CMA Dishmachines EST44 Operation Manual
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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 EST -44.................................................................................................................. 3
2.2. Receiving and Installation.............................................................................................................. 4
2.2.1. Electrical ................................................................................................................................5
2.2.2. Plumbing*............................................................................................................................... 5
2.2.3. Installation Notes.................................................................................................................... 5
2.2.4. Optional Table Limit Switch................................................................................................... 7
2.2.5. Scrap Tray Assembly Installation........................................................................................... 8
2.2.6. Pump Impeller Note................................................................................................................ 9
2.2.7. Optional Hood Adapter (Set of Two).................................................................................... 10
2.2.8. Field Installed Accessories................................................................................................... 11
2.2.8.1. Chemical Dispensers .................................................................................................... 11
2.2.8.2. Hood Fan Motor ........................................................................................................... 11
2.2.9. EST-44 Heaters..................................................................................................................... 11
2.3. Safety Tips for the EST-44........................................................................................................... 13
3. OPERATION ........................................................................................................ 14
3.1. Initial Setup .................................................................................................................................. 14
3.1.1. Rinse Pressure Regulator..................................................................................................... 14
3.1.2. Wash and Rinse Temperatures............................................................................................. 14
3.2. Beginning Operation..................................................................................................................... 15
3.2.1. Chemical Dispensing............................................................................................................ 16
3.2.1.1. Low Temperature Applications.................................................................................... 17
3.3. Regular Service and Maintenance Checklist................................................................................ 17
3.4. Trouble Shooting.......................................................................................................................... 19
4. EST-44 CUSTOMER NOTICE.............................................................................. 20
5. ELECTRICAL DIAGRAM FOR 230V EST-44................................................ 22
6. ELECTRICAL DIAGRAM FOR E-TEMP HEATER ONLY.........................23
7. ELECTRICAL DIAGRAM FOR 480V EST-44................................................ 24
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1. Specifications
1.1. EST- 44
WATER CONSUMPTION
PER RACK (FINAL RINSE) .49 GAL. .49GAL.
PER HOUR (FINAL RINSE) 119 GAL. 119 GAL.
CONVEYOR SPEED
FEET PER MINUTE 6.75 6.75
OPERATING CAPACITY
RACKS PER HOUR (NSF rated) 243 243
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 12.75 KW/240V, 10KW/208V
RINSE HEATER 3KW
MOTORS
WASH PUMP 1 HP
RINSE PUMP 1/3 HP
CONVEYOR 1/3 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”
STRANDARD RACKS 19 ¾” x 19 ¾”
ELECTRICAL RATING
SHIPPING WEIGHT
662#
EST-44
L.T.
VOLTS PHASE AMPS
208 1 69
240 1 76
208 3 46
240 3 51
480 3 24
EST-44
H.T.
(300kg)
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Getting Started
2. Getting Started
2.1. Introduction to 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 machine minimize transfer from tank
to tank during the wash and sanitizing procedures.
Energy costs for running the EST-44 have been greatly reduced by the introduction of stage
washing. EST (energy star) models lower gal/rack ratings are related to new washing stages
being introduced: wash/recirculating rinse/final rinse. EST models have one tank for wash water
and one tank for pumped rinse water, followed by a final rinse sanitizing rinse.
The supply water to the EST-44L must be a minimum of 140°F, while the EST-44H requires two
supply lines; one at a minimum water temperature of 180°F (for RINSE), and the other at a
minimum temperature of 140° F (for FILL).
The EST-44 features a scrap tray that may be emptied on a periodic basis without interruption of
the flow of work and the manner in which the tank is filled ensures that the dishes are always
rinsed with fresh water instead of re-circulated water. The EST machine is designed to deliver
0.49 gallons of fresh rinse water for each rack. This water flows from the rinse and pre-rinse tank
into the wash tank and then overflows into the scrap tray carrying debris with it, thereby providing
a much cleaner environment for the wash and rinse cycles.
There are also enhancements that can be chosen when desired such as optional Vent Hood
Adaptors and other machine accessories such as stainless steel dish tables.
