Blakeslee UC-20 User Manual
BLAKESLEE
Division of The Legacy Companies
UNDERCOUNTER DISHWASHER
UC20
Blakeslee – Division of The Legacy Companies
1228 Capitol Drive
Addison, IL 60101
Phone (630) 532-5021
Fax (630) 532-5020
www.blakesleeinc.com
service@blakesleeinc.com
OWNER’S
MANUAL
2
ELECTRICAL WARNINGS
THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED
TO INSTALL ELECTRICAL EQUIPMENT.
PERSONNEL SHOULD PERFORM THE INITIAL FIELD STARTUP AND ADJUSTMENTS
OF THE EQUIPMENT COVERED IN THIS MANUAL.
READ THIS MANUAL THOROUGHLY BEFORE OPERATING, INSTALLING OR PERFORMING
MAINTENANCE ON THE EQUIPMENT.
WARNING: Failure to follow all the instructions in this manual can cause property damage, injury
or death.
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death.
WARNING: Electrical connections should be performed only by a certified professional.
WARNING: Electrical and grounding connections must comply with the applicable portions of the
National Electric Code and/or all local electric codes. Failure to comply with this
procedure can cause property damage, injury or death.
WARNING: Before connecting the unit to the electrical supply, verify that the electrical and
grounding connections comply with the applicable portions of the National Electric
Code and/or all local electrical codes. Failure to comply with this procedure can cause
property damage, injury or death.
WARNING: Before connecting the unit to the electrical supply, verify that the electrical connection
agrees with the specifications on the data plate. Failure to comply with this procedure
can cause property damage, injury or death.
WARNING: UL73 Grounding Instructions: This appliance must be connected to a grounded,
metal, permanent wiring system; or an equipment-grounding conductor must be run
with the circuit conductors and be connected to the equipment-grounding terminal or
lead on the appliance. Failure to comply with this procedure can cause property
damage, injury or death.
WARNING: Appliances equipped with a flexible electric supply cord are provided with a three-
prong grounding plug. It is imperative that this plug be connected into a properly
grounded three-prong receptacle. Failure to comply with this procedure can cause
property damage, injury or death.
WARNING: If the receptacle is not the proper grounding type, contact an electrician. Do not
remove the grounding prong from the plug. Failure to comply with this procedure can
cause property damage, injury or death.
3
WARNING: Before performing any service that involves electrical connection or disconnection
and/or exposure to electrical components, always perform the Electrical
LOCKOUT/TAGOUT Procedure. Disconnect all circuits. Failure to comply with this
procedure can cause property damage, injury or death.
WARNING: Before removing any sheet metal panels, always perform the Electrical
LOCKOUT/TAGOUT Procedure. Be sure all circuits are disconnected. Failure to
comply with this procedure can cause property damage, injury or death.
WARNING: Do not operate this equipment without properly placing and securing all covers and
access panels. Failure to comply with this procedure can cause property damage,
injury or death.
WARNING: Do not use or store gasoline or other flammable vapors or liquids in the vicinity of this
or any other appliance. Failure to comply can cause property damage, injury or death.
WARNING: In the event of a power failure, do not attempt to operate this appliance. Failure to
comply can cause property damage, injury or death.
ELECTRICAL LOCKOUT/TAGOUT PROCEDURE
WARNING:
Before performing any service that involves electrical connection or disconnection and/or
exposure to electrical components, always follow the Electrical LOCKOUT/TAGOUT Procedure.
Disconnect all circuits. Failure to comply with this procedure can cause property damage, injury
or death.
The Electrical LOCKOUT/TAGOUT Procedure is used to protect personnel working on an electrical
appliance. Before performing any maintenance or service that requires exposure to electrical
components, follow these steps:
1. In electrical box, place appliance circuit breaker into OFF position.
2. Place a lock or other device on electrical box cover to prevent someone from placing circuit
breaker ON.
3. Place a tag on electrical box cover to indicate that appliance has been disconnected for service
and power should not be restored until tag is removed by maintenance personnel.
4. Disconnect appliance power cord from electrical outlet.
5. Place a tag on the cord to indicate that unit has been disconnected for service and power should
not be restored until tag is removed by maintenance personnel.
