Parts List Rev Date 11-04 Rev.

• Convertamatic 26d-c Parts Manual

. page 18. page 19. page 42. Convertamatic 24D, 26D, 28D ™ Convertamatic 24C, 26C, 28C ™ Service Manual Advance Models 56315000(24D-C), 56315001(26D), 56315002(28D), 56315003(24C-C), 56315004(28D-C), 56315005(28C-C), 56315006(X24D-C), 56315007(X24C-C), 56315008(26D-C), 56315009(X26D-C), 56315010(26C-C), 56315011(X26C-C), 56315012(X28D-C), 56315013(X28C-C) 2/05 revised 8/06 FORM NO. TABLE OF CONTENTS INTRODUCTION.2 CAUTIONS AND WARNINGS.3 SPECIFICATIONS & MAINTENANCE.4-6 PM CHECKLIST.7 KNOW YOUR MACHINE.8-12 SOLUTION SYSTEM. 13-19 FUNCTIONAL OVERVIEW.13 CIRCUIT OVERVIEW SOLUTION AUTO MODE.

14 SOLUTION SYSTEM MAINTENANCE. INTRODUCTION This manual will help you get the most from your Convertamatic. Read it thoroughly before servicing the machine. Note: Bold numbers and letters in parentheses indicate an item illustrated on pages 8-10. PARTS AND SERVICE Repairs, when required, should be performed by your Authorized Nilfi sk-Advance Service Center, who employs factory trained service personnel, and maintains an inventory of Nilfi. CAUTIONS AND WARNINGS SYMBOLS Nilfi sk-Advance uses the symbols below to signal potentially dangerous conditions. Read this information carefully and take the necessary steps to protect personnel and property.

11/04 revised 1/07 FORM NO. 56042451 BOOK E SECTION 18.3.1 Convertamatic™ 24, 26, 28, 32 BA 625, 725, 825 Parts List Advance Models: 56315000(24D-C), 56315001(26D.

Is used to warn of immediate hazards that will cause severe personal injury or death. Is used to call attention to a situation that could cause severe personal injury. TECHNICAL SPECIFICATIONS 4 - FORM NO. 56043098 - Convertamatic 24C, 24D, 26C, 26D, 28C, 28D ™.

SPECIFICATIONS FORM NO. 56043098 - Convertamatic 24C, 24D, 26C, 26D, 28C, 28D - 5 ™. MAINTENANCE SCHEDULE Maintenance intervals given are for average operating conditions. Machines used in severe operational environments may require service more often. MAINTENANCE ITEM Daily Weekly Monthly Yearly Charge Batteries Check/Clean Tanks & Hoses (clean recovery tank switches & vacuum inlet screen) Check/Clean/Rotate the Brushes/Pads Check/Clean the Squeegee Clean Hopper on Cylindrical System. L5r 4th edition character creation. Advance Convertamatic 24/26/28 C/D Models ™ Cylindrical and Disc PM Checklist Defect Codes Customer needs adjustment binding Address dirty or contaminated damaged, bent or torn City leaks missing Model Serial Hours worn out Does OPERATIONAL INSPECTION ITEMS Defect Codes (circle) Work Drive Paddle Operation (check for Fwd/Rev Drive &. KNOW YOUR MACHINE As you read this manual, you will occasionally run across a bold number or letter in parentheses - example: (2).

These numbers refer to an item shown on this page unless otherwise noted. Refer back to this page whenever necessary, to pinpoint the location of an item mentioned in the text.

NOTE: Refer to the service manual for detailed explanations of each item illustrated on the next 3 pages. KNOW YOUR MACHINE Solution Drain Hose / Level Indicator Battery Pack Connector (non onboard charger models only) Squeegee Raise / Lower Lever 25a Battery Pack Connector (onboard charger models only) Onboard Battery Charger (Not found on all models) Squeegee Blade Tension Strap Wheel Drive Circuit Breaker Squeegee Blade Alignment Pins Control Circuit Circuit Breaker. KNOW YOUR MACHINE Key Switch (Main Power) Solution Switch Vacuum Switch Display Panel Solution Flow Indicator AXP Indicator Hour Meter Battery Indicator Scrub Pressure Indicator Recovery Tank FULL Indicator Fault Indicator Wand Switch (Dealer Installed Option) Detergent System (AXP models only) Extended Scrub System (Dealer Installed Option) Scrub OFF Scrub ON.

KNOW YOUR MACHINE FUNCTIONAL DESCRIPTION OF CONTROL PANEL: The controls on the Convertamatic were designed with one touch operation in mind. For single pass scrubbing the user can simply depress one switch and all systems on the machine will be ready to go.

For most single-pass scrubbing operations, the operator should only need to use the middle switches on the control panel. KNOW YOUR MACHINE DESCRIPTION OF INDICATORS ON THE CONTROL PANEL: In general, the following guidelines apply to the control panel indicators: A fl ashing green or yellow indicator means that a fault has occurred in the particular system. An example of this would be an over-current fault. A yellow indicator means that the particular function has been enabled but is not currently on. SOLUTION SYSTEM FUNCTIONAL OVERVIEW See Figure 1. The Convertamatic models have a solution tank fi ll capacity of 20-gallons (76 liters).

