Hobart UW50 Operator’s Manual
UW50 UTENSIL WASHER
MODEL
UW50 ML-27838
(Electric
machines only)
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 18241 Rev. J (July 2013)
TABLE OF CONTENTS
GENERAL ..............................................................................................................................................................3
INSTALLATION ......................................................................................................................................................3
Unpacking ........................................................................................................................................................3
Installation Codes ............................................................................................................................................3
Location ...........................................................................................................................................................3
Installation Diagrams .......................................................................................................................................4
Plumbing Connections .....................................................................................................................................7
Gas Connection (When Specied) ...................................................................................................................7
Steam Connection (When Specied) ...............................................................................................................7
Venting Required With Gas Heat (Optional With Steam or Electric Heat) .......................................................8
Rate Of Exhaust Flow Calculations .................................................................................................................9
Detergent Feeder (Optional By Others) .........................................................................................................10
Rinse Agent Feeder (Optional By Others) .....................................................................................................10
Vent Exit .........................................................................................................................................................10
Vent Fan Control (Optional); Power Vent (Optional) ......................................................................................10
Electrical Connection .....................................................................................................................................10
OPERATION ......................................................................................................................................................... 11
Controls (Fig. 3) .............................................................................................................................................11
General Operating Instructions ......................................................................................................................12
Cleaning the Utensil Washer ..........................................................................................................................12
Dos and Don'ts For Your New Hobart Utensil Washer ...................................................................................13
MAINTENANCE ...................................................................................................................................................14
Motor ..............................................................................................................................................................14
Wash and Rinse Arms ....................................................................................................................................14
Deliming .........................................................................................................................................................14
TROUBLESHOOTING .........................................................................................................................................15
Service ...........................................................................................................................................................16
Model UW50 Utensil
Washer With Booster
©HOBART, 2012
– 2 –
INSTALLATION, OPERATION AND CARE OF
MODEL UW50 UTENSIL WASHER
SAVE THESE INSTRUCTIONS
GENERAL
The UW50 Utensil Washer is the answer to volume utensil washing problems in your kitchen, bakery or
supermarket operation. The UW50 occupies a minimum amount of oor space (under 48" x 43" with door
open) and does not require separate dishtables. The upper portion of the door raises, while the lower portion
swings out to provide a drain platform. The rack can then be pulled out for easy loading and unloading.
The program selector lets you select a 2-, 4- or 6-minute cycle; each wash cycle is followed by a dwell
and a 15-second rinse. The two upper and two lower wash arms provide thorough cleaning. Four rinse
arms provide a sanitizing rinse at the end of each cycle. The 5-horsepower pump produces 343 gallons
per minute.
The UW50 may be ordered with steam coil, electric or gas tank heat. A top-mounted electric booster is
also available. When equipped with a top-mounted electric booster, a spray hose and nozzle is provided
on the left side of the machine. On models without top-mounted electric booster, the spray hose and
nozzle can be installed in the eld as an accessory. All machines are equipped with a pressure reducing
valve to be adjusted during installation.
Features include: sloping strainer system, self-closing drain with overow, timed ll, wash and rinse
thermometers and rack with inserts for trays. The at rack can accommodate a 140-quart Hobart mixer
bowl.
INSTALLATION
UNPACKING
Immediately after unpacking the UW50, check for possible shipping damage. If the UW50 is found to be
damaged, save the packaging material and contact the carrier within 15 days of delivery.
If the Utensil Washer is lifted with a lift truck, place the forks so the drain assembly under the tank is not
damaged.
Prior to installation, test the electrical service to ensure that it agrees with the specications on the data
plate located below the controls (lower right front).
INSTALLATION CODES
Installation must be in accordance with state and local codes, with the national Fuel Code, ANSIZ223.1
(latest edition), if applicable, and the National Electrical Code ANSI/NFPA70 (latest edition). In Canada,
the installation codes are: CAN/CGA B149.1, CAN/CGA B149.2 and CSA 22.1 (latest edition).
LOCATION
Set the machine in place after the nal oor covering is installed. Make sure the machine is level before
making any plumbing connections. Machines equipped with gas heat require a minimum 3" clearance
from the rear of the ue to any combustible construction. Allow at least 3" at the rear and 18" at the sides
of the machine as a suggested minimum for service access. Allow 13" in front of the machine for the door
to lower and sufcient additional space for the operator to work.
