Emerson MPR15 Series User Manual

74   Maintenance 

UM5C06B / C ( 169-2071-500 )   P0711722   Standard 10.00   May 2001 

If the unit operates in a dusty environment the optional fan filter is 

recommended.  It must be inspected and replaced, or thoroughly cleaned, at 

least every 12 months. 

 

 

 

 

Do not install a wet filter in the unit.

 

To remove the filter, simply unscrew it. Re-install it by reversing the 

operation. 

Visually inspect the intake of the airflow for any obstruction by foreign 

objects or excessive dust and dirt build-up. Open both the DC and AC 

breakers (toggle them to OFF) and remove the unit from the power shelf. 

Inspect the air outlet for obstruction by foreign objects. Visually inspect the 

air outlet of the enclosure or cabinet. If a problem is detected in the rectifier, 

contact your local Astec service facility. The unit must not be opened for on-

site servicing. 

 

 

 

Do not attempt to access the inside of the unit with a 

tool or finger. Severe electrical shock could result.

 

The rectifier contains aluminum electrolytic capacitors. For this reason, the 

rectifier must be in operation. If not in operation, once a year, the equipment 

must be energized for at least two hours to maintain the electrolytic 

capacitors in working condition. 

The rectifier shelf requires no maintenance.