Sanitaire SC9180D Dual-Motor HEPA Tools-On-Board Commercial Upright SC-A100 air escapes its intended channel

air escapes its intended channel and debris can drift toward the motor

a failing one is worth replacing promptly rather than bypassing

so the brushroll runs as you clean

A worn thrust member can cause imprecise brush roll control

Sanitaire SC9180D Dual-Motor HEPA Tools-On-Board Commercial Upright SC-A100 air escapes its intended channelThe Sanitaire SC9180D is a heavy duty dual motor commercial upright vacuum built for deep cleaning demanding carpets. One motor powers suction while a second drives the brushroll, delivering aggressive agitation and airflow that lifts embedded dirt from high traffic commercial floors. Dual motor system separate motors for suction and brushroll 11. 3 amp total power for strong, sustained performance HEPA filtration to capture fine dust and allergens