructions are not followed exactly (to the letter), or, if any person or company conducting the installation of the CMA equipment, revise the installation procedures or alter the instructions in any manner, the CMA warranty becomes void. If, due to the improper installation of CMA equipment, this equipment ceases to operate properly or affects other parts of the CMA dishwashing equipment, in that the other parts become defective, the CMA warranty becomes void. CMA will not be liable or responsible or warrant CMA equipment, due to improper installation of any CMA model dishwasher.
CMA does NOT endorse “Tankless On-Demand” water heaters for use on CMA Dishmachine products. On most applications, the volume of hot water required for commercial dishmachines exceeds the capacity of these types of heating sources. You will find that most, if not all, commercial dishmachines have been programmed with auto-filling features that require quick filling, with a designated limited time.
CMA DOES endorse, and highly recommends, the standard “tank” style water heaters, sized properly to handle each particular facility with their water heating requirements. A “tank” style water heater stores and supplies a large capacity of preheated water before providing hot water to the dishmachine. To meet required health codes, there must be a reliable and consistent flow of
adequate hot water supplied to the dishmachine. If the facilities’ “tank” style water h eater is marginal in size, CMA recommends installing a proper size Hatco Booster Heater, a CMA’s E -Temp 40 or 70-degree-rise Booster Heater (that can be installed on CMA
Conveyors), or a CMA Temp-Sure Booster Heater (for door and undercounter dishmachines). All are designed to adequately achieve results.
Important: Make sure incoming power supply corresponds to the voltage listed on the data plate. If the voltage is too low (206V or less), the heating elements will not reach desired temperature specified by manufacturer, and performance will be compromised. The heating element needs to be sized according to the facilities available voltage, which must be noted on your purchase order to CMA for a special dishmachine. Special lower voltage higher kilowatt heaters are available upon request. Make sure a fused disconnect switch or circuit breaker (not supplied) is installed in the electrical service lines supplying this dishwasher and should meet the requirements of your local electrical code.
MODEL EST-44 Installation and Operation Manual Rev. 2 .04 Page
Getting Started
4
EST-44
1
2
3
EXTERIOR LONG CURTAIN
DISH FLOW
DISHMACHINE FRONT VIEW
INTERIOR
SHORT
CURTAIN
EXTERIOR LONG CURTAIN
1.2. Receiving and Installation
1.2.1. Box Item List
When you receive your new EST-44, prior to installation of the dishwasher, remove the box containing the all items needed for the installation. (See item list below)
Literature & Manuals  Instructional Operation Video  Scrap Tank Assembly, w/Mounting Bracket  Curtains Interior and Exterior, w/Rods  Exterior Wrapper Shields  Installation Hardware  Operation Wall Chart  Optional Vent Hood Adapters when ordered.
Start by first installing the Scrap Tray Assembly (see Scrap Tray Assembly, Section 2.2.4), along with the Overflow Chute, then the two wrapper shields and the exterior and interior curtains and rods, which are shipped inside the machine. All of the wash-arms are fully installed over the wash and power-rinse tanks. There are a total of three curtains used in the EST-44: two long-exterior curtains and one short-interior curtain, all with their own curtain rods. (See Figure 2.2-1, below)
Figure 2.2.1
MODEL EST-44 Installation and Operation Manual Rev. 2 .04 Page
Getting Started
5
Main Power Knockout
1.2.2. Electrical*
The CMA Model EST-44 Conveyor can be ordered as Single-Phase or Three-Phase, using 208v to 240v. The machine must be connected to a dedicated circuit. (See Figure 2.2.2 below for amp draw). When installing a Three-Phase machine, check the voltage on all three incoming lines, and place the highest leg on the L2 terminal. (This is called a high-leg, stinger­leg, or Wild-leg.)
Prior to installation make sure the electrical supply is compatible with the specifications on the machines data plate. WARNING: Electrical and grounding connections must comply with the applicable portions of the National Electrical Code and/or other local electrical codes.
Note: For supply connections, use copper wire only rated at 90 degree C minimum. Warning: To prevent excessive overloads and component damages, it is essential for the
Dispenser Power Supply to be wired to the supplied Power Block on all conveyors. The CMA­supplied power block has been pre-wired to the wash heater contactor L1 and L3 terminals, to assure a correctly balanced power, as well as accurate surrounding components.
Only for dispensers requiring constant power, connect to L1 and L3 of main contactor; otherwise, use the Dispenser Power Block that has been provided.
Figure 2.2.2
On a 3-phase machine the water pump motors are also 3-phase and, depending on the terminal that each phase is connected to, the motor can rotate in either direction. Check the direction of rotation by removing the dust cap on the back of the motor. The motors must turn clockwise, when looking at the shaft from the back of each motor. To change the direction of rotation, switch any two power lead wires at the motor.
