Monthly Condenser Cleaning; Semi-Annual Evaporator Cleaning - Follett T400A Installation, Operation And Service Manual

Monthly condenser cleaning (air-cooled ice machine only)
1. Use a vacuum cleaner or stiff brush to carefully clean condenser coils of air-cooled ice machines to ensure
optimal performance.
2. When reinstalling counter panels in front of RIDE model ice machines, be sure that ventilation louvers line up with
condenser air duct.
Semi-annual evaporator cleaning (every 6 months)
Solution A – Ice machine cleaner: Prepare one gallon (3.8L) of Follett SafeCLEAN ™
Ice Machine Cleaner (one 7 oz packet) or equivalent. Solution temperature must be at
least 120 F (49 C).
Warning: Most ice machine cleaners contain citric or phosphoric acid that can cause
skin irritation. Read caution label on product and follow instructions carefully.
Solution B – Sanitizing solution: Prepare 2 gallons (8L)
Combine 1/4 oz. (7 ml) of bleach with 2 gal. (8 L) of hot water (at least 120 F (49 C) to
form a 50 ppm solution of 5.25% sodium hypochlorite, or equivalent.
1. Disconnect power to ice machine.
2. Remove any ice machine panels required to gain access to water reservoir and
electrical control box.
3. Turn compressor switch on electrical box of ice machine to OFF position.
4. Remove water reservoir cover and block up reservoir fl oat or close water supply
valve.
5. Drain water from reservoir by releasing evaporator drain tube (Fig. 5.1) from
fl oat reservoir bracket (Fig. 5.2), removing plug from drain tube and releasing
(unclamping) pinch valve (Fig. 5.3) (if equipped).
6. Following manufacturer's instructions, prepare one gallon (3.8L) of Follett
™
SafeCLEAN environmentally friendly ice machine cleaner (one 7 oz packet) or
equivalent. Solution temperature must be at least 120 F (48.9 C).
WARNING: Most ice machine cleaners contain citric or phosphoric acid that
can cause skin irritation. Read caution label on product and follow instructions
carefully.
7. Plug drain hose, replace drain line in reservoir bracket and pour part of cleaning
solution into reservoir (Fig. 5.4), fi lling it almost to overfl owing.
8. Remove stainless steel compression nozzle (Fig. 6.1) and drain lines. Submerge in
a cup of cleaning solution while cleaning rest of system. (Flake ice machines have
no compression nozzle and drain lines.)
CAUTION: To avoid potential pitting, do not soak parts in SafeCLEAN
environmentally friendly ice machine cleaner for more than 45 minutes.
9. Restore power to ice machine (gearmotor will run; compressor and fan will not).
10. After 15 minutes, turn power OFF; drain solution from reservoir and evaporator.
11. Fill reservoir almost to overfl owing with clean, 120 F (48.9 C) water, and drain.
Repeat three times.
12. Following manufacturer's instructions, prepare 1 gallon (3.8L) of 200ppm 5.25%
Sodium Hypochlorite solution (mix 1 oz household bleach to 2 gallons water) or
equivalent. Solution temperature must be at least 120 F (48.9 C).
13. Rinse compression nozzle in clean water and submerge in a cup of sanitizing solution while following steps 14-19.
14. Connect ice transport tube (Fig. 6.2) directly onto evaporator outlet port (Fig. 6.3) without compression nozzle.
NOTE: If bin will not be cleaned at this time, place a large pan in bin storage area to catch ice or connect a separate ice
transport tube to evaporator and divert ice into separate container.
15. Fill reservoir almost to overfl owing with sanitizing solution.
16. Restore power to ice machine (gearmotor will run; compressor and fan will not).
17. After 10 minutes, turn compressor switch to ON position.
18. As unit starts to make ice, continue to pour sanitizing solution into reservoir, maintaining level just below reservoir
overfl ow.
19. Continue to make ice with sanitizing solution for 20 minutes.
20. Turn power to ice machine OFF.
21. Disconnect transport tube from evaporator outlet port. Rinse compression nozzle in clean water and reinstall on
evaporator outlet. Reconnect transport tube to compression nozzle.
22. Drain any remaining sanitizing solution from evaporator.
23. Fill reservoir almost to overfl owing with clean, 120 F (48.9 C) water, and drain. Repeat three times. Re-clamp pinch
valve, replace plug, and re-secure drain tube.
24. Unblock fl oat (or open water supply valve) and replace reservoir cover; restore power to ice machine and ensure
compressor switch is in ON position. Make ice for at least 15 minutes to fl ush any remaining solution from system (RIDE
model ice machines with long ice transport hoses may take longer to fl ush out). Discard this and all ice made during
sanitizing.
25. Inspect evaporator drain pan and drain line and remove any accumulated scale build up.
26. Replace any panels removed prior to cleaning.
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Fig. 6
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