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MAINTENANCE

450 MM289 (3

−

94)

SOLUTION SYSTEM

RECOVERY TANK

The recovery tank stores recovered solution. The

recovery tank should be drained and cleaned

daily.

NOTE: The water must not be hotter than 55

(130

F), or tank damage may occur.

Do not

use

steam to clean the tank.

The vacuum fan inlet screen in the vacuum fan

should be cleaned daily.

The vacuum fan housing contains two check

valves. Check the valves periodically to see that

they move freely up and down. Wipe them off with

a clean cloth.

The recovery tank has one tank float on a

standard machine, and two tank floats on a ES

machine. The tank floats should be cleaned every

50 hours of machine operation.

The tank floats can be cleaned by removing the

right recovery tank access cap, and flushing the

floats with a hose. The tank floats can also be

removed from the tank to be cleaned.

07262

07263

07279

Summary of Contents for 450

Page 1: ...450 MM289 Rev 03 11 94 Operator Manual ...

Page 2: ...easonable care The machine is maintained regularly per the maintenance instructions provided The machine is maintained with TENNANT supplied or equivalent parts Parts and supplies may be ordered by phone or mail from any TENNANT parts and service center distributor or from any of the TENNANT subsidiaries Before ordering parts or supplies be sure to have your machine model number and serial number ...

Page 3: ...ACHINE WORKS 18 PRE OPERATION CHECKLIST 19 STARTING THE MACHINE 20 FILLING THE TANKS 20 NORMAL SCRUBBING 24 DOUBLE SCRUBBING 26 STOP SCRUBBING 27 DRAINING AND CLEANING THE TANKS 28 STOP THE MACHINE 34 POST OPERATION CHECKLIST 35 OPERATION ON INCLINES 36 MACHINE TROUBLESHOOTING 37 OPTIONS 38 VACUUM WAND 38 POWER WAND 41 MACHINE TIE DOWNS 46 Page MAINTENANCE 47 MAINTENANCE CHART 47 LUBRICATION 48 RE...

Page 4: ...fety Devices Are In Place And Operate Properly Check Brakes And Steering For Proper Operation If So Equipped 3 When Using Machine Go Slow On Inclines And Slippery Surfaces Use Care When Backing Machine 4 Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 5 When Servicing Machine Avoid Moving Parts Do Not Wear Loose Jackets Shi...

Page 5: ...l becomes damaged or illegible install a new label in its place BATTERY CHARGING LABEL LOCATED ON THE RECOVERY TANK NEXT TO THE BATTERIES FLAMMABLE SPILLS LABEL LOCATED ON THE BACK PANEL OF THE MACHINE FOR SAFETY LABEL LOCATED ON THE BACK PANEL OF THE MACHINE FLAMMABLE MATERIALS LABEL LOCATED ON THE INSIDE OF THE SOLUTION TANK COVER 07221 ...

Page 6: ...ect driven BRAKING SYSTEM Parking brake option peg and cog design WHEELS AND CASTERS Front wheel 2 205 mm 8 in Rear caster 2 125 mm 5 in SYSTEM FLUID CAPACITIES Solution tank 53 L 14 gal Recovery tank 48 L 12 75 gal GENERAL MACHINE DIMENSIONS Length 1415 mm 55 75 in Width 575 mm 22 70 in Height 1080 mm 42 50 in Squeegee width 730 mm 28 8 in Scrubbing path width 510 mm 20 in Scrub brush diameter 51...

Page 7: ...SPECIFICATIONS 5 450 MM289 1 92 DIMENSIONS Top View Side View 1415 mm 55 75 in 575 mm 22 70 in 1080 mm 42 50 in 07342 ...

Page 8: ...ic or supervisor when the maintenance intervals are required as stated in the MAINTENANCE section of this manual Read this manual carefully before operating this machine FOR SAFETY Do Not Operate Machine Unless Operation Manual Is Read And Understood After the first 50 hours of operation the following procedures are recommended Check the squeegee deflection Check the electrolyte level Check the ba...

Page 9: ... A B C D F 07220 07221 A Solution Tank H Solution Tank Cover B Recovery Tank I Recovery Tank Cover C Scrub Head J Batteries D Squeegee K Solution Tank Support Arm E Control Panel L Stop Arm F Recovery Tank Drain Hose M Parking Brake G Solution Tank Drain Hose N Access Cover ...

Page 10: ...S These symbols are used to identify controls and displays on the machine Solution Flow Hourmeter ES Circuit Breaker 1 Scrub Brush Up Circuit Breaker 2 Scrub Brush Down and On Circuit Breaker 3 On off Switch Circuit Breaker 4 Fast Variable Rate Slow ...

