Hobart SR24H, SR24C, ML-130021, ML-130022 User Manual
MODEL SR24H
MODEL SR24 SERIES DISHWASHERS
MODELS
SR24C ML-130021
SR24H ML-130022
R
701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000
www.hobartcorp.com
FORM 35309 Rev. B (Jan. 2006)
TABLE OF CONTENTS
General. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Panel Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Details and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Machine Installation Connections and Details . . . . . . . . . . . . . . . . . 6
Plumbing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Water Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Connection (Model SR24H) . . . . . . . . . . . . . . . . . . . . 8
Electrical Connection (Model SR24C. . . . . . . . . . . . . . . . . . . . . 8
Chemical Sanitizer (Model SR24C Only) . . . . . . . . . . . . . . . . . . . . . 8
Initial Filling (Model SR24H Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Priming the Booster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Booster Heater (Model SR24 Only) . . . . . . . . . . . . . . . . . . . . . . 9
Fill . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Dishwashing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chemical Dispensing Pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DOs and DON'Ts for Your New Hobart Warewasher. . . . . . . . . . 11
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Deliming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Deliming Model SR24C (Chemical Sanitizing Model) . . . . . . . . . 13
Deliming Model SR24H (Hot Water Sanitizing Model) . . . . . . . . . 14
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chemical Sensing Module — Operation and Start-Up . . . . . . . . . 16
Chemical Sensing Module — To Recalibrate Sensors . . . . . . . . 16
Chemical Sensing Module — Troubleshooting. . . . . . . . . . . . . . . 16
© HOBART CORPORATION, 2006
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Installation, Operation and Care of
MODEL SR24 SERIES DISHWASHERS
SAVE THESE INSTRUCTIONS
GENERAL
The SR24 Series Dishwashers are fully automatic, front-loading machines that are equipped with
1
/2 H.P. electric motor.
a
Standard equipment includes two standard 20" x 20" racks, dial thermometers for both rinse and
wash cycles, synchronous timer, pilot light and lower front trim panel. An over temperature light
is standard on model SR24H only. Side and top panel kits are available should a free-standing
model be desired.
The model SR24H features a built-in booster heater, while the SR24C is a low-temperature,
chemical-sanitizing model for use with 6.0% sodium hypochlorite solution (bleach) as a sanitizing
agent. If 8.4% bleach is to be used, contact Hobart service to change the sanitizer pump settings
(charges will apply).
A chemical sensing module is an available option; it indicates when chemical supplies must be
replenished.
Chemical dispensing pump(s), up to three, are available options at time of order.
INSTALLATION
UNPACKING
Immediately after unpacking the dishwasher, check for possible shipping damage. If this
machine is found to be damaged after unpacking, save the packaging material and contact the
carrier within 15 days of delivery.
PANEL ASSEMBLY
If optional panel kits are to be installed, they must be installed before positioning the dishwasher.
Refer to installation instructions (F-33163) supplied with panel kit.
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LOCATION
Prior to installation, test the electrical service to make sure that it agrees with the specifications on the
machine data plate, located on the top of the door.
Place the machine in its operating location. Before any connections are made, the machine must be
level. Use the tank seam at the top of the sump inside the tank as a reference. To level the machine,
pour enough water in the tank to reach the seam and then thread the adjustable feet in or out until the
water level is even with the seam.
The lower front panel must be removed to accommodate plumbing and electrical connections.
Remove the two screws that secure the lower front panel and the kick panel. Remove both panels.
Replace these panels after installation.
Machines without side and top panels should be anchored to the counter under which they are installed
by assembling two screws (not supplied) through the holes in the top of the tank.
The machine must be cleaned after installation and before being put into service. Refer to the
OPERATION section for detailed instructions.
DETAILS AND DIMENSIONS
143/8"
7"
WALL
183/4"
201/2"
P1
P2
LEGEND
P1 Single fill and rinse pipe connection, 3/4 "
female garden hose fitting on 6' long hose
supplied with the machine; 110°F water min.
for SR24H; 120°F water min. for SR24C.
P2 Drain pipe connection, 3/4" MPT fitting with
10' hose supplied with the machine.
E1 Location of electrical connection, SR24H only:
3
/4 " elec. connector (11/8 " dia. hole), 4" AFF.
Location of electrical connection, SR24C only:
cord and plug supplied.
INTERIOR DIMENSIONS
1. Maximum inside height from inside rack to
top wash arm is 165/8".
9" Min.
Req'd
for
SR24C
Only
E1
2. Width is 223/16".
3. Front to rear is 211/2" with door closed.
NOTE: Certain materials, including silver plate,
aluminum and pewter are attacked by sodium
hypochlorite (bleach). Refer to DOs AND
DON'Ts FOR YOUR NEW HOBART
WAREWASHER.
SR24C Net Weight of Machine: 135 lbs.
SR24C Domestic Shipping Weight: 155 lbs.
SR24H Net Weight of Machine: 146 lbs.
SR24H Domestic Shipping Weight: 166 lbs.
– 4 –
Minimum Maximum
Machine Type & Rated Supply CKT Overcurrent
Specification AMPS Conductor Protective
Ampacity Device
SR24C 120/60/1 9 15 15
SR24H 120/240 (3W)/60/1 37.6 50 50 *
or 120/208 (3W)/60/1 42.0 50 50 *
* These are 3-wire systems that require (3) #8 AWG copper
wires (90°C) including a current carrying neutral. In addition,
a fourth wire must be provided for machine ground. Do not
connect these machines to a 120 VAC circuit.
Recommended rough-in drain
location 1
minimum, reduced down to
1
/2" trade size pipe
3
/4"
FPT connector (by customer).
Recommended water service rough-in,
1
Recommended
17" or less
/2" trade size pipe minimum, with
shut-off valve and
hose fitting (by customer).
3
/4" male garden
Floor Line
NOTE: If drain hose is looped above a sink, the
loop must not exceed 38" above finished floor.
237/8"
Overall
Height
Without
Top Panel
5
34
/8" min.
5
/8" max.
35
3
/4"
P2
3
22
P1
/8"
E1
WALL
24"
15"
421/2"
165/8"
Max.
Load
Height
14"
41/8"
– 5 –
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