Hoshizaki KM-81BAJ Service Manual page 49

3. On water-cooled model, remove the water from the water-cooled condenser:
1) Make sure the appliance is unplugged and the control switch is in the "OFF" position.
2) Remove the rear cover.
3) 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.
4) Open the condenser water supply line drain valve. If connected to a closed loop system,
also open the condenser return line drain valve.
5) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
6) 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.
7) Close the drain valve(s).
8) Replace the rear cover in its correct positions.
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