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- 2 -

 

-Under the influence of alcohol or 

drugs. 

-While using a cell phone or other 

types of electronic devices. 

-If not in proper operating condition. 

-In outdoor areas. This machine is for 

indoor use only. 

-In areas where flammable 

vapors/liquids or combustible dusts 

are present. 

-With pads or accessories not 

supplied or approved by cwz. The 

use of other pads may impair safety. 

-In areas with possible falling 

objects. 

-In areas that are too dark to safely 

see the controls or operate machine. 

2 ,

Before operating machine: 

-Check machine for fluid leaks. 

-Make sure all safety devices are in 

place and operate properly. 

3When operating machine: 

-Use only as described in this 

manual. 

-Report machine damage or faulty 

operation immediately. 

-Wear closed- toe, non- slip work 

shoes. 

-Reduce speed when turning. 

-Go slowly on inclines and slippery 

surfaces. 

-Do not scrub on inclines that exceed 

9%   

-grade or transport on inclines that 

exceed 21% grade. 

-Follow site safety guidelines 

concerning wet floors. 

-Follow mixing, handling and 

disposal instructions on chemical 

containers. 

-Do not carry passengers on 

machine. 

-Use care when reversing machine. 

-Keep children and unauthorized 

persons away from machine. 

-Do not allow machine to be used as 

a toy. 

4.Before leaving or servicing 
machine: 

-Stop on level surface. 

-Turn off machine and remove key. 

5.When servicing machine: 

-Disconnect battery connection and 

charger cord before working on 

machine. 

-All work must be done with 

sufficient lighting and visibility. 

-All repairs must be performed by 

trained personnel. 

-Use Tennant supplied or approved 

replacement parts. 

-Do not modify the machine from its 

original design. 

-Do not jack up machine. 

-Avoid moving parts. Do not wear 

loose clothing or jewelry and secure 

long hair. 

-Do not disconnect the off- board 
charger’s DC cord from the 
machine’s receptacle when the 
charger is operating. Arcing may 

result. If the charger must be 

interrupted during charging cycle, 

disconnect the AC power supply 

cord first. 

-Do not use incompatible battery 

chargers as this may damage 

battery packs and potentially cause 

a fire hazard. 

-Inspect charger cord regularly for 

damage. 

-Keep work area well ventilated. 

Summary of Contents for ND-20

Page 1: ...ND 20...

Page 2: ...rly per the maintenance instructions provided The machine is maintained with manufacturer supplied or equivalent parts INTENDED USE ND 20 The automatic floor scrubber is intended for commercial use fo...

Page 3: ...oof motor The electric motor will spark upon start up and during operation which could cause a flash fire or explosion if machine is used in an area where flammable vapors liquids or combustible dusts...

Page 4: ...ors Follow mixing handling and disposal instructions on chemical containers Do not carry passengers on machine Use care when reversing machine Keep children and unauthorized persons away from machine...

Page 5: ...tective gloves For Safety wear eye protection 6 When loading unloading machine onto off truck or trailer Drain tanks before loading machine Use a ramp truck or trailer that can support the machine wei...

Page 6: ...e an explosion or fire Do not pick up Located near control console Located on control console and bottom side of recovery tank WARNING LABEL Batteries emit hydrogen gas Explosion or fire can result Ke...

Page 7: ...sory rail s 8 Scrub head lift pedal 9 Squeegee foot pad 10 Squeegee assembly 11 Control handle 12 Control handle start bail SCRUB HEAD TYPES 13 Speed control knob drive model 14 Emergency stop button...

Page 8: ...t the cables to the battery posts as shown Figure 2 Connect the machine s black battery cable last Use insulated tools when working near batteries HOW THE MACHINE WORKS Conventional scrubbing When usi...

Page 9: ...ny surface Performs well on buildup grease or tire marks Polishing pad White Used to maintain highly polished or burnished floors Buffing pad Red Used for light duty scrubbing without removing floor f...

Page 10: ...e assembly to bracket 3 Connect the vacuum hose to the squeegee assembl INSTALLING BRUSH PAD FOR SAFETY Before leaving or servicing machine stop on level surface turn off machine remove key and set pa...

Page 11: ...c Field Hazard Magnetic pad driver brush can be harmful to pacemaker wearers or medical implants 1 Step down on the scrub head lift pedal to raise the scrub head off the floor 2 Attach the pad to the...

Page 12: ...losion or fire Do not use flammable materials in tank s ATTENTION For Conventional Scrubbing only use commercially approved cleaning detergents Machine damage due to improper detergent usage will void...

Page 13: ...wear and damage 6 Confirm recovery tank empty and screen and debris tray is clean 7 Check scrub head skirt for wear and damage OPERATING MACHINE Turn the key 1 Press the power button 2 Lower the scrub...

Page 14: ...to floor finish 3 Wipe squeegee blades with a cloth if blades leave streaks 4 Avoid bumping the machine into posts and walls 5 When draining and refilling machine always top off the optional Severe E...

Page 15: ...ISCHARGE INDICATOR Voltageindicator Time indicator DRAINING TANKS FOR SAFETY Before leaving or servicing machine stop on level surface turn off machine remove keyand set parking brake if equipped DRAI...

Page 16: ...NK Drain the solution tank daily 1 Transport the machine to drain area 2 Todrain remaining water from solution tank pull the solution hose from the accessory rail 3 Rinse out solution tank with clean...

Page 17: ...for damage and wear Daily O 8 Batteries Charge if necessary Daily O 4 Scrub head skirt Check for damage and wear Daily O 7 Squeegee assembly drip trap reservoir Check clean 50 Hours O 10 Recovery tan...

Page 18: ...AFTER DAILY USE 1 Drain and rinse out the recovery tank 2 Remove the debris tray and empty 3 Disk scrub head Turn pad over or replace when worn 4 Insta Click pad driver brushes clean any debris buildu...

Page 19: ...remove Make sure to drain solution tank before removing filter 2 Inspect and clean the seal on the recovery tank lid replace seal if damaged Carbon Brush Replacement Replace motor carbon brushes as i...

Page 20: ...he use of incompatible battery chargers may damage battery packs and potentially cause a fire hazard IMPORTANT NOTICE The battery charger is set to charge the battery type supplied with your machine I...

Page 21: ...nd set parking brake if equipped Each squeegee blade has four wiping edges When the blades become worn simply rotate the blades end for end or top to bottom for a new wiping edge Replace blade if all...

Page 22: ...up against the front of the trailer or truck Lower the scrub head turn key off and set parking brake if equipped 4 Place a block behind each wheel 5 Using tie down straps secure the machine using the...

Page 23: ...tank Pour a 1 4 gallon 1 liter of propylene glycol based recreational vehicle RV antifreeze into the detergent tank 4 Turn machine on and operate the solution flow system Turn the machine off when th...

Page 24: ...brushes in motor Contact service Brush motor will not operate Brush motor fault has been detected See SERVICE INDICATOR CODES Faulty pad motor or wiring Contact service Worn carbon brushes in motor Co...

Page 25: ...Check lid for obstructions Defective seals on recovery tank lid Replaced seal Little or no solution flow Empty solution tank Refill solution tank Low solution flow rate set Increase solution flow rat...

Page 26: ...ing path width 500mm 500mm Brush pressure 23kg 41kg 23kg 41kg Squeegee width 763mm 763mm Brush motor 0 746KW 200rpm 0 746KW 200rpm Vacuum motor 450W 450W Voltage DC 24VDC 24VDC Maintenance Fee Battery...

Page 27: ...25 MACHINE DIMENTIONS...

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