Page 11: ... below serial number 010223 07291 A Steering Handles H On off Switch B Speed Switch I Battery Discharge Indicator C Solution Lever J Recovery Tank Drain Hose D ES Power Wand Switch K Solution Tank Drain Hose E Scrub Brush Switch L Power Kill Switch F Machine On Light M Circuit Breakers G Hourmeter ...

Page 12: ...u twist the handles the faster the machine will go Backward Twist the handles toward you Turning Push the machine in the direction of the turn with the steering handles The machine will turn on the swivel casters Stopping Release the handles NOTE To quickly stop the machine or to control the speed down a ramp twist the handles towards you 07206 07207 07209 07208 ...

Page 13: ...lows two forward speeds of the machine transport and scrub Scrub Speed For machines below serial number 010223 move the toggle switch to the left For machines serial number 010223 and above press the left of the scrub speed switch Transport Speed For machines below serial number 010223 move the toggle switch to the right For machines serial number 010223 and above press the right of the scrub spee...

Page 14: ...rward The further you move the lever forward the more you increase the solution flow to the floor Stop Move the solution lever all the way back ES POWER WAND SWITCH OPTION The ES power wand switch turns on and off the recycling system and or power wand solution system On Press the top of the ES power wand switch The green light comes on 07229 07230 07231 ...

Page 15: ...ition and rotation of the scrub brush Start and Lower Press the top of the scrub brush switch Stop and Raise Press the bottom of the scrub brush switch MACHINE ON LIGHT The machine on light comes on when the machine is powered on with the on off switch The machine on bulb goes off when the machine is powered off 07232 07233 07234 07235 ...

Page 16: ...CHARGE INDICATOR The battery discharge indicator shows the charge level of the batteries The meter s needle should be in the white zone when the batteries are fully charged As the batteries discharge the needle will move into the green zone Recharge the batteries when the needle remains in the red zone NOTE The reading on the battery discharge indicator is not accurate when the machine is first po...

Page 17: ...ON The solution tank drain hose is used to drain the solution tank on ES machines The drain hose plug is removed by flipping up the plug latch and pulling the plug out of the drain hose The drain hose is plugged by placing the hose plug in the end of the hose and flipping the plug latch down POWER KILL SWITCH OPTION The power kill switch halts all power to the machine Halt Hit the power kill switc...

Page 18: ...m is corrected The circuit breakers are located on the control panel The chart shows the circuit breakers and the electrical components they protect Circuit Breaker Rating Circuit Protected CB 1 10 A Controls CB 2 30 A Propelling motor CB 3 35 A Scrub brush motor CB 4 25 A Vacuum fan SUPPORT ARM The support arm holds up the solution tank when the tank is lifted open The support arm engages when th...

Page 19: ...Start and Lower Step on the squeegee lever Stop and Raise Pull up on the squeegee lever with the toe of your foot PARKING BRAKE OPTION The parking brake is controlled with a foot lever Set Step on the brake foot lever Release Pull up on the brake foot lever with the toe of your foot 07212 07213 07241 07244 ...

Page 20: ... As the machine is moved forward the squeegee wipes the dirty solution off the floor which is then picked up and drawn into the recovery tank The steering handles control the speed of the machine in the forward and reverse directions By twisting the steering handles forward the machine propels forward By twisting the handles towards you the machine propels backward When using the ES mode the dirty...

Page 21: ...LIST Check over this list of items before operating the machine Check under the machine for leaks Check and make sure the scrub head skirt touches the floor all the way around the scrub head Check the squeegee for proper deflection 07245 07248 07266 ...

Page 22: ... 6 93 20 STARTING THE MACHINE 1 Turn the machine power on 2 Release the machine parking brake if your machine has this option FILLING THE TANKS 1 Start the machine 2 Drive the machine to the filling site 07210 07244 07222 ...

Page 23: ...hine And Remove Key 5 Set the parking brake if your machine has this option NOTE If you are going to scrub in the ES mode the recovery tank should be partially filled before filling the solution tank Make sure the ES switch is in the top position turning the ES system on NOTE If you do not want to use the ES system press the bottom of the ES switch DO NOT fill the recovery tank 07230 07211 07241 ...

Page 24: ...r on 7 ES mode Fill the recovery tank with water until you hear the ES pump start running Stop filling the recovery tank and turn off the machine power NOTE The water must not be hotter than 55 C 130 F or tank damage may occur 8 ES mode Close the recovery tank cover 07214 07210 07246 07215 ...