– 3 –
Drain lever located inside of tank.
CONNECTION INFORMATION
T)
MODEL: UW-50
Electrical and grounding connections
must comply with the applicable portions
of the National Electrical Code and/or
other local electrical codes.
Plumbing connections must comply with
a
WARNING
ELECTRIC
00-812969
REV E
WALL
(*AFF - ABOVE FINISHED FLOOR)
LEGEND
E1 ELECTRICAL CONNECTION (INCLUDING ELECTRIC HEA
1-1/4" CONDUIT HOLE, 9" AFF.
(WHEN ORDERED); 3/4" CONDUIT HOLE; 77-1/16" AFF
P1 COMMON WATER CONNECTION: 180°F WATER MIN.
1/2" FPT, 73" AFF.
E3 ELECTRIC CONNECTION-VENT FAN CONTROL
3 3/4"
2 3/8"
1"
SUPPLIED BY 3/4" LINE FITTED WITH 3/4" TO 1/2"
ADAPTER (SUPPLIED BY OTHERS).
25 1/2"
RA
H
H
20 1/2"
47 3/8"
21 15/16"
12 5/8"
15 3/4"
14 3/16"
E2 ELECTRIC CONNECTION-DETERGENT/RINSE AGENT
FEEDERS: 1/2" CONDUIT HOLE; 9" AFF
10 15/16"
7 3/8"
11/16"
3"
SUPPLIED BY 3/4" LINE FITTED WITH 3/4" TO 1/2"
P2 DRAIN: 2" FPT, 5-5/8" AFF TWO CONNECTIONS.
P3 COMMON WATER CONNECTION WITH BOOSTER
(WHEN ORDERED); 110°F MIN., 1/2" FPT, 73" AFF.
27"
D
D
7 15/16"
19 1/2"
29 11/16"
ADAPTER (SUPPLIED BY OTHERS).
E1
25 5/8"
PIPE PLUG TO ACCESS TAPPED HOLE; 69-3/4" AFF.
18"
ACCESS (BOTH ENDS)
SUGGESTED MINUMUM
CLEARANCE FOR SERVICE
E1P1P3 E2E3 P4 P2P5 V1
P2
22"
17 1/2"
EXPANSION OF AIR. (NEED NOT BE CONNECTED TO
EXTERNAL VENT); IF REQUIRED,VENT HOOD TO
V1 VENT EXIT: 7" X 11" X 10" HIGH TO ALLOW FOR
P4 DETERGENT PROBE SENSOR: REMOVE CAP AND STUD
ASSEMBLY TO ACCESS 7/8" HOLE, 26-3/8" AFF
P5 RINSE AGENT FEEDER: 1/8" NPT, REMOVE 1/8" NPT
e
.
d
PROVIDE 400 CFM EXHAUST.
BROKEN LINES INDICATE
V1
46 7/8"
E3
(WHEN ORDERED)
BROKEN LINES INDICATE
VENT FAN CONTROL
E3
BOOSTER OUTLINE
(WHEN ORDERED)
P5
P1
P3
79 3/4"
78"
28 1/8"
FLOOR LINE
FOR SUPPLY CONNECTION USE
WIRES SUITABLE FOR AT LEAST
90°C OR EQUIVALENT.
1
FLOOR LINE
68 1/16"
9"
E1
E2
AND 15KW ELECTRIC BOOSTER
P2
P4
26 3/8"
69 3/4"
73"
77 1/16"
81 9/16"
WITH
DOOR UP
35 1/2"
E2
E1
6 13/16"
5 5/8"
P2
UW-50 WITH 10KW ELECTRIC HEAT
SINGLE POINT ELECTRIC CONNECTION
OF VALV E, PLUG OPPOSITE SIDE.
MAY BE DRAINED TO EITHER SIDE
UW-50 WITH 10KW ELECTRIC HEAT
SINGLE POINT ELECTRIC CONNECTION
(CONTROLS AND 5HP PUMP MOTOR)
(CONTROLS AND 5HP PUMP MOTOR)
DEVICE
MAXIMUM
PROTECTIVE
OVERCURRENT
SUPPLY
CIRCUIT
MINIMUM
AMPACITY
CONDUCTOR
AMPS
RATED
ELEC.
