3651 Walnut Avenue, Chino, CA 91710

Phone: (909) 627-2453 • Web Site: MendaPump.com

© 2016 DESCO INDUSTRIES INC.

Employee Owned

TB-4015 Page 4 of 5

3. Replace the main filter. Ensure the main filter is placed inside the alignment pins so that the

interlock switch is depressed.

4. Replace the filter cover and ensure a proper fit to the bottom housing. Hook both latches into

the filter cover and press down carefully to engage each latch to the base.

5. Reconnect power cord and turn system on.

6. If the unit does not operate, refer to the troubleshooting section.

Caution

To prevent overheating, units should not be operated with a blocked filter condition, or with dust

obstruction of inlets or outlets.

Model 35470

Filter replacement indication

As fumes are filtered inside the unit, any particulate will be captured and over time will start

to clog the filter. This clogging will result in a reduction of the airflow, which may reduce the

amount of fumes extracted from the work area. Once the filter starts to become blocked an

audible alarm will sound from the main unit. This is to signify that filter replacement is required.

35472, 35473 - HEPA/GAS Filters Only

As fumes are filtered inside the unit, any particulate will be captured and over time will start to

clog the filter. The coarse particles are collected in the pre-filter while fine particulate will be

collected in the HEPA filter. This clogging will result in a reduction of the airflow, which may

reduce the amount of fumes extracted from the work area. Once the filters starts to become

blocked an audible alarm will sound from the main unit. This is to signify that filter replacement.

When using a HEPA or Gas Filter initially replace the pre-filter (35471). If this does not silence

the alarm then replace the main filter too.

Pre-filters should be replaced approximately every 4 – 6 weeks depending on the application.

We recommend that a stock of replacement filters be kept for optimal extraction performance

and minimum down-time. MENDA part number 35471.

Warning! Do not attempt to clean filters. Attempted cleaning can damage filters and cause

potential risk to health and equipment.

Note: MENDA recommends replacement of Main Filters annually as a minimum. Use only

original replacement filters.

Problem

Possible Cause

Check

No air flow

No Power

Check On/Off switch

Check power outlet

Check power cord

Check safety interlock switch

Poor

Air Leak

Check hose/arm for leaks

Performance

Check hose/arm for proper installation

Check hose/arm for partial clogging