Parker SC80, Operator'S Manual

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replace it. Ensure that air pressure is removed from the machine prior to removing the filter element.
On units that have the Control Center option installed the filter differential can be checked on the control
board.
The coalescing element should be changed annually. To change the filter element:
• Remove the bolts that secure the filter housing cover.
• Remove the wing nut that secures the filter cap to the element.
• Remove the filter cap.
• Remove the existing element from the housing.
• Install the replacement element.
• Reinstall the filter cap and wing nut
• Reinstall the filter cover.
Condensing Coil (Air Cooled Units)
The condensing coil should be cleaned weekly. Ensure that air pressure is removed from the system
prior to cleaning the condenser. The condenser can be cleaned by using a vacuum or compressed air. If
the condenser is not clean after it is blown out with compressed air or vacuumed contact the factory for
assistance.
Condenser (Water Cooled Units)
The water cooled condenser should be checked and cleaned annually if necessary. To check the
condenser, water flow to the condenser should be shut off, air flow to the machine should be shut off,
and the unit should be taken out of a run mode. The end bonnets then need to be removed exposing
the tube side of the condenser. The tube side should be inspected for any debris and cleaned. If soft
deposits are found they can be cleaned using a pneumatic tube cleaning gun which forces plugs down
the tubes. Some have a brush between two rubber plugs and others are specially designed plugs which
scrape the tube walls as they travel down the tube. If scale is found special equipment is required to
clean the tubes. These cleaning systems utilize a flexible shaft which rotates a brush as it is fed down
the tube, they can also simultaneously flush out the tubes with water. There is a wide variety of
brushes and tools available that attach to the shaft to clean both soft and hard deposits.
Drain Line Y-Strainer
The drain line y-strainer should be cleaned weekly. Air flow and air pressure should be removed from
system before proceeding. To clean the y-strainer:
• Turn the ball valve on the strainer assembly to the closed position
• Remove threaded cap at the end of the ball valve assembly.
• Clean the screen inside of the cap by rinsing it under water.
• Reinstall the screen and cap
• Return the ball valve to the open position
High Pressure, Low Pressure, & Fan Control (AC units only)
The refrigeration pressure switches should be checked monthly to ensure that they are adjusted to the
proper settings. Please refer to the applicable electrical drawings for your unit.