American Dish Service INSTALLATION INSTRUCTIONS Model L-90-3DW-S, L-90-3DWC-S Available in 60, 72, 90-second Time Cycles Door-type, Single-Rack, Chemical Sanitizer, Dump & Fill Dishmachine Listed by UL #E68594, NSF/ANSI 3, ASSE 1004 #933, LA Test Labs File M-780089, Mass. License P3-0111-306 If you have questions, call 800-922-2178 or visit our website at www.AmericanDish.
READ Manufacturer’s Manual before Using this Product. For your safety read and observe all cautions shown throughout these instructions. While performing installations described in this booklet, wear approved Personal Protective Equipment, including Safety Eye-Wear. CHEMICALS— There are potentially hazardous situations when working with industrial cleaning chemicals for dishmachines. See chemical manufacturer’s safe practices and MSDS sheets for handling and installing chemicals and supply containers.
#7 “CLEAN CIRCUIT” means the electrical circuit breaker for the dishmachine supplies no other outlets, machines, or lights. GFCI outlets are not recommended for commercial dishmachines; ADS recommends that a single-rack machine be installed with the wire connection (hard-wired) directly from the circuit breaker. If a plug and socket are used to provide electrical power to a dishmachine in a commercial kitchen, then according to electrical code it must be a GFCI, but not all GFCIs are the same.
Showing L-3DW-S control box, chemical pumps, prime switches Ground screw in junction box Showing power connection box for 120v wiring Line connection spades for L1, Neu (arrow 1 & 2) IT IS RECOMMENDED THAT THIS EQUIPMENT BE INSTALLED USING A NEW CIRCUIT BREAKER. THIS MACHINE DOES NOT USE A BOOSTER OR TANK SUSTAINER HEATER. PLUMBING SECTION #1 TANKLESS WATER HEATERS can be problematic for commercial dishmachines. The ADS model L90-3DWS dishmachine requires the full cycle amount of water (1.
#2 HOODS—Follow all local plumbing and mechanical codes. IMC 2012, section 507.2.2 requires Type II hoods for all commercial dishwashers except where the heat and moisture loads are incorporated into the building’s HVAC systems or dishwashing equipment designed with separate heat and moisture removal systems. A door-type, chemical sanitizing dishwasher is rated at 4770 Btu/h by table 5E, ASHRAE Research Project #1362, 8/5/2008.
Water Pressure for Filling Minimum pressure needed at the machine is 15 psi DURING the fill. This is called FLOW pressure. STATIC pressure readings can be misleading and may drop to “0” during fill. With flow pressures below 15 psi, additional measures will be needed to resolve the problem. The first suggestion is to run 3/4" pipe directly from the water heater to the dishmachine.
CHEMICAL FEEDERS SECTION You must wear approved safety eye-wear before connecting chemicals. Read the chemical manufacturer’s MSDS sheets. Chemicals can damage or corrode plumbing and stainless parts of the dishmachine. Do not run chemical lines over controls or plumbing. Always secure chemical lines and check regularly for leaks. If not properly handled, chemicals can cause serious bodily injury.
CHEMICAL FEEDER PUMPS ADS provides three (3) peristaltic pumps to dispense liquid chemicals Chemical feed lines are color coded “Red” Detergent, “Green” Sanitizer, “Blue” Rinse-aid Pick-up tubes are provided for chemical product containers Sanitizer (chlorine) concentrations should be set at 50 parts per million Inspect the transfer tubing for any cuts or holes, keep them protected and secured out of the way Showing deter, rinse, sanitizer external pumps Showing sump, drain ball, pump filter Typical n
CHEMICAL LINES—Place color coded tubes into proper chemical containers. The containers need to be as close to the machine as possible and at floor level. This may require shortening of the flexible chemical transfer tube. On the control box, there are chemical prime switches. There is a decal identifying each switch. To prime chemicals use these momentary prime switches, verifying that all three pumps rotate.
The arrow is pointed at the left-side wheel of the cam which is used to lengthen or shorten the low cam or the time ON for the respective switch. Adjustable cams are colored either black or gray. Cam timer adjustment tool Chlorine test strips Spray arm pressure tester #088-1048 Looking at the front of the cams with the cam timer assembly sitting on its mounting base~read left to right #1 Cam: The white cam on the left is the master cam. It controls the total time of the cycle and is not adjustable.
TUNING A DUMP & FILL MACHINE SECTION Tuning is essential for proper cleaning; do not skip this IMPORTANT PROCEDURE The key to understanding proper tuning is to realize that the drain sequence cannot be changed. It is a fixed time function and the regulator of the cycle between wash and rinse. Therefore, all tuning is accomplished by setting or adjusting the fill cam in relationship to the fixed drain cam.
DOOR AND ARM SECTION For the L-3DW-S in-line model, a conversion kit (088-1061) is available to change to a corner configuration. For the L-3DWC-S corner model, a conversion kit (088-1062) is available to change to an in-line configuration. The “L-3DW-S-3-doors-up” model is not convertible. Showing misaligned arm, same is true for inline Showing correct arm alignment Care should be used in transporting and placing the machine, watch that the door arm is not twisted or bent.
6 TO OPERATE, turn on the main power circuit breaker and switch the dishmachine master switch to ON position. Remove spray arms and manually fill the machine with water using the fill switch (labeled FILL). This switch is located on the front of the control box. Run one complete cycle by closing the doors (optional auto/start machine only) or pushing the start switch (labeled START). This is the flush cycle, which removes installation debris from wash tank and pump.