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TABLE OF CONTENTS
GENERAL DESCRIPTION……………………… …………………… …………………………………….. 5
Model UC20…………………………………………………………………………………………… 5
Door Safety Switch…………………………………………………………………………………… 5
Digital Display………………………………………………………………………………………… 5
Detergent Pumps…………………………………………………………………………………….. 5
Heater…………………………………………………………………………………………………. 5
Scrap Screen Filters…………………………………………………………………………………. 5
Wash Cycles………………………………………………………………………………………….. 5
Pump…………………………………………………………………………………………………… 5
Motor…………………………………………………………………………………………………… 5
Control Circuit…………………………………………………………………………………………. 5
Automatic Tank Fill……………………………………………………………………………………. 5
Final Rinse Booster…………………………………………………………………………………… 5
Racks per Hour………………………………………………………………………………………... 5
Power Saving Mode…………………………………………………………………………………... 5
Wash & Rinse Arms…………………………………………………………………………………... 5
Insulation………………………………… …………………… ………………………………………. 5
INSTALLATION………………………… …………………… ……………………………………………….. 6
Visual Inspection……………………………………………………………………………………… 6
Unpacking the Dishwasher………………………………………………………………………….. 6
Leveling the Dishwasher……………………………………………… …………………………….. 6
Plumbing the Dishwasher………………………………………………........................................ 6
Fill/Rinse…………………………………………………… …… …… ………………………………. 6
Drains…………………………………………………………………….……………………………. 6
Electrical Connections……………………………………………………...................................... 7
OPERATION………………………………………………………………………………………………….. 8
Preparing the Dishwasher for Use…………………………………………………………………. 8
Soiled Ware Operation………………………………………………………………………………. 9
Loading the Dishwasher…………………………………………………………………………….. 9
Detergent………………………………………………................................................................ 10
Operating the Dishwasher………………………………………………………………………….. 10
Programmable Mode………………………………………………….…………………………….. 11
Shutdown, Cleaning & Maintenance……………………………………...................................... 11
TROUBLESHOOTING………………………………………………………………………………………. 12
Error Codes…………………………………………………………………………………………… 13
WIRING DIAGRAM………………………………………………………………………………………….. 14-18
EXPLODED VIEWS…………………………………………………………………………………………. 19-27
WARRANTY………………………………………………………………………………………………….. 28
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GENERAL DESCRIPTION
Model UC20
The UC20 undercounter dishwasher is constructed of 18 gauge stainless steel. An 18-5/16” door
opening allows for oversized ware such as 18’ x 26” sheet pans to be washed.
Door Safety Switch
The UC20 is equipped with a door safety
switch. The machine will not operate when the
door is open. If the door is accidently opened
during a cycle, the machine will stop operating.
Digital Display
The unit is equipped with a digital display
allowing simplified operational instructions.
Detergent Pumps
All units are equipped with built in detergent
dispensers and rinse dispensers.
Heater
Wash tank water is heated by electricity and
are available in 208, 240, 440, or 480 VAC.
Scrap Screen Filters
Stainless steel scrap filters are used to protect
wash pump. These filters should be cleaned
periodically throughout the washing period.
Wash Cycles
All units contain seven independent cycles:
economy, economy plus, glassware, flatware,
dishware, pot & pan, and programmable.
Control Circuit
All units are supplied with a 24 VAC control
circuit.
Automatic Tank Fill
All machines are supplied with automatic wash
tank fill.
Final Rinse Booster
Machines are equipped with a built-in electric
booster. These boosters are designed to raise
the rinse water temperature from 140°F to
180F°-185°F.
Racks per Hour
Unit is capable of washing up to 50 racks per
hour in the economy modes.
Wash & Rinse Arms
Upper and lower wash and rinse arms are
constructed of stainless steel and are
interchangeable. Periodic cleaning is required.
Insulation
The unit is fully insulated to protect the user
from excessive heat and allow the unit to
operate quietly.
Power Saving Mode
All machines have an automatic power saving
mode that regulates and reduces energy
consumption if the unit is left unattended for
over 30 minutes.
Pump Motor
The unit is equipped with a 0.9 HP motor.
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INSTALLATION
Visual Inspection
Before installing the unit, inspect the shipping container and machine for damage. A damaged container
may indicate there is damage to the machine. If there is damage to both the container and machine, do
not throw away the container. The dishwasher has been inspected and packed at the factory and is
expected to arrive in an undamaged condition. However, rough handling by carriers or others may
result in damage to the unit while in transit. If such a situation occurs, do not return the unit to
Blakeslee; instead, contact the carrier and ask them to send a representative to the site to inspect the
damage to the unit and to complete an inspection report. You must contact the carrier within 48 hours
of receiving the machine. Also, contact the dealer where you purchased the unit.