SPECS.
DEVICE
MAXIMUM
PROTECTIVE
OVERCURRENT
SUPPLY
CIRCUIT
MINIMUM
AMPACITY
CONDUCTOR
AMPS
RATED
ELEC.
SPECS.
100100
1
1
100100
93.9
86.3
240/60/3
208/60/3
7070
60 60
50.3
46.2
240/60/3
208/60/3
50 50
43.8
480/60/3
30 30
23.5
480/60/3
eeting ASSE-1010 STANDARD
m
(
r
o
t
s
e
r
r
pplicable sanitary, safety and plumbingcodes. Drain and fill line configurationsvary, some methods are shown on this drawing.
ater hammer a
ressure regulator furnished.
or best results.
42 9/16"
WITH DOOR OPEN
3" MINIMUM
V1
28 7/16"
P3
P1
WALL
P5
P4
FLOOR LINE
BROKEN LINES INDICATE
PRE-WASH SPRAY HOSE
(WHEN ORDERED WITH BOOSTER)
MISCELLANEOUS NOTES:
All dimensions taken from floor line may be increased
by up to 1-1/8" with leg adjustment.
Net weight of machine: 640 lbs. w/o booster
Domestic shipping weight: 782 lbs. w/o booster
Net weight of machine: 691 lbs. w/booster
Domestic shipping weight: 833 lbs. w/booster
Shipping dimensions:
60" X 38" X 85" high.
Size of racks:
40-7/8" X 22-7/8" X 4-1/8"
UW50 with 10KW Electric Tank Heat with or without 15KW Electric Booster – Installation Diagram: D-812969 sheet 1
– 4 –
Drain lever located inside of tank.
CONNECTION INFORMATION
PLUMBING NOTES:
or equivalent) to be supplied (by others) in
common water supply line at service connection
Recommended water hardness to be 3 grains or less
Recommended building flowing water pressure to th
dishwasher is a minimum of 25 PSI.
P
For convenience when cleaning, water tap should be
installed near machine with heavy duty hose an
squeeze valve.
19"
47 3/8"
Electrical and grounding connections
must comply with the applicable portions
of the National Electrical Code and/or
other local electrical codes.
Plumbing connections must comply with
a
WARNING
5/16"
P7
P8
1/2"
WALL
E3
12 3/8"
MODEL: UW-50
STEAM
00-812969
REV E
1-1/4" CONDUIT HOLE, 9" AFF.
(*AFF - ABOVE FINISHED FLOOR)
LEGEND
E1 ELECTRICAL CONNECTION (MOTORS & CONTROLS);
E2 ELECTRIC CONNECTION-DETERGENT/RINSE AGENT
FEEDERS: 1/2" CONDUIT HOLE; 9" AFF
12 5/8"
20 1/2"
10 15/16"
9"
15 3/4"
11 3/16"
14 3/16"
21 15/16"
E3 ELECTRIC CONNECTION-VENT FAN CONTROL
7 3/8"
(WHEN ORDERED); 3/4" CONDUIT HOLE; 77-1/16" AFF
11/16"
1"
P1 COMMON WATER CONNECTION: 180°F WATER MIN.
1/2" FPT, 73" AFF.
SUPPLIED BY 3/4" LINE FITTED WITH 3/4" TO 1/2"
3 3/4"
2 3/8"
5 13/16"
7 15/16"
3"
P2 DRAIN: 2" FPT, 5-5/8" AFF TWO CONNECTIONS.
P3 STEAM INJECTOR: 10 TO 25 PSI FLOWING,
50 PSI MAX.; 3/4" FPT; 6" AFF.
P4 DETERGENT PROBE SENSOR: REMOVE CAP AND STUD
ASSEMBLY TO ACCESS 7/8" HOLE, 26-3/8" AFF
P5 RINSE AGENT FEEDER: 1/8" NPT, REMOVE 1/8" NPT
ADAPTER (SUPPLIED BY OTHERS).
CR
SC
H
H
PIPE PLUG TO ACCESS TAPPED HOLE; 69-3/4" AFF.
