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STERO SD1 LOW TEMP DISHWASHER  | 

3

GENERAL

Installation, 

Operation  

and Care of 

SD1  

DISHWASHER

SAVE THESE INSTRUCTIONS

The Model SD1 Dishwasher is a low temperature (140°F recommended, 120°F minimum), chemical sanitizing, 
rack-type dishwasher for use with accessory 20" x 20" racks. It is equipped with a 1 HP thermally  protected 
(internal) pump motor. The motor must cool to restart the pump.

The revolving stainless steel ball bearing wash / rinse arms above and below provide thorough distribution of 
water jets to all dishware surfaces. Arms are easily removable for cleaning and are interchangeable. Stainless 
steel tubing connects upper and lower systems.

All three doors open together when the spring counter-balanced handle is raised. Durable door glides provide 
easy opening and closing.

The SD1 can wash up to 37 racks per hour. Water usage is 1.7 gallons per rack.

After initial manual fill, the machine automatically washes a rack of dishes, drains the wash water, and then 
refills with fresh water for the rinse cycle. The rinse water remains in the machine for the next wash cycle.  
At the proper time during each cycle, an appropriate amount of detergent, rinse aid, and sanitizer chemicals 
are pumped into the wash tank.

Cycle timing is as follows:

Wash

40 seconds

Drain

10 seconds

Flush

3 seconds

Fill

9 seconds

Rinse

20 seconds

Summary of Contents for ML-130225

Page 1: ...ivision of Illinois Tool Works Inc 1758 Corporate Circle Petaluma CA 94954 Phone 800 762 7600 Fax 707 762 5036 Website Stero com ST50409 11 14 STERO SD1 Low Temp Dishwasher MODEL SD1 ML 130225 INSTRUCTION MANUAL ...

Page 2: ...nnections 7 Drain Connection 7 Water Supply Connection 7 Electrical Connection 8 Chemical Supplies 8 Pump Priming 8 Cycle Timer Adjustment 9 OPERATION 10 Controls 10 Machine Preparation 11 Dishwashing 12 Draining the Dishwasher 12 CLEANING 13 Cleaning the Dishwasher 13 Cleaning the Wash Arms 14 Do s and Don ts for Your Stero Dishwasher 14 MAINTENANCE 14 Delime Instructions 14 Lubrication 14 TROUBL...

Page 3: ...eaning and are interchangeable Stainless steel tubing connects upper and lower systems All three doors open together when the spring counter balanced handle is raised Durable door glides provide easy opening and closing The SD1 can wash up to 37 racks per hour Water usage is 1 7 gallons per rack After initial manual fill the machine automatically washes a rack of dishes drains the wash water and t...

Page 4: ... all strainer pans 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 Check wash tank to ensure 140 operating temperature after fill RUN A 1 MINUTE CYCLE ____ 1 C...

Page 5: ...nections are made With the dishwasher in its operating location turn the threaded feet as required to level the machine front to back and side to side CONVERTING FROM STRAIGHT THROUGH TO CORNER OPERATION The SD1 is shipped from the factory for straight through oper ation To convert to corner operation move the rack track and splash guard as follows 1 Remove the two screws and nuts that secure the ...

Page 6: ... AFF P2 DRAIN 2 NPT 12 1 2 AFF MISCELLANEOUS NOTES ALL DIMENSIONS TAKEN FROM FLOOR LINE MAY INCREASE 3 4 OR DECREASE 1 2 DEPENDING ON LEG ADJUSTMENT NET WEIGHT OF MACHINE 210 LBS DOMESTIC SHIPPING WEIGHT 235 LBS SIZE OF RACKS 19 3 4 X 19 3 4 3 4 H P MOTOR PLUMBING NOTES WATER HAMMER ARRESTOR MEETING ASSE 1010 STANDARD OR EQUIVALENT TO BE SUPPLIED BY OTHERS IN COMMON WATER SUPPLY LINE AT SERVICE CO...

Page 7: ...ight side of the machine rotate the drain pan and strainer as follows 1 Remove 2 screws and nuts at the front Figure 5 and 2 screws and nuts at the rear of the drain pan 2 Turn drain pan and drain pan strainer 180 so the drain exits from the right side of the machine 3 Secure drain pan by re installing 2 screws and nuts at the front and 2 screws and nuts at the rear A 2 NPT fitting external thread...

Page 8: ... CHEMICAL SUPPLIES Place the detergent rinse aid and sanitizer containers which are obtained from an independent supplier in a location where the delivery tubes will reach them Put the red delivery tube in the detergent container white in the sanitizer container and blue in the rinse aid container Make sure the delivery tube standpipes extend to the bottom of each container PUMP PRIMING Prior to o...

Page 9: ...m is factory set to open the fill valve to fill the wash chamber at 49 5 seconds into the cycle and keep it open until 58 5 seconds into the cycle At 20 psig flowing pressure the required quantity of water 1 7 gallons is allowed to flow into the dishwasher If flowing pressure is different than 20 psig or if drain flush time has been changed the fill time will need to be increased or decreased to a...

Page 10: ... switch until the corresponding chemical reaches the end of the delivery tube The DRAIN FILL switch when pressed and held on FILL opens the fill valve and allows water to flow into the dishwasher The fill valve will remain open as long as the switch is pressed The DRAIN FILL switch when pressed and held on DRAIN opens the drain valve and allows water to drain out of the dishwasher The drain valve ...

Page 11: ...DRAIN FILL switch on Fill for approximately ten seconds Water level should be at the bottom of the ring on the drain tube 1 7 gallons Figure 14 Water to the top of the ring would be 1 9 gallons and to the bottom of the overflow hole would be 2 3 gallons The overflow hole will automatically drain any excess water Check the chemical sight tubes Figure 15 before beginning dishwashing Replenish any ch...

Page 12: ...se the doors and continue operation If the washing cycle is interrupted the cycle will continue from the time of interruption and complete the cycle None of the machine functions will operate unless the POWER switch is on and the doors are closed Occasionally check the drain pan strainer Figure 13 and clean it as necessary to prevent it from becoming clogged which could result in water splashing o...

Page 13: ...r cleaning Make sure drain pan strainer is replaced with the strainer screen down and the handles at the front and back facing up Figure 18 6 To continue washing turn the POWER switch On close the doors and press and hold the DRAIN FILL switch on FILL for 10 seconds 7 After cleaning at end of day leave doors open and allow the interior to air out and dry Cleaning the Wash Arms If the wash arms do ...

Page 14: ...DO NOT use detergents formulated for residential dishwashers DO NOT allow food soil to accumulate on the tank bottom DO NOT exceed chemical manufacturer s recommended concentrations for detergent sanitizer rinse aid or lime scale remover DO NOT use steel wool to clean ware or warewasher surface DO NOT allow foreign objects to enter the unit especially metallic contaminants NOTE Failure to follow u...

Page 15: ...ded 7 Excessive lime deposits throughout wash rinse system 8 Dirty line strainer see Figure 6 causing reduced water flow Turn off water supply remove strainer cap withdraw and clean screen and reassemble 9 Incorrect type or concentration of detergent 10 Check to make sure chemical supply hoses are in the their proper container Red in detergent blue in rinse aid white in sanitizer Also check the st...

Page 16: ...16 STERO SD1 LOW TEMP DISHWASHER ST50409 11 14 ...

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