DANGER: ALWAYS TURN OFF THE DISHWASHER’S MAIN POWER SUPPLY BEFORE SERVICING THE DISHWASHER. ALTHOUGH THE MACHINE’S MAIN POWER SWITCH IS “OFF”, THE MAIN CONTACTOR LEADS WILL STILL HOLD VOLTAGE.
*
Electrical and plumbing connections must be made by a qualified person who will comply with all
available Federal, State, and Local Health, Electrical, Plumbing and Safety codes
MODEL EST-44 Installation and Operation Manual Rev. 2 .04 Page
6
1.2.2.1. Control Box Components
T
1
T2T
3
L1L
2
L
3
POWER
SWITCH
3 2
7
AUT
O
MANUA
L
GROUN
D
123
6
WASH HEATER
CONTACTOR
WASH TANK
PRE-RINSE
TANK
T1
T2
T3
OVERLOAD
RELAY
95
1
2
3
4
5
6
7
8
T
1
L
1
L
3
T
3
L
2
T
2
A
1
A
2
RINSE HEATER
CONTACTOR
T
1
T
2
L
1
L
2
L
3
T
3
1
A
A
2
RINSE PUMP CONTACTOR
T
1
L
1
L
3
T
3
L
2
T
2
A
1
A
2
WASH PUMP
CONTACTOR
T
1
T
2
L1L
2
L
3
T
3
1
A
A
2
T1
T2
T3
OVERLOAD
RELAY
95
CONVEYOR
CONTACTOR
MAI
N
CON
TAC
T
O
R
L
3
L
2
L
1
T
3
T2T
1
BOO
STER
H
EATER
CON
T
ACTOR
L
3
L
2
L
1
T
3
T
2
T
1
CHEMICAL DISPENSER
208-230V
9
10
11
14
16
17 18
19
12
13
15
1.
Main Contactor
11.
Detergent Terminals
2.
Wash Tank Heater Contactor
12.
Dispenser Power Supply Terminals
3.
Power Rinse Heater Contactor
13.
On-Off Power Switch
4.
Power Rinse Motor Contactor w/overload
14.
Auto/Manual Switch
5.
Wash Pump Contactor
15.
E-Temp Power Cable Knockout
6.
Conveyor Contactor w/overload
16.
Main Power Knockout
7.
E-Temp Heater Contactor (Optional)
17.
Wash Tank Float Terminals
8.
Conveyor Timer
18.
Power Rise Float Terminals
9.
Table Limit Switch Terminals
19.
Ground Terminal
10.
Sanitizer/Rinse Terminal Terminals
Getting Started
MODEL EST-44 Installation and Operation Manual Rev. 2 .04 Page
Getting Started
7
Main water inlet valve connection ½”
Final rinse water inlet valve connection ½”
Pressure regulator
Vacuum Breaker
1.2.3. Plumbing*
Note: The required flowing water pressure to the dishwasher is 15-65 PSIG. If pressures higher
than 65 PSIG are present, a pressure regulating valve must be installed in the water line to the dishwasher (by others). If flowing pressure is lower than 15 psi, improper machine operation may result.
Notice to Plumber: The plumber connecting this machine is responsible for making certain that the water lines are THOROUGHLY FLUSHED OUT BEFORE connecting to the dishwasher.
Ask your municipal water supplier for details about your local water conditions prior to installation. Recommended water hardness is 3 grains per gallon or less.
Note: high iron levels in the water supply can cause staining and may require an iron filter. High chlorine levels in the water supply can cause pitting and may require a chloride removal system.
If an inspection of the dishwasher or booster heater reveals lime buildup after the equipment has been in service, water treatment is recommended. If water softener is already in place, ensure there is a sufficient level of salt.
The water supply connection is made with two ½” hot water lines; the valves are located at the top of the machine, behind the main control box. The water supplied to the machine must be a minimum of 140° F to the main fill valve and a minimum of 180° F to 195° F for a high temperature final rinse, with no more than 140° F for a lower temperature final rinse. (See Figure
2.2.3a below)
Figure 2.2.3a
To set the final rinse pressure, the final rinse must be running. Turn the adjustment screw clockwise to increase final rinse pressure; and counter-clockwise to decrease the pressure set the final rinse pressure to 20-psi ±5 psi. (Set to 22 - 23 psi for optimum running pressure)
*
Electrical and plumbing connections must be made by a qualified person who will comply with all
available Federal, State, and Local Health, Electrical, Plumbing and Safety codes
MODEL EST-44 Installation and Operation Manual Rev. 2 .04 Page
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