Vogt TUBE-ICE 03TA, Service Manual, Page: 64 / 122

03TA Service Manual
MAINTENANCE
3/31/14
7-2
Sanitizing Procedure
1. After pumping machine down, set “Clean/Off/Ice” selector switch (SS) to the “Off” position.
2. Remove ice from storage area.
3. Shut off water supply and drain water tank (7) by opening drain valve (39). Remove any loose sediment
from tank.
4. In a clean container, mix 6 gallons of warm water (90 ° F–115 ° F / 32 ° C-46 ° C) and 9.6 ounces of Nu-
Calgon
®
IMS-II Sanitizing Concentrate or equivalent. Note: Concentration should be 200-ppm active
sanitizing solution. (Nu-Calgon
®
IMS-II: 1.6 ounces of sanitizer per 1 gallon of water = 200 ppm).
Note: Tank capacity = 6 gallons
5. Close drain valve (39) and fill water tank with sanitizing solution. Close the petcock (adjustable blow
down) on the water pump.
6. To run the pump only, set the selector switch (SS) to the “Clean” position and press “Start” button to
circulate the sanitizing solution.
7. Mix an additional 2 gallons of warm water (90 ° F–115 ° F / 32 ° C-46 ° C) and 3.2 ounces of Nu-Calgon
®
IMS-II Sanitizing Concentrate or equivalent in the clean container. Note: Concentration should be 200
ppm active sanitizing solution. (Nu-Calgon
®
IMS-II: 1.6 ounces of sanitizer per 1 gallon of water = 200
ppm).
8. Submerge a clean sponge in the sanitizing solution and wipe all inside surfaces of water box and water
box cover, including the makeup water float valve.
9. With the water pump running, add the additional 2 gallons of sanitizing solution to the water tank. Install
water box cover on water tank and allow sanitizing solution to circulate for at least 20 minutes.
10. While circulating sanitizing solution, open petcock valve (adjustable blow down) and allow solution to
flow down the drain. With petcock valve open, allow water to circulate for a minimum of 3 minutes.
11. Press “Stop” button to stop pump, then drain and flush water tank with fresh water. Open water supply to
machine.
12. To sanitize inside the ice storage area, flood the area with sanitizing solution, making sure to wet all
surfaces completely for at least 60 seconds. Note: Concentration should be 200-ppm active sanitizing
solution. (Nu-Calgon
®
IMS-II: 1.6 ounces of sanitizer per 1 gallon of water = 200 ppm).
13. Drain, flush tank and refill with fresh water.
Return machine to ice making operation
1. Make sure the water tank drain valve is closed, and the “Selector” switch is in the “Off” position. Turn
on the water supply and refill tank with clean water.
2. Manually open the thaw gas solenoid valve “D-valve” (18), by running the stem in. This will allow the
pressure to rise in the evaporator and allow the machine to operate. After approximately 1 minute, put
“D-valve” back into the automatic position.
3. When tank is full, turn the selector button to the “Ice” position and push the “Start” button for immediate
start-up in the ice production mode.
4.
Make use the adjustable blow down petcock is adjusted properly.
NOTE:
The petcock should be adjusted to the minimum rate required to maintain production of clear
ice. (Should be no more than 1 gallon/5 minutes)