Adjusting the Fresh Air Exchange System

The fresh air exchange system has an adjustable vent door for ventilation. The evaporator fans draw in outside air through an air intake and discharge an equal amount of container air through an air outlet.

Note Set the disk or door position to the ventilation rate indicated on the shipping manifest.

Disk Adjustment - Low Ventilation Rates

  1. Loosen wing nut on handle bracket (See Figure below).

  2. Rotate the disk to set the indicator at the air exchange rate shown on the ventilation scale on the door. For MAGNUM PLUS Models: 0-225m3/hr (0-154 ft3/min).

  3. Tighten the wing nut.

Handle Adjustment - High Ventilation Rates

  1. Loosen wing nut on handle assembly until handle bracket will rotate over handle.

  2. Align handle bracket and wing nut over hole in handle assembly and push through handle.

  3. Pull handle down to lower ventilation door. Insert edge of ventilation door in a notch on handle. Spring loaded handle holds ventilation door in position. Air exchange rate is shown on the handle scale.

      
     
  1 Disk Scale: Low Ventilation Rates
  2 Disk Assembly with Rate Indicator
  3 CO2 Port
  4 Ventilation Door
  5 Handle Bracket
  6 Wing Nut
     
Parent topic: Servicing the Unit