The Marco pumps with the standard brush holder cannot be driven by a PWM because the EMI filter is mounted in the standard brush holder and this filter is not compatible with the PWM.
All pumps can be ordered with the PWM brush holder (without the EMI filter). The minimum order quantity for this variant is 12 pieces.
If less pieces are needed, we can supply the standard pump together with the PWM brush holder as a spare part, or we can remove the EMI filter from your new pump.
The customer can replace the brush holder by himself or can order the pump without EMI filter