Unpacking the Dishwasher
Once the machine has been removed from the container, make sure that there are no parts missing
from the machine. This may not be obvious at first. If an item is missing, contact Blakeslee immediately
to have the missing item shipped to you.
Leveling the Dishwasher
The dishwasher must be level to operate correctly. This allows the door to open and close properly and
ensures the best results while washing. The unit comes with adjustable feet. Ensure that the unit is
level from side to side and from front to back before making any service connections.
Plumbing the Dishwasher
All plumbing connections must comply with all applicable local, state, and national plumbing codes. The
installing plumber must flush the incoming water line thoroughly prior to connecting it to the dishwasher.
Any valves that are fouled as a result of foreign matter left in the water line, and any expenses resulting
from this fouling, are not covered under the manufacturer’s warranty.
Fill/Rinse
Final Rinse water is used to fill the dishwasher’s booster and wash tank. The water supply must have
an incoming water temperature of 140°F with a dynamic flow pressure of 15 to 25 PSI at the
dishwasher.
If the incoming water supply pressure is below the required 15 PSI, an optional pressure booster pump
will be required. If the incoming water supply pressure is greater than 25 PSI, a pressure reducing valve
will be needed.
Drains
Drain connections must comply with all local and national code requirements.
Connect the tank drain to the building drain connection using 1/2 inch hose with 3/4 NPT fitting.
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ELECTRICAL CONNECTIONS
WARNING
Before performing any service that involves electrical connection or disconnection and/or
exposure to electrical components, always perform the Electrical LOCKOUT/TAGOUT
Procedure. Disconnect all circuits. Failure to comply with this procedure can cause property
damage, injury or death.
Refer to the unit’s data plate before making any electrical connections.
Any connections must correspond to the information specified on the data plate. A fused disconnect
switch or circuit breaker (not supplied) MUST be installed in the electrical supply line for the
dishwasher.
This service connection must meet all local and national electrical code requirements. All connections
are made at one common location in the control box. The control box cover is lipped and can be
opened by removing two (2) #10-32 screws.
Use ¾ ” knockout hole in back of dishwasher to connect to terminal block located on front of unit.
Incoming connection shown below.
240 Volt 1 Phase
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OPERATION
Preparing the Dishwasher for Use
1. Ensure that all spray arms spin freely and that scrap filter is properly installed.
2. Close dishwasher door.
3. Turn on main water supply to dishwasher.
4. Turn on main power supply to dishwasher.
5. Press dishwasher Power On/Off switch to fill dishwasher. Blue indicator light will appear.
6. The default language that appears on the display screen is set to English. The default
temperature that appears on the display screen is set to Fahrenheit. To change either one of
these settings, press and hold the Select Cycle Up and Down Keys simultaneously for fifteen
seconds. This will prompt the dishwasher into a setup screen.To change language, press the
Select Cycle Down Key until the desired language appears on the display screen. Press the
Select Cycle Up Key to save language setting. Repeat for temperature setting. When all
selections have been made, depress the Start/Enter switch to exit the setup screen.
7. Load Washer (see proper procedures for scraping and loading ware)
8. Close dishwasher door.
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SOILED WARE OPERATION
To increase speed and efficiency and reduce breakage, a few simple rules need to be observed:
• All food must be removed from dishware before placing them in stacks. This will maintain cleaner
wash water and reduce detergent usage.
• Stackable ware, such as dishes and trays, should have food debris removed and be placed in
manageable stacks. A “buildup” area should be designated for these stacks until dish racks are filled.
• Items such as coffee cups, glasses and bowls, do not stack well and should be placed directly into
racks for transport.
• When racks are filled, they should be kept in the buildup area until they can be washed.
• Good organization is key to speed and efficiency in dish room operation, as well as reduced
breakage.
• Silverware should be presoaked in a sink or other container to keep food particles from drying out.
Silverware should then be placed in an appropriate rack and sent through the dishwasher.
Note: When placing silverware in flat racks, do not overload. The silverware should be spread out
evenly in the rack so the surfaces are exposed and can be cleaned by the dishwasher’s spray.
Note: As much as possible, keep soil from entering the dishwasher. This will help maintain cleaner
wash water and reduce detergent usage.
LOADING THE DISHWASHER
Wash similar dishes at the same time, as often as possible, to reduce sorting once the dishes have
been cleaned. When several racks in the buildup area have been filled, run them through the
dishwasher one after the other. This will allow the loading operator to return to scrapping and stacking
.
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