Why does the compressor in my Multifunction Power System shut off while the generator and/or PTO is under load?

Multifunction Power Systems have an engine load detection feature which will give operational priority to the generator and PTO, disabling the compressor if necessary to maintain optimum engine rpm.

In Kubota powered units, while operating the compressor at the same time as the generator and PTO (if equipped), when engine rpm drops to 3400 the system will close the compressor inlet valve to relieve some of the load and allow engine speed to recover.

If Kubota engine rpm continues to drop to 3200 rpm the compressor clutch will disengage to completely remove the load of the compressor, allowing engine rpm to recover.

In Cat powered units, while operating the compressor at the same time as the generator and PTO , when engine rpm drops to 2600 rpm the system will close the compressor inlet valve.

If Cat engine rpm continues to drop to 2550 rpm the compressor clutch will disengage to completely remove the load of the compressor.