Delta 50-871 User Manual

9

1.   When CLEAN FILTER light illuminates, this means that the filter material needs to be changed.
2.  After installing the new clean filter, make SURE to press CLEAN FILTER for 5 seconds, at which the POWER light 

will begin to flash; PRESS the ON/OFF button to start operation.

3.  Remove the outer first stage filter (A) Fig. 9A by lifting and pulling out on the bottom of the filter. Replace the 

first stage filter depending on its condition. When you replace the outer filter, check to see if the filter has an 

air flow arrow (A) Fig 9C. If so, point the arrow inward. If the filter does not have an air flow arrow, install the 

filter either way.

When CLEAN FILTER light illuminates, this means that the filter material needs to be changed.
After installing the new clean filter, make SURE to press CLEAN FILTER for 5 seconds, at which the POWER light will 

begin to flash; PRESS the ON/OFF button to start operation.

Compressed air can be dangerous. For operator safety, do not exceed an air pressure of 30 psi. 

Do not point the air nozzle toward yourself or anyone else. Always wear safety glasses and a dust 

mask when using compressed air.

4.   Replace the filter, turn the unit "ON" and reset the digital indicator as below:
  a) To reset the machine, press the RESET (Fig. 8B) button for about 5 seconds and wait for the CLEAN FILTER 

signal to fade out. The PWR signal will start to flash; then press the ON/OFF button to run the machine.

If the pleated pre-filter has been changed 3 times, you MUST change the INNER filter once.