Page 25: ...otter than 55 C 130 F or tank damage may occur NOTE Floor conditions water condition amount of soilage type of soilage brush action all play an important role in determining the type and concentration of detergent used For specific recommendations contact your TENNANT representative WARNING Flammable Materials Can Cause An Explosion Or Fire Do Not Use Flammable Materials In Tank s 11 Close the sol...

Page 26: ...loor or section at one time Try to scrub as straight a path as possible Avoid bumping into posts or scraping the sides of the machine When scrubbing dead end aisles start at the closed end of the aisle and scrub your way out Overlap the scrub paths by a few centimeters inches When you see poor scrubbing performance stop scrubbing and refer to MACHINE TROUBLESHOOTING 1 Turn the machine power on 2 R...

Page 27: ...9 6 93 3 Drive the machine to the area to be scrubbed NOTE Select a scrubbing speed with the speed switch 4 Lower the squeegee to the floor 5 Start the solution flow 6 Start and lower the scrub brush 07222 07212 07229 07233 ...

Page 28: ...floor accumulations This is done by making two passes over the area to be cleaned with the machine First make a pass over the area scrubbing with the squeegee up This dispenses solution over the area allowing the solution to soak on the floor Let the solution remain on the floor for 15 to 20 minutes Then make a second pass scrubbing with the squeegee down FOR SAFETY When Using Machine Go Slow On I...

Page 29: ...OPERATION 27 450 MM289 6 93 STOP SCRUBBING 1 Stop the solution flow 2 Stop and raise the scrub brush 3 Raise the squeegee 07230 07234 07213 ...

Page 30: ...dditional scrubbing If you used the machine in ES mode the solution tank should be drained and cleaned before the recovery when you are finished scrubbing 1 Stop scrubbing 2 Drive the machine next to a floor drain 3 Turn the machine power off FOR SAFETY Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 4 Set the parking brake...

Page 31: ...up then slowly lower the drain hose to the floor drain 7 ES mode Flush out the solution tank with clean water NOTE The water must not be hotter than 55 C 130 F or tank damage may occur Do not use steam to clean the tank 8 ES mode When the solution tank has completely drained replace the drain hose plug in the solution tank drain hose 07249 07250 07247 07251 ...

Page 32: ...drain hose back onto the mounting clip 10 Remove the recovery tank drain hose from the mounting clip 11 Remove the drain hose plug while holding the hose up then slowly lower the drain hose to the floor drain 12 Open the recovery tank cover 07252 07253 07256 07214 ...

Page 33: ... the ES filter Flush the filter with clean water 14 Flush out the inside of the recovery tank with clean water NOTE The water must not be hotter than 55 C 130 F or tank damage may occur Do not use steam to clean the tank 15 Spray water into the left access opening of the tank The water will drain out the right side access opening 07240 07225 07246 07226 ...

Page 34: ...cess caps making sure the cap with the drain hose goes on the right side access opening 17 Replace the drain hose plug in the recovery tank drain hose 18 Place the recovery tank drain hose back onto the mounting clip on the machine 19 Lift up the solution tank 07289 07255 07254 07257 ...

Page 35: ...the recovery tank 21 Remove the vacuum outlet screen from the vacuum fan Clean the screen and place it back in the vacuum fan 22 Place the vacuum fan back in the recovery tank 23 Pull the support arm forward and lower the solution tank 07261 07262 07260 07258 ...

Page 36: ...k to close completely STOP THE MACHINE 1 Stop scrubbing 2 Turn the machine power off 3 Set the parking brake if your machine has that option FOR SAFETY Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 07259 07211 07241 ...

Page 37: ...tor is not accurate when the machine is first powered on Operate the machine a few minutes before reading the charge level of the batteries Check over this list of items with the machine is powered off Check for wire string or twine wrapped around the scrub brush Check the squeegee for wear or damage Drain and clean the recovery tank ES machines Drain and clean the solution tank Check the vacuum h...

Page 38: ...heck the service records to determine service requirements OPERATION ON INCLINES Drive the machine slowly on inclines FOR SAFETY When Using Machine Go Slow On Inclines And Slippery Surfaces The maximum rated climb and descent angle with full tanks is 5 07245 ...

Page 39: ...losed completely Close cover Little or no solution flow to the floor Solution tank empty Fill solution tank Solution control cable broken or out of adjustment Replace and or adjust cable Solution supply lines plugged Flush solution supply lines ES mode ES switch off Turn ES switch on Poor scrubbing performance Debris caught on scrub brushes Remove debris Improper detergent or brush used Check with...

