CMA Dishmachines EST-44 Building instructions
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Table of Contents
EST-44
1. SPECIFICATIONS................................................................................................. 2
1.1. EST- 44........................................................................................................................................... 2
2. GETTING STARTED............................................................................................ 3
2.1. Introduction to CMA Model EST -44............................................................................................. 3
2.2. Receiving and Installation .............................................................................................................. 4
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
2.3. EST-44 Safety Tips .......................................................................................................................16
3. OPERATION ........................................................................................................ 17
3.1. Beginning Operation......................................................................................................................17
3.2. Cleaning Instructions.....................................................................................................................19
3.3. Regular Service and Maintenance Checklist .................................................................................20
3.4. Trouble Shooting...........................................................................................................................21
4. EST-44/66 CUSTOMER NOTICE........................................................................ 3
5. PARTS MANUAL .................................................................................................. 5
5.1. Initial Parts Kit ............................................................................................................................... 5
5.2. Exploded View Drawings............................................................................................................... 6
5.2.1. Cabinet Assembly ................................................................................................................... 6
5.2.2. Control Box Assembly (3 Phase) ............................................................................................ 7
5.2.1. Control Box Assembly (1 Phase) ............................................................................................ 8
5.2.2. 480V Control Box Assembly (480V machines only) ............................................................... 9
5.2.3. Curtain and Optional Vent System ........................................................................................10
5.2.4. Old Wash Temperature Control System (Square Flange) .....................................................11
5.2.5. New Wash Temperature Control System (Triangular Flange)..............................................12
5.2.6. Rinse Temperature Control System .......................................................................................13
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5.2.7. Wash Pump Assembly (3 Phase)............................................................................................14
5.2.8. Wash Pump Assembly (1 Phase)............................................................................................15
5.2.9. Power Rinse Pump Assembly.................................................................................................16
5.2.10. Drain System Assembly..........................................................................................................17
5.2.11. Plumbing System Assembly (Auto-Fill) .................................................................................18
5.2.12. Plumbing System Assembly (Final Rinse)..............................................................................19
5.2.13. Wash System Assembly ..........................................................................................................20
5.2.14. Rocker Arm Assembly............................................................................................................21
5.2.15. Start Switch and Rinse Switch Assembly (Effective May 2014).............................................22
5.2.15.1. Right-to-Left Assembly.................................................................................................22
5.2.15.2. Left-to-Right Assembly.................................................................................................23
5.2.16. Start Switch and Rinse Switch Assembly ...............................................................................24
5.2.17. Door Switch Assembly (Effective August, 2014)....................................................................25
5.2.18. Optional E-Temp Heater (Effective September 1, 2018).......................................................26
5.2.19. Optional E-Temp Heater .......................................................................................................27
5.2.20. Unique Parts For EST-44 Tall machines...............................................................................28
6. TABLE LIMIT SWITCH (P/N 13469.20).......................................................... 29
7. DRAIN WATER TEMPERING KIT (OPTIONAL) ........................................ 30
8. ELECTRICAL DIAGRAM FOR 240V, 3 PHASE EST-44 ........................... 311
9. ELECTRICAL DIAGRAM FOR E-TEMP HEATER ONLY....................... 322
10. ELECTRICAL DIAGRAM FOR 480V EST-44.............................................. 333
11. ELECTRICAL DIAGRAM FOR 240V,1 PHASE EST-44 ............................ 344
MODEL EST-44 Service and Parts Manual Rev. 2 .08A Page
2
1. Specifications
1.1. EST- 44
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
VOLTS
PHASE
AMPS
AMPS(Tall)
ELECTRICAL RATING 208
1
71
N/A
240
1
80
N/A
208
3
55
60.5
240
3
62.5
69
480
3
24
27
SHIPPING WEIGHT
662#
(300kg)
High temp
Low Temp
Getting Started
2. Getting Started
new
new
new
new new
Power Rinse and sh
Water
new
Getting Started
MODEL EST-44 Service and Parts Manual Rev. 2 .08A Page
9
2.2.4. Scrap Tray Assembly Installation
The Scrap Tray Assembly and Overflow Chute, which were shipped inside the machine, can
easily be installed by executing the following steps: Figure 2.2.4 below illustrates the assembly,
as it would appear for a Left-to-Right machine –(a Right-to-Left machine would simply be the
mirror image).
Caution:
1.For proper spacing, the SS flat washer must not be located between the head of the truss
head bolt and the inside of the machine.