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Getting Started
2.2. Receiving and Installation
When you receive your new EST-44, complete the assembly by installing the scrap tray assembly
with its overflow chute, the two wrapper shields and the curtain rods, which are shipped inside the
machine. After the box has been removed from the machine, remove the left and right stainless
steel wrapper shields and bolt them in place with the nuts and bolts provided. The wrapper shield
with the extra curtain clamps mounts onto the dirty end of the machine. Next, mount the scrap
tray assembly and overflow chute into position (see section
All of the spray arms should be inserted and in place over the wash tank compartments.
There are a total of three curtains used in the EST-44; two are long- narrow, one is short- wide.
The two long-narrow curtains have shorter rods than the other two curtains. The short rods hold
the curtains at the entrance and exit of the machine.
The sketch below lists curtain positions 1 through 3.
2.2.5 Scrap Tray Assembly ).
EST-44
2
1
3
LONG-NARROW
CURTAIN
SHORT-
WIDE
CURTAINS
LONG-NARROW
CURTAIN
DISH FLOW
DISHMACHINE FRONT VIEW
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Getting Started
2.2.1. Electrical*
A 3-phase 208-240 volt AC, 60 Hz dedicated circuit should be used to supply electrical energy to
the EST-44 dishwasher (see specification sheet page 2). Connect the wire that has the
highest voltage (stinger lead) to the main contactor’s power terminal L2. Power lead wires
(L1, L2 and L3) used for the EST-44 at installation must comply with all local and State electrical
codes.
2.2.2. Plumbing*
The water supply connection is made with a ½” hot water line to the water supply inlet on the top
of the machine. The water supplied to the machine must be a minimum of 140° F for the EST44L and a minimum of 180° F for the EST-44H.
NOTES:
1. The Low Temp machine (EST-44L) can be supplied with single point water inlet kit with
braided hose included for fill and final rinse inlets connection.
2. The High Temp machine (EST-44H) comes with two water supply line connections. One
for the final rinse at 180
water will be heated to the appropriate temperature by the wash tank heater. (See
specification sheet on page 2).
There are two 2” drain connections to be made. One connection is made at either end of the
horizontal drainpipe coming from the wash tank and the other connection is mad e at the scrap
tray drain. (Instructions for installing the scrap tray assembly are provided in section
Tray Assembly
.) One of the ends of the horizontal drainpipe has a cap on it – simply move the
cap to the other end if it’s currently on the end needed for the drain connection.
2.2.3. Installation Notes
1. Tables must slant into the machine for proper drainage (for each 28" of table length
a drop of at least ¾” in table height is recommended). See
° F and the second line is to fill the wash tank with 140° F —the
2.2.5 Scrap
Figure 2.2.3a.
FRESH WATER
T
N
A
L
S
E
L
B
A
T
TO SCRAP
ACCUMULATOR
WASH
DISH FLOW
PRE-RINSE/RINSE
Figure 2.2.3a
See also installation instructions on EST-44 conveyor (Section 4. Customer Notice)
2. The scrap tray assembly is placed inside the machine for shipping. Follow the
instructions provided in section
2.2.5 Scrap Tray Assembly to properly attach the
scrap tray assembly to the dishmachine.
3.
Figure 2.2.3b shows the different settings available on the conveyor cam.
*
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 .01A Page
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205 RACKS/HOUR
4. On a 3-phase machine the water pump motors are also 3-phase and, depending on
which terminal 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 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.
5. The machine must be running to set the pressure regulator. While the machine is in
the FINAL RINSE CYCLE, adjust the pressure regulator to 20 PSI. See section
3.1.1 Rinse Pressure Regulator for detailed instructions.
Getting Started
P/N 13505.14
243 RACKS/HOUR
Figure 2.2.3b
MODEL EST-44 Installation and Operation Manual Rev. 2 .01A Page
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2.2.4. Optional Table Limit Switch
(Please see section 5 for Installation Instructions)
Getting Started
MODEL EST-44 Installation and Operation Manual Rev. 2 .01A Page
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