Hoshizaki KM-1900SAH/3 Instruction Manual page 37

2. Drain the water tank:
1) Turn off the power supply, then remove the front panel. Move the control switch to the
"OFF" position.
2) Remove the insulation panel. Remove the cap located on the front bottom part of the ice
dropping hole. See Fig. 20. Allow the water tank to drain.
3) Replace the cap and the insulation panel in their correct positions. Be careful not to
cross thread the cap.
4) Remove all ice from the storage bin. Clean the storage bin using a neutral cleaner.
Rinse thoroughly after cleaning.
5) Replace the front panel in its correct position.
3. On water-cooled model only, first remove the water from the water-cooled
condenser:
1) Make sure the power supply is off, then remove the front panel and right side panel.
2) Close the condenser water supply line shut-off valve. If connected to a closed loop
system, also close the condenser return line shut-off valve.
3) Open the condenser water supply line drain valve. If connected to a closed loop system,
also open the condenser return line drain valve.
4) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
5) Open the water regulating valve by using a screwdriver to pry up on the spring retainer
underneath the spring. While holding the valve open, blow out the condenser using the
compressed air or carbon dioxide supply until water stops coming out.
6) Close the drain valve(s).
7) Replace the right side panel and front panel in their correct positions.
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