Page 40: ...lls which are out of reach of the machine 1 Turn the machine power off FOR SAFETY Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 2 Set the parking brake if your machine has this option 3 Remove the squeegee suction hose from the recovery tank 07211 07241 07267 ...

Page 41: ...89 6 93 4 Put together the wand and the wand hose 5 Push the vacuum wand hose into the recovery tank 6 Turn the machine power on 7 Lower the squeegee to turn the vacuum system on 8 Vacuum the floor 07268 07210 07212 07311 ...

Page 42: ...0 MM289 6 93 40 9 When finished raise the squeegee 10 Turn the machine power off 11 Remove the vacuum hose from the recovery tank 12 Reconnect the squeegee suction hose to the recovery tank 07213 07211 07267 07268 ...

Page 43: ...loors which are out of reach of the machine 1 Turn the machine power off FOR SAFETY Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 2 Set the parking brake if your machine has this option 3 Remove the squeegee suction hose from the recovery tank 07211 07241 07267 ...

Page 44: ...on the solution tank Push the connector in until it stops Pull on the hose to make sure it is connected 5 Push the power wand vacuum hose into the recovery tank 6 Attach the other ends of the solution and vacuum hoses to the power wand 7 Turn the machine power on 07339 07333 07320 07210 ...

Page 45: ...n 9 Switch the power wand on 10 Squeeze the solution lever on the power wand to spray solution on the floor Scrub the floor with the brush side of the cleaning tool 11 Vacuum up the solution by turning over the cleaning tool so the squeegee side is down 07212 07231 06603 06202 ...

Page 46: ...ller wheels on the tool by turning the black adjustment knob NOTE The wheels are properly adjusted when the squeegee blades deflect slightly while the tool is pushed back and forth 12 When finished switch the power wand off 13 Raise the squeegee 14 Disconnect the solution hose from the solution tank 06604 07232 07213 07340 ...

Page 47: ... power wand vacuum hose from the recovery tank 16 Disconnect the other ends of the solution and vacuum hoses from the power wand 17 Turn the machine power off 18 Reconnect the squeegee suction hose to the recovery tank 07334 07321 07211 07268 ...

Page 48: ... tied down for transport using the tie down brackets at the front and rear When transporting the machine on a trailer or in a truck be sure to set the parking brake if your machine has that option and block the machine tires to prevent the machine from rolling 07310 ...

Page 49: ...y tank ES mode Clean ES filter 1 3 Vacuum fan inlet screen Clean 1 5 Solution tank ES mode Clean 1 6 Machine Check for leaks 1 8 Scrub head skirt Check adjustment 1 Check for damage and wear 1 50 Hours 1 Recovery tank float s Clean 1 2 100 Hours 4 Rear caster Lubricate SPL 4 7 Wheel drive chain Lubricate SPL 1 2 Squeegee Check leveling 1 7 Wheel drive chain Check tension 1 400 Hours 10 Vacuum fan ...

Page 50: ... limited by the number of charges the batteries receive To get the most life from the batteries charge them when the battery discharge indicator needle remains in the red zone of the indicator Periodically clean the top surface of the batteries and the terminals and check for loose connections Use a strong solution of baking soda and water Brush the solution sparingly over the battery tops termina...

Page 51: ...ck the hydrometer readings against the following chart to determine the remaining battery charge level SPECIFIC GRAVITY BATTERY at 27 C 80 F CHARGE 1 265 100 Charged 1 223 75 Charged 1 185 50 Charged 1 148 25 Charged 1 110 Discharged NOTE If the readings are taken when the battery electrolyte is any temperature other than 27 C 80 F the reading must be temperature corrected Add or subtract to the s...

Page 52: ...ith Battery Acid 5 Unplug the machine connector from the battery connector and plug the charger connector into the battery connector WARNING Batteries Emit Hydrogen Gas Explosion Or Fire Can Result Keep Sparks And Open Flame Away Keep Covers Open When Charging 6 Plug the battery charger into the wall outlet NOTE If the red ABNORMAL CYCLE lamp lights when the optional TENNANT charger is plugged int...

Page 53: ...m forward and lower the solution tank 13 Rotate the stop arm out of the way to allow the solution tank to close completely CHAINS WHEEL DRIVE CHAIN The wheel drive chain is located between the front wheels The chain tension should be checked after every 100 hours of machine operation The correct chain tension is 3 mm 0 12 in deflection from a force of 3 5 to 4 5 kg 8 to10 lb at the midpoint of the...

