Operation
out). Check that the float switch is working properly (this will also cause the
heater contactor to pull in and drop out when actuated).
6. Replace all the strainer trays into their proper position and fill the machine.
7. Place a rack into the machine and observe the spray pattern of the pre-wash,
the wash, and the final rinse.
a. Check the titration of the wash tank at this point.
b. While the rack is in the final rinse, check for 50PPM residual chlorine in
the final rinse.
c. Observe the final rinse vacuum breaker for leaks.
8. Run a stemware or glass rack through the machine and check the results on
the glassware.
a. Observe the check valves for the rinse and sanitizer. Make sure they
are not leaking or building up chlorine crystals. If they are clean, leave
them alone.
b. Check the condition of the chemical tubing from the peri-pump to the
check valves.
c. Check the peri-pump squeeze tubes to make sure they are tight,
pumping product properly and not leaking within the peri-pump. There
should be no moisture within the peri-pump itself.
d. Observe the final rinse pressure at 20 PSI. Adjust if necessary.
9. Check the condition of the chemical tubing coming from the detergent rinse
and sani buckets, up to the machine.
10. With the machine stopped, check the roller cam bearing on the conveyor.
You should be able to move the outer cover of that roller cam bearing with
your finger. Also, keep it well greased so that the outer covering does not
freeze up.
11. Check the conveyor system. Make sure the complete system is running
smoothly.
12. Send two or three racks through the machine. Check the scrap overflow.
While the racks are running through the machine, look under the machine for
any drips or leaks coming from the machine or pump seals.
13. Send a rack through the machine and check if the 60-second off delay is
operating properly. If the relay is working properly the machine will shut off
approximately 60 seconds after the cycle start trip switch is de-activated.
14. Send a rack through and check if the cycle start trip switch is operating
properly. Sliding a dish rack into the machine activates the trip switch.
15. Using an all-purpose cleaner or stainless steel polish, clean up the outside of
the machine to keep it looking nice.
MODEL EST-66 Service & Parts Manual Rev. 1 .01A
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