STERO ML-130232 Manuel utilisateur

STERO, a division of Illinois Tool Works, Inc. 1758 Corporate Circle Petaluma, CA 94954

Phone: 800-762-7600 Fax: 707-762-5036 Website: Stero.com

ST50408 (10/15)

STERO SD3

Door-Type Dishwasher

MODEL:

SD3 ML-130232

INSTRUCTION

MANUAL

2| STERO SD3 DOOR-TYPE DISHWASHER

TABLE OF CONTENTS

GENERAL ................................................................................... 3

START-UP CHECKLIST ....................................................................... 4

INSTALLATION .............................................................................. 5

Unpacking................................................................................ 5

Installation Codes .......................................................................... 5

Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Corner Installation ......................................................................... 6

Water Requirements........................................................................ 7

Plumbing Connections ...................................................................... 7

Drain Connection ....................................................................... 7

Water Connection ...................................................................... 7

Without Electric Booster Water Heater...................................................... 8

With Electric Booster Water Heater ........................................................ 8

Venting Requirements ...................................................................... 9

Electrical Connections...................................................................... 10

Dishwasher without Electric Booster....................................................... 10

Motor Rotation (Three-Phase Machines Only) ............................................... 10

Dishwasher With Electric Booster (Separately Connected) ..................................... 11

Equipment Connections .................................................................... 11

Exhaust Fan Control.................................................................... 11

Remote Booster Control ................................................................ 11

Detergent, Rinse Aid, Sanitizer Dispensers – Tubing Installation.................................... 12

Detergent Dispenser ................................................................... 12

Rinse Aid Dispenser .................................................................... 12

Chemical Sanitizer Dispenser............................................................. 12

Detergent, Rinse Aid, Sanitizer Dispensers – Equipment Connections................................ 13

Detergent Dispenser (Figure 17) .......................................................... 13

Rinse Aid / Sanitizer Dispenser(s) (Figure 17) ................................................ 13

Setup ................................................................................... 14

Sanitizing Mode ....................................................................... 14

OPERATION ................................................................................ 15

Preparation .............................................................................. 15

Dishwashing ............................................................................. 16

CLEANING ................................................................................. 17

Do's and Don'ts for Your Stero Dishwasher .................................................... 18

MAINTENANCE ............................................................................ 18

Delime Instructions........................................................................ 18

Wash Arms .............................................................................. 18

TROUBLESHOOTING ....................................................................... 19

SERVICE ................................................................................... 20

STERO SD3 DOOR-TYPE DISHWASHER | 3

The SD3 dishwasher can be conﬁgured for both straight through or corner operation. SD3 dishwashers are

shipped from the factory in straight-through conﬁguration. Straight-through machines can easily be converted

to corner operation.

SD3 dishwashers are designed to operate in one of two modes: Hot water sanitizing mode (designated by the

letters “SH” or “SP” on the display when the machine is turned on), or a chemical sanitizing mode (designated

by the letters “SC” on the display when the machine is turned on).

The serial number can be found on the machine data plate located on the bottom of the front panel. The pump

motor is rated 2 H.P. and has thermal overload protection.

DO NOT attempt to operate this dishwasher in the chemical sanitizing mode without a properly installed, NSF

Certiﬁed, chemical sanitizer feeder (customer supplied). Contact an authorized detergent representative for

information about a chemical sanitizer feeder.

The ﬁll line incorporates an atmospheric vacuum breaker to prevent any reverse ﬂow of water from the dish-

washer into the potable water supply. The unit, once turned on, ﬁlls the wash tank to the appropriate level

and automatically stops ﬁlling once the level is reached. A ﬂoat, located in the wash tank, shuts off the heat

supply if the water level becomes too low. When the water returns to the proper level, the heating circuit is

again operational.

A frame-mounted 8.5 kW electric booster water heater is available as an option for models equipped with

electric tank heat. For SD3 models, the booster water heater is designed to maintain a minimum ﬁnal rinse

temperature of 180°F provided the incoming water to the booster heater is at least 110°F.

High-temperature SD3 models typically require a hood or vent over the dishwasher to meet local codes.

Low-temperature chemical sanitizing machines or low usage electric heat dishwashers may not require individ-

ual venting of the machine if the room is amply exhausted. Refer to page 9 for venting and hood requirements.

Verify with local codes for ﬁnal authority.

