Blakeslee UC-21 User manual

OWNER’S
MANUAL
BLAKESLEE
Division of Blako Inc.
UNDERCOUNTER DISHWASHER
UC-21
I.R.S. INTEGRATED RECIRCULATING SYSTEM DESIGN
1844 South Laramie Avenue
Chicago, IL 60804
Phone [phone]
Fax [phone]
www.blakesleeinc.com
[e-mail]
1149 Bellamy Road North Unit 19
Scarborough, Ontario Canada M1H1H7
Phone [phone]
Fax [phone]

Date of Installation
Serial No. Model No.
USA
Limited Warranty
Your new Blakeslee dishwashing machine is warranted for one year from date of installation shown above
against defective materials and workmanship. If any defects are found within the warranty period; parts, and
labor involved with their replacement will be covered free of charge. Service must be performed by a Blakeslee
authorized service agency. All labor to be performed during regular working hours. Overtime premium will be
charged to the customer. All warranty parts are shipped by surface transportation. If other means of
transportation is requested the customer is required to pay the premium. This warranty does not apply to
damages resulting from errors in installation on the part of other contractors, nor does it apply to machines
which have been subject to accident, misuse, or abuse. It is understood that Blakeslee’s warranty obligation
with respect to machines located outside of the United States or located in the state of Alaska is limited to the
furnishing of replacement parts only. In the state of Hawaii, repair labor is provided free of charge; travel time
and expenses paid by the customer. On the island of Oahu, repair labor, travel time and expenses are provided
free of charge. This is the entire and only warranty of Blakeslee. We neither assume nor authorize anyone else
to assume for us any other obligation or liability in connection with Blakeslee Machines.
•In no case can this warranty exceed eighteen (18) months from the date of shipment from our plant at
Chicago, Illinois
Items NOT Covered Under Warranty
1. Replacing Fuses or resetting Overloads.
Replacing a blown fuse or resetting an open overload breaker is a very simple procedure and is the owner’s
responsibility. If the machine continues to blow fuses or open the overload breaker, contact your nearest
authorized Blakeslee Service Center.
2. Adjusting Tank Heats.
Heat adjustments are covered in The Owners Manual and must be adjusted depending upon desired results.
3. Proper Loading of Dishes.
It is important that the machine owner’s personnel observe the instructions outlined in The Owners Manual.
4. Cleaning Drain Valves.
Foreign articles lodged in the drain valve seat should be removed as a part of the normal daily cleaning.
5. Cleaning Rinse or Wash Nozzles and Line Strainers.
Keeping a dishwasher clean and removing obstructions from the nozzles and line strainers will be a periodic
function of the machine owner’s personnel. The cleaning periods will vary depending upon impurities in the
water supply and cleanliness of the washing operation.
6. Final Rinse Water.
Most frequent of all complaints in any dishwashing machine is that of poor final rinse. It is the responsibility of
the owner to provide 180 to 195 degree (plus) water at 15-25 lb. flow pressure through clean unobstructed water
lines. If the machine has a factory equipped final rinse water booster, the owner must supply the booster with a
minimum of 140 degree temperature water.

INDEX
Page
Section 1 Installation Instructions * 1
Section II Operating Instructions 3
Section III Cleaning Instructions 5
Section IV Troubleshooting
Section V Optional Equipment
Section VI Illustrated Parts List
SPECIFICATIONS
MACHINE INSTALLATON DATA:
Electrical:
Volts
220
220
Phase
1 (4 wire)
3 (5 wire)
Load Amps
48.6
27.0
Construction:
Body of stainless steel construction throughout.
Wash System:
Top and bottom counter rotating spray arms.
Rinse system:
Top and bottom counter rotating spray arms.
Recirculating System:
Gallons per minute
Horsepower
Wash Tank Capacity:
6.0 gallons
180
1
Water Supply:
Inlet Temperature
Inlet Pressure *
Inlet Size
Inlet Flow
Drain Size
Water Consumption
140° F
20 psi
½” Hose
6gpm
1 ½” OD Hose
30.5 gpm
Wash and Rinse Cycle
Wash Time 105 seconds
Dwell Time 5 seconds
Rinse Time 12 seconds
Total Cycle 120 seconds
Water Heating:
An electric immersion heater rated at 9.0 KW
heats both the wash and rinse water.
Control:
Automatic wash/rinse cycle control.
Thermostatically controlled rinse temperature
* Inlet pressure should be measured at the
connection point of the dish machine.

SECTION I INSTALLATION
The Model UC21 is suitable for both under the counter and free standing installations. Access is
required to both the sides and rear of the machine for service and maintenance. Therefore, all
connections should be made with flexible hoses and conduit to ensure that access can be achieved.
SHIPMENT CHECKOUT & UNCRATING
Unit is shipped with standard commercial packing, should any damage be observed on visual
inspection of the crate; notify the freight carrier immediately, as hidden damage may exist.
No special equipment is required to uncrate the unit. However care should be taken to ensure that no
damage is caused by the implements used in uncrating the machinery.
Level the machine by adjusting legs as necessary, while maintaining counter clearance dimensions.
NOTE: If machine is not leveled properly door will not close correctly
If door rubs on right
side adjust right leg
down or left leg up
If door rubs on left
side adjust left leg
down or right leg up
FIGURE 1
INSTALLER WARNING
To protect Booster Heating Element
Do not turn on electrical power supply to dishwasher until water supply has first been connected and
you are ready to proceed with actual test operation of the machine.
-1-

WATER SUPPLY: Connect incoming water supply hose to ½” I.D. hose fitting. Water supply source
must be able to provide 140°F water minimum at 20 PSI flow pressure.
DRAIN: Connect 1 ½” drain tube to waste connection. Machines equipped with optional drain pump
will have a ¾” hose to be inserted into an elevated drain or sink (see section 5).
ELECTRICAL: Check machine data plate before making any electrical connections. All supply
connections must correspond with data plate information. Check pumps rotation, pump turns
clockwise when viewed from rear of motor; if not reverse leads.
MODEL A B C D
UC-21 33 ¼” 37 ¼” 12” 15 ½”
UC-21T 39 ¼” 43 ¼” 18” 21 ½”
UC-21XT 45 ¼” 49 ¼” 24” 27 ½”
Dimensions A & B are ± 1”
DIM. FROM
FLOOR 2” LEG 6” LEG
1 4” 8”
2 4 ½” 8 ½”
FIGURE 2
Size of Connection
1 140° Hot Water Connection 1/2”
2 Electrical Connection
(Check Data Plate Requirements to Correspond
with Correct Power Supply)
1”
3 Drain 1 ½”
-2-