2. The Illustration below shows the correct placements of the scrap trap holder. Do not
install upside down, otherwise water deflection takes place.
Figure 2.2.4
1. Remove items from their packaging and verify that all “installation hardware” was included.
2. Secure the scrap trap holder to the dishmachine by using the four ¼-20 X ½” Hex Head
Bolts, the ¼” SS Flat Washers, and the ¼”-20 Nylon Lock Nuts that were provided.
3. Set the scrap trap body—with the scrap trap drawer inserted—into position on the scrap trap
holder. (Attach the drain as specified in Section 2.2.3)
Getting Started
MODEL EST-44 Service and Parts Manual Rev. 2 .08A Page
11
2.2.6. Wash Pump Assembly and Impeller
The standard wash pump motor is three-phase and can operate clockwise, as well as counter-
clockwise; the Nylon Lock Nut used to hold the impeller in place (See Figure 2.2.6), is very
important. When servicing the Wash Pump Assembly and replacing the seals, make sure it is
secured properly; otherwise, if the motor turns the wrong direction, the impeller may spin-off the
motor shaft causing damage to the impeller.
Note: ALWAYS CHECK THAT THE DIRECTION OF THE MOTOR ROTATION IS CLOCKWISE,
WHEN REINSTALLING THE WASH PUMP. IF THE MOTOR IS TURNING COUNTER-
CLOCKWISE, EXCHANGE L1 AND L3 WIRES ON MAIN CONTACTOR
Figure 2.2.6
Note: The Nylon Lock Nut indicated by the arrow in Figure 2.2.6 must be removed before
attempting to remove the water pump impeller.
Getting Started
MODEL EST-44 Service and Parts Manual Rev. 2 .08A Page
12
2.2.7. Table Limit Switch Installation
The Model EST-44 is shipped with a Table Limit Switch fully wired and connected in the main
control box, ready to be installed on the clean side of the dishtable. The Table Limit Switch
MUST be installed to prevent dishrack and Conveyor Drive damage.
1. Remove the template that was shipped to hold the table-limit switch assembly
together.
2. Remove the activator bar (Figure 2.2.7a).
3. Position the template in the middle of the clean side of the dishtable.
4. Mark the end of the table, where the holes need to be drilled (Figure 2.2.7b).
5. Drill the holes.
6. Attach the Table Limit Switch, using the hardware supplied.
7. Reattach the activator bar removed earlier.
8. Test that it functions properly (Figure 2.2.7c).
Figure 2.2.7a Figure 2.2.7b
Note: This terminal is not actual size ,not to be used
for installation!
Figure 2.2.7c
Getting Started
MODEL EST-44 Service and Parts Manual Rev. 2 .08A Page
15
2.2.11. (Optional) E-Temp Booster Heater*
The Optional E-Temp Booster Heater can only be ordered with a dishwasher, already installed at
the factory; it cannot be installed in the field. The E-Temp Booster heater will be fully integrated
into the EST-44 conveyors’ plumbing system. It will require its’ own power supply of 208 volts to
240 volts, in single-phase or three-phase. The unit can be specially ordered as a 480-volt unit, in
three-phase only; temperature is available in a 40° rise or 70° rise. The E-Temp Booster heater
contactor is located in the EST-44 Main Control Box (See item 7, page 6).
Note: E-Temp heater is shipped on the machine empty to prevent freezing. When machine
is powered up for the first time, the booster heater must be filled by pressing and holding
rinse switch to prevent heater damage.
Note: 70° degree rise E-temp Booster Heater is only available in Three-Phase.
*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
Getting Started
MODEL EST-44 Service and Parts Manual Rev. 2 .08A Page
16
2.3. EST-44 Safety Tips
DANGER:
Always turn off the main circuit breaker at the wall when
installing or servicing this dishmachine and/or an E-Temp
Booster Heater. Even with the machine’s power switch “off”,
there is a live connection being carried to the switch from the
dishmachine contactor.
CAUTION:
Do not get in the path of the Conveyor Rocker Arm or the
conveyor’s moving bar. Do not reach into the rocker arm area
without first making sure the dishmachine is turned “off” at the
circuit breaker.
CAUTION:
Do not open the front door when the machine is in operation.
CAUTION:
Avoid spraying water on or around the electrical control box
located on the top of the machine. When cleaning, do not
spray water directly on the motors.
CAUTION:
When removing the Final Rinse Arms for cleaning, exercise
caution. The Final Rinse Arms may be filled with chemicals or
have additional pressure applied.
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