GENERAL

Installation,

Operation

and Care of

SD3

DISHWASHER

SAVE THESE INSTRUCTIONS

PRESSURE

GAUGE

Figure 1

4| STERO SD3 DOOR-TYPE DISHWASHER

START-UP CHECKLIST

BEFORE POWER IS APPLIED

____ 1. Check all utility service connections for tightness (electric, hot water and drain(s)).

____ 2. Verify drain is connected with air gap (per your local code) and properly draining.

____ 3. Check for any loose hardware.

____ 4. Check door to table for interference.

____ 5. Check free rotation of wash/rinse arms.

____ 6. Check to see that all strainer pans, buckets, and screens are in place.

AFTER POWER IS APPLIED AND WATER TURNED ON

____ 1. Verify water supply is connected properly and not leaking.

____ 2. Verify correct supply voltage and phase to machine and conﬁrm with data plate ratings.

____ 3. Close door and allow machine to ﬁll completely.

____ 4. Allow wash tank to achieve proper operating temperature.

RUN A 1 MINUTE CYCLE

____ 1. Check operation of door interlock switch.

____ 2. Check for proper pump motor operation and check for leaks.

____ 3. Check for proper tank temperatures with pumps on and off.

____ 4. Check wash tank for proper water level during start up and operation.

____ 5. Verify ﬁnal rinse temperature.

REINSTALL ANY PANELS REMOVED

STERO SD3 DOOR-TYPE DISHWASHER | 5

UNPACKING

Immediately after unpacking the dishwasher, check for possible shipping damage. If this machine is found to

be damaged, save the packaging material and contact the carrier within 15 days of delivery.

Prior to installation, test the electrical service to make sure it agrees with the speciﬁcations on the machine

data plate; this includes the optional electric booster, if equipped. The dishwasher data plate is located at the

bottom of the front panel.

INSTALLATION CODES

Installation must be in accordance with state and local codes, or in the absence of local codes, with the

National Electrical Code ANSI/NFPA 70 (latest edition). In Canada, the installation standard is: CSA C22.2 No. 1

(latest editions).

LOCATION

Before ﬁnalizing the location, make sure that consideration has been given for the electrical conduit, water

supply, drain connection, venting (if applicable), tabling (if needed), chemical feeder replenishment (if applica-

ble) and adequate clearance for opening the door.

The dishwasher must be level before any connections are made. Turn the threaded feet (Figure 2) as required

to level the machine and adjust to the desired height.

The edge of the dish table that overhangs the SD3 wash tank should be turned down and ﬁtted over the top

of the dishwasher tank (Figure 3). Apply an NSF approved sealant between the overhang of the dish table and

the inner wall of the wash tank to prevent leakage (Figure 3). Fasten the dish tables to the inner wall of the

wash tank with non-rusting truss head screws or rivets (Figure 3).

For straight-through installations, clearance at the front and 15 inches out from the dishwasher at the right

side by 27 inches above the ﬁnished ﬂoor must be provided for servicing.

INSTALLATION

Figure 2

WASH TANK

DISH TABLE

STRAIGHT-THROUGH OPERATION SHOWN

INNER WALL OF

WASH TANK

SEALANT

NUT

DISH TABLE

MACHINE SCREW

OR RIVET

Figure 3

MACHINE LEG

ADJUSTABLE FOOT

6| STERO SD3 DOOR-TYPE DISHWASHER

INSTALLATION (continued)

RACK TRACK

GUIDE RAIL

WASH TANK

DISH TABLE

CORNER OPERATION SHOWN

DISH TABLE

INNER WALL OF

WASH TANK

SEALANT

MACHINE SCREW

OR RIVET

NUT

CONTROLS MUST BE ACCESSIBLE AT

FRONT CORNER.

CORNER INSTALLATION

Before placing the dishwasher in its operating location, check machine conﬁguration. If the machine is being

installed in a corner (Figure 4), clearances of 20" out from the dishwasher under the left-hand tabling by 27"

above the ﬁnished ﬂoor and 15" out from the dishwasher at the right side by 27" above the ﬁnished ﬂoor must

be provided for servicing. For proper installation of a corner machine, the control and display should be posi-

tioned at the front corner for operator access (Figure 4).

For corner installation, rotate the rack track so the guide rail is positioned on the left side (Figure 5). For corner

machines, remove the front door deﬂector (unscrew three bolts / nuts).

