Service manual

When a tap is opened or a valve is opened, it is like taking the knot out of the balloon and all the air is forced
out under pressure. This is called fl ow pressure, the force the balloon can expel when opened. The fl ow
pressure is always lower than the static pressure (when the knot is closed). The larger the opening, the
lower the fl ow pressure.
When there is a signifi cant drop in fl ow pressure, from static—it means the opening is large compared to the
pipe (balloon) and the pressure is dissipated too quickly. When the pipe or branch line feeding the fi xture is
sized correctly and when it is a clean line, appropriate fl ows can be maintained by the utility.
Quick Notes: Run ¾” or larger copper pipe supply lines to commercial conveyor dishmachines directly from
the water heater. Do not branch off this line for sinks or tables. Replace old pressure regulator valves
(PRV), existing booster heaters may be corroded at inlet and outlet openings, and the actual piping may be
corroded inside to half its original ID. Tankless or on-demand water heaters are not recommended.
“The chemical dispenser needs a signal for the fi nal rinse; can the fi nal rinse solenoid voltage be used to
power the dispenser?”
The answer is no.
There are wash and rinse signal terminals provided in the control box for dispensing equipment and clearly
marked with yellow decals. These are the safe sources for a signal. The fi ll and fi nal rinse solenoids run
off the machine’s transformer supplied control voltage. This power only has a one amp capacity, which is
fully used by the machine. Using the internal 120v control voltage to power a dispenser or ventilation fan will
result in machine electrical failures and can void warranty claims.
Category 3. GENERAL QUESTIONS
“How do I turn ‘on’ the machine?”
There is a master switch located on the side of the control box. Once this has been turned on, the machine
will begin to fi ll, if it is empty. After fi lling is completed (water will start fl owing into the scrap box located on
the soil table side) slide a dishrack into the machine to start the wash cycle. When the rack travels through
the machine and exits the other side that will complete the process.
“The machine did not turn on, what do I do next?”
Check the circuit breaker. Push in the roller on the door switch plunger on the front inspection door of the
machine. Look to see if a rack is sitting against a table limit switch on the clean table. Check the master
switch to see if it will operate. If these quick answers don’t work, it will require a service call.
“The Conveyor keeps running when the racks are taken out?”
The cause is likely something interfering with the tray-track switches located on the front tray track. Look for
a bowl or plate trapped behind the tray track, holding the suspended magnet tube away from the bottom.
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