Nobles SpeedScrub Rider, Service Information

Speed Scrub – Operational Modes & Interlocks

Mode

Entry Sequence

Indicator

Function

−

Directional Switch Forward

−

Propel Pedal Depressed

−

Directional Switch Reverse 

−

Directional Switch in Reverse position 

−

Propel Pedal Depressed

−

Horn Sounding continuously ON & OFF (except in 

"Hospital" mode)

Scrub Mode

−

Press One Step Scrub Button 

(ON)

−

One Step Scrub LED ON

Activate Scrub Brush, Squeegee, 
Vacuum Fan & Solution Flow 
operations

−

Press One Step Scrub Button 

(ON)

−

One Step Scrub & FaST LED's ON

−

Press FaST Button (ON)

−

Solution Flow LED's OFF

−

Press One Step Scrub Button 

(ON)

−

One Step Scrub & Solution Flow LED(s) ON

−

Press FaST Button (OFF)

−

FaST LED OFF

−

Press One Step Scrub Button 

(ON)

−

One Step Scrub LED ON

−

Press Vacuum Fan/Squeegee 

Button (OFF)

−

Vacuum Fan/Squeege LED OFF

−

One Step Scrub LED OFF

−

Vacuum Fan/Squeegee LED ON

−

Lower Brush Pressure (#1) LED ON; Middle (#2) & 

Upper (#3) LED's OFF

−

Lower Solution Flow (#1) LED ON; Middle (#2) & 

Upper (#3) LED's OFF

−

Press Brush Pressure 

Decrease (-) to one LED

−

Lower Brush Pressure (#1) LED ON; Middle (#2) & 

Upper (#3) LED's OFF

−

Press FaST Button (ON)

−

FaST LED ON (Solution Flow LED's OFF)

Recovery Tank 

Full

−

Recovery Tank Full (Float 

Switch Closed)

−

Recovery Tank Full LED ON

Disable Scrub function (Operator can 
get an additional minute of operation by 
re-engaging scrub system with One 
Step button)

Battery 

Discharged

−

Battery voltage at or below full 

discharge voltage

−

Red LED (on Battery Gauge) blinking

Disable Scrub function (Operator can 
get an additional minute of operation by 
re-engaging scrub system with One 
Step button)

−

Fault LED ON and any one or more of the 

following:

Lower Brush Pressure (#1) LED ON (Right Motor)   
Upper Brush Pressure (#3) LED ON (Left Motor)     
Upper Solution Flow (#3) LED ON (Vacuum Fan)

Prevent damage to Scrub Brush 
Motors or Vacuum Fan Motor – 
Scrub function shuts off

Double Scrub 

(no water 

pickup)

Water pickup 

(no Scrub)

Accessory 

Motor  High 

Current Fault

−

Controller sensed an Over 

Current condition in the 
Scrub Brush Motors or 
Vacuum Fan Motor

Forward

Reverse

FaST Mode

Conventional 

Solution Mode

−

Press Brush Pressure 

Decrease (-) to one LED            

−

Press Solution Flow Decrease 

(-) to one LED

−

Solution Tank Empty LED ON

Disable Scrub function (Operator can 
get an additional minute of operation by 
re-engaging scrub system with One 
Step button)

Low Power 

Mode

Low Power 

Mode w/ FaST

Solution Tank 

Empty

Reduce Scrub Brush and Fan speeds 
(to prolong battery life, reduce noise, 
lower water usage)

Reduce Scrub Brush and Fan speeds 
(to prolong battery life, reduce noise, 
lower water usage)

−

Solution Tank Empty (Float 

Switch Open)

Activate Conventional solution flow 
when scrub and propel are engaged

Apply cleaning solution with no water 
pickup

−

Press Vacuum Fan/Squeegee 

Button (ON)

Collect solution on floor with squeegee, 
without scrubbing floor

−

Directional Switch in Forward position

Forward movement of machine

Reverse movement of machine

Activate FaST foam solution flow when 
scrub and propel are engaged

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