Figure 4

Figure 5

For corner installations, tabling with backsplashes over

6" high require that a notch be provided to prevent

interference with the door mechanism (Figure 6).

A NOTCH MUST BE ADDED TO BACKSPLASHES

OVER 6" HIGH ON CORNER MACHINES TO PREVENT

INTERFERENCE WITH DOOR MECHANISM. NOTCH

MUST EXTEND 6" FROM FACE OF THE MACHINE.

Figure 6

6.000

STERO SD3 DOOR-TYPE DISHWASHER | 7

INSTALLATION (continued)

WATER REQUIREMENTS

Proper water quality can improve warewashing performance by reducing spotting, lowering chemical supply

costs, improving productivity and extending equipment life. Local water conditions vary from one location to

another. The recommended proper water treatment for effective and efﬁcient use of this equipment will also

vary depending on the local water conditions. Ask your municipal water supplier for details about local water

speciﬁcs prior to installation.

Recommended water hardness is 3 grains of hardness per gallon, or less. Chlorides must not exceed 30 parts

per million. Water hardness above 3 grains per gallon should be treated by a water conditioner (water soft-

ener or in-line treatment). Water treatment has been shown to reduce costs associated with machine cleaning,

reduce the need for deliming the dishwasher and reduce detergent usage.

Sediment, silica, chlorides or other dissolved solids may lead to a recommendation for particulate ﬁltration or

reverse osmosis treatment.

If an inspection of the dishwasher or booster heater reveals lime build-up after the equipment has been in

service, in-line water treatment should be considered, and, if recommended, should be installed and used as

directed. Contact your local service provider for speciﬁc recommendations.

PLUMBING CONNECTIONS

Plumbing connections must comply with applicable sanitary, safety, and plumbing

codes.

Drain Connection

The drain connection is a 1

⁄

" externally threaded pipe connected straight

down from the bottom of the wash tank (Figure 7). The connection can be

made in any direction by using the proper ﬁtting (not supplied) and routing to

the appropriate drain line.

If a grease trap is required by code, it should have a minimum ﬂow capacity

of 14 gallons per minute.

Water Connection

A suitable water hammer arrestor should be installed in the water line just ahead of the dishwasher.

DRAIN

Figure 7

8| STERO SD3 DOOR-TYPE DISHWASHER

INSTALLATION (continued)

Without Electric Booster Water Heater

The water supply line is connected to the line strainer (top rear, Figure 1) with

⁄

inch or

⁄

inch pipe. A manual

shutoff valve and pipe union are required (customer supplied).

REQUIRED INCOMING WATER TEMPERATURE

Model Sanitizing Mode Connection Water Supply

Minimum Maximum Recommended

Without Built-in Booster Hot Water Sanitizing Hot Water 180°F (82°C) 194°F (90°C) 180°F (82°C)

Without Built-in Booster Chemical Sanitizing Hot Water 120°F (49°C) N/A 140°F (60°C)

With Built-in Booster Hot Water Sanitizing Hot Water 110°F (43°C) N/A 140°F (60°C)

For the SD3 model, proper dishwasher operation requires a ﬂowing pressure of 20 ± 5 psig at the dishwasher.

If the ﬂowing pressure exceeds 25 psig, a pressure reducing valve (customer supplied) must be installed in the

water supply line. A pressure gauge (Figure 1) is provided (not installed) for veriﬁcation of proper water pres-

sure. The water pressure is monitored when the solenoid valve is open and water is ﬂowing.

The water pressure regulator must have a relief by-pass. Failure to use the proper type of pressure

regulator may result in damage to the unit.

With Electric Booster Water Heater

The water supply line is connected below the booster with the line strainer (supplied) and

⁄

" pipe. A manual

shut-off valve and pipe union are required (not supplied).

The water supply must have a minimum temperature of 110°F (43°C), and a ﬂowing pressure of 20 ± 5 psig at

the pressure gauge on top of the machine. If the ﬂowing pressure exceeds 25 psig, a pressure reducing valve

(not supplied) must be installed in the water supply line.

Incoming water temperature below 110°F (43°C) may require longer wash cycle time than the 57 second cycle;

refer to OPERATION, pages 15 – 16.