Page 54: ... 2 Turn the machine power off when the scrub brush contacts the floor Set the parking brake if your machine has this option FOR SAFETY Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 3 Check to see if the scrub head skirt touches the floor all the way around the scrub head 4 If the skirt needs to be adjusted loosen the skir...

Page 55: ...e the scrub head skirt is raised just off the floor 2 Turn the machine power off and set the parking brake if your machine has this option FOR SAFETY Before Leaving Or Servicing Machine Stop On Level Surface Set Parking Brake If So Equipped Turn Off Machine And Remove Key 3 Loosen the skirt band clamp 4 Pull the old skirt out from under the skirt band 5 Insert the new skirt under the skirt band al...

Page 56: ...ng pads must be placed on pad drives before they are ready to use The cleaning pad is held in place by a pad holder Cleaning pads need to be cleaned with soap and water after every use REMOVING THE SCRUB BRUSH 1 Make sure the scrub head is raised off the floor 2 Turn the machine power off and set the parking brake if your machine has this option FOR SAFETY Before Leaving Or Servicing Machine Stop ...

Page 57: ... index finger The brush will drop off the brush drive hub 6 Pull the brush out from under the scrub head INSTALLING THE SCRUB BRUSH 1 Place the scrub brush on the floor in front of the scrub head Push the brush under the scrub head 2 Turn the scrub brush so that the brush spring clip is seen through the scrub head access 07309 07276 07277 07309 ...

Page 58: ... the other side until the brush snaps onto the brush drive hub The brush may have to be moved around to line the scrub brush up with the brush drive hub Another way is to hold the brush spring clip together and lift the scrub brush from underneath onto the brush drive hub The scrub brush may have to be moved around to line the scrub brush up with the brush drive hub 5 Check the brush to make sure ...

Page 59: ...leaned daily The vacuum fan housing contains two check valves Check the valves periodically to see that they move freely up and down Wipe them off with a clean cloth The recovery tank has one tank float on a standard machine and two tank floats on a ES machine The tank floats should be cleaned every 50 hours of machine operation The tank floats can be cleaned by removing the right recovery tank ac...

Page 60: ... squeegee blades for damage and wear daily Rotate or replace either of the squeegee blades if the leading edge is torn or worn half way through the thickness of the blade The squeegee can be adjusted for leveling and deflection The deflection of the squeegee blades should be checked daily or when scrubbing a different type of floor The leveling of the squeegee should be checked every 100 hours of ...

Page 61: ... Raise the squeegee 3 Remove the squeegee suction hose from the squeegee 4 Remove the two mounting bolts holding the squeegee to the squeegee pivot 5 Save the hardware 6 Pull the squeegee out from under the machine 07281 07284 07285 ...

Page 62: ...the mounting bolts 5 Replace the squeegee suction hose on the squeegee LEVELING THE SQUEEGEE Leveling of the squeegee assures even contact the length of the squeegee blade with the surface being scrubbed Make sure this adjustment is done on a even level floor 1 Turn the machine power on 2 Lower the squeegee 3 Drive the machine forward then turn the machine power off 4 Look at the deflection of the...

Page 63: ...ne power and move the machine forward again to check the squeegee blade deflection 9 Readjust the squeegee blade deflection if necessary ADJUSTING SQUEEGEE BLADE DEFLECTION Deflection is the amount of curl the squeegee blade has when the machine moves forward with the squeegee lowered to the floor The best deflection is when the squeegee wipes the floor just dry with a minimum amount of deflection...

Page 64: ...in to check the squeegee blade deflection Readjust the squeegee blade deflection if necessary 9 Turn the machine power off 10 Tighten the adjustment screw jam nut 11 Replace the squeegee suction hose on the squeegee 12 Raise the squeegee SQUEEGEE BLADES The squeegee has two squeegee blades Each blade has four wiping edges To use them all start with one wiping edge To use the next wiping edge rotat...

Page 65: ... off the squeegee frame 5 Replace or rotate the squeegee blade to allow a new edge to face the front of the machine 6 Slide the squeegee blade onto the squeegee frame NOTE Lubricating the squeegee frame where the squeegee blade makes contact with it will make it easier to slide the blade onto the frame 7 Place the squeegee gasket on the end of the squeegee frame with the long end down and back 8 P...

Page 66: ...ted after every 400 hours of machine operation STORAGE INFORMATION The following steps should be taken when storing the machine for extended periods of time 1 Drain and clean the solution and recovery tanks 2 Park the machine in a cool dry area 3 Remove the batteries or charge them after every three months ...

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