Manitowoc QuietQube SD0672C Technician's Handbook page 37

Drain Connections
Follow these guidelines when installing drain lines to
prevent drain water from flowing back into the ice
machine and storage bin:
• Drain lines must have a 1.5 in. drop per 5 ft. of run
(2.5 cm per meter), and must not create traps.
• The floor drain must be large enough to
accommodate drainage from all drains.
• Run separate bin and ice machine drain lines.
Insulate them to prevent condensation.
• Vent the bin and ice machine drain to the
atmosphere. The ice machine drain requires an
18" vent.
• Drains must have a union or other suitable means
to allow in place disconnection from the ice
machine when servicing is required.
• S3070C requires base drain connection (1" FPT).
Cooling Tower Application (Water-Cooled Models)
A water cooling tower installation does not require
modification of the ice machine. The water regulator
valve for the condenser continues to control the
refrigeration discharge pressure.
It is necessary to know the amount of heat rejection,
and the pressure drop through the condenser and
water valves (inlet and outlet) when using a cooling
tower on an ice machine.
• Water entering the condenser must not exceed
90°F (32.2°C).
• Water flow through the condenser must not
exceed 5 gallons (19 liters) per minute.
• Allow for a pressure drop of 7 psi (48 kPA)
between the condenser water inlet and the outlet
of the ice machine.
• Water exiting the condenser must not exceed
110°F (43.3°C).
The Commonwealth of Massachusetts requires that
all water-cooled models must be connected only to
a closed loop, cooling tower system.
Part Number 80-1505-3 6/11
Important
37