When the ﬁll / ﬁnal rinse valve is on, water from the booster tank enters the dishwasher through the ﬁnal rinse

arms. During the rinse cycle, this water is 180°F (82°C). A small amount of water will likely dribble out of the

lower rinse arm into the tank between cycles due to the natural expansion of water as it is being heated.

STERO SD3 DOOR-TYPE DISHWASHER | 9

INSTALLATION (continued)

TABLE A: HEAT DISSIPATION

Model Electric Heat 8.5 kW

Electric Booster

Latent Heat

(BTU/HR)

Sensible

Heat (BTU/HR)

Hot Water Sanitizing SD3 X4,400 1,900

X X 10,500 4,500

Chemical Sanitizing SD3 X4,300 1,900

Assumptions:

1. Machines operate 70% of each hour while in use.

2. All heat dissipated enters the room for chemical sanitizing models, 60% of heat enters room for hot water

sanitizing models with hood.

3. 70% of heat output is latent, 30% is sensible.

4. Chemical sanitizing models operate at 60% of the heat output of equivalent hot water sanitizing models.

➤

LENGTH

➤

CLEARANCE

HEIGHT

➤

WIDTH

VENTING REQUIREMENTS

NOTE: Any listed and labeled factory-built commercial exhaust hood tested in accordance with UL Standard

710 by a nationally recognized testing laboratory, must be installed according to the terms of its listing and the

manufacturer’s installation instructions.

Rate of Exhaust Flow Calculations

Based on the 2009 International Mechanical Code.

The minimum net airﬂow for Type II hoods used for dishwashing appliances shall be 100 cfm per linear foot of

hood length. The net quantity of exhaust air shall be calculated by subtracting any airﬂow supplied directly to

a hood cavity from the total exhaust ﬂow rate of a hood.

Figure 8

10 | STERO SD3 DOOR-TYPE DISHWASHER

INSTALLATION (continued)

ELECTRICAL CONNECTIONS

Electrical and grounding connections must comply with the applicable portions of

the National Electrical Code, NFPA 70 (latest edition) and / or other local electrical codes.

Disconnect the electrical power to the machine (both dishwasher and booster if

applicable) and follow lockout / tagout procedures. Be sure all circuits are disconnected.

Refer to the wiring diagram attached inside the front trim panel and to the machine data plate for service size

requirements when connecting the dishwasher. Refer to Electrical Data, below.

To access the controls area, remove the right side panel, remove the front panel and open the control panel

door. The dishwasher electrical service connection can be made through the 1

⁄

" diameter hole for

⁄

"trade

size conduit located on the right side at the rear of the machine. By removing a knockout, this hole can be

enlarged to 1

⁄

" diameter for 1" trade size conduit, if required.

ELECTRICAL DATA

Models Volts / Hz / Ph Tank Heat

Minimum Circuit Ampacity

Maximum Protective Device

AMPS

Dishwasher

ONLY

Optional 8.5 KW Electric Booster

8.5 KW

Booster

ONLY

Optional Single Point

Electrical Connection

3 Phase Only

Dishwasher and Booster

SD3

208 - 240 / 60 / 1 Electric 50 50 N/A

208 - 240 / 60 / 3 Electric 30 30 60

480 / 60 / 3 Electric 15 15 30

Compiled in accordance with the national electrical code, NFPA 70 (latest edition).

A fused disconnect switch or circuit breaker (customer supplied) must be installed in the electrical service line(s)

supplying this dishwasher and should meet the requirements of your local electrical code.

Dishwasher without Electric Booster

For single-phase machines, power supply connections are made to terminal blocks. For three-phase machines

connections are made to contactor lugs. The machine must be grounded according to electrical code(s); a

grounding lug is provided in the controls area.

Direction of Rotation of Pump

This procedure applies to 3 phase machines upon initial set up or when the pump has been replaced.

Turn on the machine and let it ﬁnish the startup making sure there is water in the tank. Start a wash cycle and

after motor starts, carefully insert a plastic wire tie into the back housing of the motor so that it touches the

fan blades. Look for an arrow on the pump that shows the direction of rotation. If the plastic wire tie is pushed

towards the opposite direction of the arrow then the pump

direction needs to be reversed.

CAUTION: Make sure the power is removed from the

machine before changing wires.

To reverse the direction of the motor, swap the positions of

two of the 3 phase wires from the machine’s power supply.

Check again the direction of rotation after the adjustment

using the method described above. Figure 9

MOTOR SHAFT

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