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Maintenance

March 2020

Operating guidelines AS6690T / AS7690T / AS7190TO series

When scrubbing is complete, with the deck and 
squeegee raised, return to the dump/fill site. Turn  
off the key to perform the following maintenance.

Daily: 

Place the rear of the scrubber over a floor drain. 

Empty the clean water tank using the solution tank 
drain knob under the machine.

Daily: 

Empty the recovery tank using the recovery 

empty hose. Bend the soft part before removing  
the cap to control the flow.

Daily:

 Inspect and rinse the float ball cage. Inspect, 

check and clean the debris tray and clean the lid  
gasket if required.

Daily:

 Remove the squeegee, and clean. Inspect the 

blades and flip or replace them if required.

Weekly:

 Inspect the solution filter and clean  

if required.

Daily: 

Always open the recovery tank for  

battery charging.
SHELF CHARGER - Plug the connector from the 
charger to the connector on the back of the machine. 
Plug the charger power cord into the wall socket. 
ONBOARD CHARGER: Disconnect the battery pack 
from the machine connector. Plug the battery pack 
connector into the charger. Plug the charger power 
cord into the wall socket.

Daily:

 Charge the machine at the end of the cleaning 

shift or if the battery indicator is low or showing empty.

Daily: 

Leave the recovery tank lid open after it’s been 

cleaned to air out and avoid any odor formulation.

Local Viper dealer:

Phone number:

SN:

21809 3/2020

©2020 Nilfisk, Inc.

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