27"
25 1/2"
RA
S
19 1/2"
25 5/8"
29 11/16"
e
.
9"
P3
FLOOR LINE
FLOOR LINE
P2
6"
6 13/16"
5 5/8"
UW-50 WITH STEAM HEAT
AND 15KW ELECTRIC BOOSTER
(CONTROLS AND 5HP PUMP MOTOR)
SINGLE POINT ELECTRIC CONNECTION
OF VALVE, PLUG OPPOSITE SIDE.
MAY BE DRAINED TO EITHER SIDE
UW-50 WITH 10KW STEAM HEAT
(CONTROLS AND 5HP PUMP MOTOR)
SINGLE POINT ELECTRIC CONNECTION
DEVICE
MAXIMUM
PROTECTIVE
OVERCURRENT
SUPPLY
CIRCUIT
MINIMUM
AMPACITY
CONDUCTOR
AMPS
RATED
ELEC.
SPECS.
DEVICE
MAXIMUM
PROTECTIVE
OVERCURRENT
SUPPLY
CIRCUIT
MINIMUM
AMPACITY
CONDUCTOR
AMPS
RATED
ELEC.
SPECS.
8080
70 70
64.7
59.4
240/60/3
208/60/3
2525
25 25
17.6
20.3
240/60/3
208/60/3
35 35
29.9
480/60/3
15 15
9.2
480/60/3
EXPANSION OF AIR. (NEED NOT BE CONNECTED TO
EXTERNAL VENT); IF REQUIRED, VENT HOOD TO
PROVIDE 400 CFM EXHAUST.
P6 COMMON WATER CONNECTION WITH ELECTRIC BOOSTER
SUPPLIED BY 3/4" LINE FITTED WITH 3/4" TO 1/2"
ADAPTER (SUPPLIED BY OTHERS).
(WHEN ORDERED); 110°F MIN.,1/2" FPT, 73" AFF.
E1
D
D
V1 VENT EXIT: 7" X 11" X 10" HIGH TO ALLOW FOR
P7 STEAM COIL: 10 TO 25 PSI FLOWING, 50 PSI MAX.,
3/4" FPT, 19" AFF.
P8 CONDENSATE RETURN: 10 TO 50 PSI FLOWING, 3/4"
FPT. 12-3/8" AFF, (BUCKET T YPE TRAP FURNISHED).
18"
ACCESS (BOTH ENDS)
SUGGESTED MINUMUM
CLEARANCE FOR SERVICE
E1 E2V1
P2
P2
22"
P5P6
P4
17 1/2"
P8
P7
P1 P3 E3
BROKEN LINES INDICATE
BOOSTER OUTLINE
(WHEN ORDERED)
V1
46 7/8"
P5
E3
P1
P6
(WHEN ORDERED)
BROKEN LINES INDICATE
VENT FAN CONTROL
79 3/4"
28 1/8"
78"
68 1/16"
E1
E2
P8
P4
P7
26 3/8"
69 3/4"
73"
77 1/16"
81 9/16"
WITH
DOOR UP
35 1/2"
d
E2
E1
P2
eeting ASSE-1010 STANDARD
m
(
r
o
t
s
e
r
r
pplicable sanitary, safety and plumbingcodes. Drain and fill line configurationsvary, some methods are shown on this drawing.
ater hammer a
ressure regulator furnished.
or best results.
42 9/16"
28 7/16"
WITH DOOR OPEN
3" MINIMUM
V1
P6
P1
WALL
P5
P4
FLOOR LINE
BROKEN LINES INDICATE
PRE-WASH SPRAY HOSE
(WHEN ORDERED WITH BOOSTER)
P3
MISCELLANEOUS NOTES:
All dimensions taken from floor line may be increased
by up to 1-1/8" with leg adjustment.
Net weight of machine: 640 lbs. w/o booster
Domestic shipping weight: 782 lbs. w/o booster
Net weight of machine: 691 lbs. w/booster
Domestic shipping weight: 833 lbs. w/booster
Shipping dimensions:
60" X 38" X 85" high.
Size of racks:
40-7/8" X 22-7/8" X 4-1/8"
UW50 with Steam Coil Tank Heat with or without 15KW Electric Booster – Installation Diagram: D-812969 sheet 2
– 5 –
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