Hoshizaki DCM-500BWH-OS - Manual (Page 69)

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2. On water-cooled model only, remove the water from the water-cooled condenser:
1) Make sure the control switch and the power switch are in the "OFF" position and that
the power supply is off. Remove the top, apron, and left side panels.
) Close the condenser water supply line shut-off valve and open the condenser water
supply line drain valve.
3) Attach a compressed air or carbon dioxide supply to the condenser water supply line
drain valve.
4) 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.
5) Close the condenser water supply line drain valve.
6) Replace the panels in their correct positions.