UF424 / UN324 Installation and User Manual
August 2017
8
Maintenance and Cleaning
There are 4 areas of maintenance
1. Ice making system
2. Photo eye ice level control system
3. Bin
4.
Air cooled condenser and filters
Ice making System:
Remove Scale
1. Remove front panel.
2. Turn the machine off by pressing the on /
off button.
3. Empty the ice from the storage bin
4. Remove the inner panel using the 4 thumb
screws.
5. Remove the top cover from the reservoir.
6. Shut water supply off at the reservoir by
turning the knob counterclockwise.
7. Locate the evaporator drain in the ice
machine compartment. Unplug it and drain
the evaporator.
8. Replug the drain.
9.
Mix a solution of 1.5qt/1.4L of warm water
(90
0
F/32
0
C to 110
0
F/43
0
C) and 4 ounces
of Scotsman Clear 1 Ice Machine Scale
Remover.
10. Pour the cleaning solution into the reser-
voir until it is full (a squirt bottle may be
necessary to fill reservoir with cleaning
solution).
11. Push the clean button. the machine will
operate the auger motor for approximately
20 minutes. Then it will start making ice
with the cleaning solution.
12. Add remaining cleaning solution to the
reservoir as ice is being made for the next
20 minutes. After the full 40 minutes (steps
11 & 12) the unit turn off.
13. Drain the solution from the reservoir by
removing the plug. Once drained, replace
the plug.
14. Pour clean water into the bin to melt any
ice produced during the cleaning cycle.
15. Mix a solution of 4oz/118ml of Scotsman
Clear 1 ice machine scale remover and
16oz/473ml of potable water. Use this
scale remover solution for the water reser-
voir cover, ice discharge chutes, the stor-
age bin and the inner front cover.
Sanitize Water System
16. Create a solution of sanitizer. Mix
4oz/118ml of NuCalgon IMS III and
2.5gal/9.5L of (90
0
F/32
0
C to 110
0
F/43
0
C
)
potable water to create a 200 ppm solu-
tion.
17. Pour the sanitizing solution into the reser-
voir until it is full and wait 2 minutes.
18. Turn on the water supply and press the
ON /Off button to turn the ice machine on
19. Operate the machine for at least 15 min-
utes.
20. Drain the solution from the system by pull-
ing the reservoir plug from the drain hose.
Return plug when drained.
Photo Eye ice level control
1. Mix solution of 4 ounces of Clear 1 Ice
Machine Scale Remover and 1.5qt/1.4L of
90
0
F/32
0
C to 110
0
F/43
0
C water.
2. Remove sensors from inner cover by re-
moving the white c-clip .
3. Use cotton swab and cleaning solution to
thoroughly clean photo sensors.
4. Rinse sensors with clean water.
5. Reinstall sensors in inner panel.
Ice machine cleaner contains
acids. Acids can cause burns.
If concentrated cleaner comes
in contact with skin, flush with
water. If swallowed, do NOT
induce vomiting. Give large
amounts of water or milk. Call
physician immediately. Keep
out of the reach of children.