All models use one right rear tank fi ll opening, which offers ease of fi lling. Plumbed into the manual solution shut off valve outlet is a serviceable Solution Filter (C), to keep debris from entering the solenoid valve. Also fi tted to the tank is a fl. SOLUTION SYSTEM CIRCUIT OVERVIEW SOLUTION AUTO MODE (SOLENOID VALVE CIRCUIT) See Figure 2. + (Positive) circuit input starts with:.

A closed S3 key switch will direct the needed positive voltage (BRN wires) to the L1 solenoid coil and A1 control board terminal #J1-13. (Negative) circuit input starts with:. SOLUTION SYSTEM SOLUTION SYSTEM MAINTENANCE. Solution Tank: See Figure 1.

Weekly empty the solution tank; remove the solution Drain Hose (B) from its storage area (located on the right rear control handle compartment). Direct the hose to a designated “Disposal Site” and fl ush the tank with clean water.

SOLUTION SYSTEM TROUBLESHOOTING GUIDE ELECTRICAL Possible Symptoms 1-No solution fl ow while in the scrub auto solution mode. 2-Solution Pump will not operate: SYMPTOM ONE Note: Activate the Service Test Mode Program. See optional program section for instructions.

All testing will be performed in the Service Test Mode Program. 16 - FORM NO.

SOLUTION SYSTEM TROUBLESHOOTING GUIDE ELECTRICAL (CONTINUED) SYMPTOM TWO Note: Activate the Service Test Mode Program. See optional program section for instructions. All testing will be performed in the Service Test Mode Program. 56043098 - Convertamatic 24C, 24D, 26C, 26D, 28C, 28D - 17 ™. SOLUTION SYSTEM SOLENOID VALVE REMOVAL Drain the solution tank or turn the solution fi lter ball valve to the off position to prevent solution loss. Lower the deck and disconnect the battery supply to the machine.

Remove the front Nose Cone from the machine by fi rmly grasping the lower part and lifting straight up. See Figure 3. SOLUTION SYSTEM SOLUTION FILTER AND BALL VALVE REMOVAL Drain the solution tank using the solution drain hose (B). See Figure 4. Loosen the (2) Hose Clamps (K) and pry off the inlet Solution Hose (L) and Solution Hose (M).

Remove the Nut (N) that secures the Filter Mount Bracket (O) to the chassis and remove the assembly from the machine. FIGURE 4 SOLUTION PUMP REMOVAL Drain the solution tank or turn the solution fi.

SCRUB SYSTEM FUNCTIONAL OVERVIEW. Disc Brush System Overview See Figure 2. The machine models Convertamatic™ 24D, 26D, 28D use the disc type scrub system powered by (2) 1/2 hp motor gearbox assemblies.

Cylindrical Brush System Overview See Figure 4. The machine models Convertamatic™ 24C, 26C, 28C use two cylindrical brushes that counter rotate to sweep up light debris and scrub at the same time. SCRUB SYSTEM. Scrub Brush Removal Function (Continued / Disc only). Control and Load circuit detail. A closed S3 key switch supplies the needed positive voltage to the K1 brush solenoid coil, A1 control board (J1-13) Brn wire and K3 brush remove coil relay (Part of A1 Control Board). SCRUB SYSTEM SCRUB BRUSH DECK REMOVAL (DISC) With scrub brushes installed lower the scrub deck, turn the key off and disconnect the battery pack.

Remove the front Nose Cone by fi rmly grasping the lower part and lifting straight up. Disconnect the Solution Hose from the scrub deck. SCRUB SYSTEM SCRUB BRUSH MOTOR/GEARBOX REMOVAL (DISC) Follow the steps in the Scrub Brush Deck Removal (Disc) section.

Turn the brush deck on its back. Remove the scrub brushes from the brush holders. If removing both motor/gearboxes mark the location of the holders and motors to the brush deck for proper re-assembly. SCRUB SYSTEM SCRUB BRUSH DECK REMOVAL (CYLINDRICAL) With scrub brushes installed lower the scrub deck, turn the key off and disconnect the battery pack.

Convertamatic 26d-c Parts Manual

Remove the front nose cone by fi rmly grasping the lower part and lifting straight up. See Figure 4. SCRUB SYSTEM FIGURE 4 FORM NO. 56043098 - Convertamatic 24C, 24D, 26C, 26D, 28C, 28D - 25 ™.

RECOVERY SYSTEM FUNCTIONAL OVERVIEW Vacuum / Recovery System General Dirt and water are lifted off the fl oor into the recovery tank by airfl ow, created by a 3-Stage 24V vacuum motor. The wastewater and air enter the vacuum system at the squeegee tool, through small openings (notches) located in the front squeegee blade. RECOVERY SYSTEM VACUUM MOTOR CONTROL CIRCUIT OVERVIEW (AUTO MODE) See Figure 2. + (Positive) Circuit input starts with:.

A closed S3 key switch supplies the needed positive voltage to the K2 vacuum solenoid coil and the A1 control board J1-13 (Brn wire). Note: The A1 control board scrub-on button must also be depressed (enabled). RECOVERY SYSTEM VACUUM / RECOVERY SYSTEM SERVICE MAINTENANCE CHECKLIST Whenever there is a vacuum problem, it’s best to check over the entire system.

Use the checklist below as a guide, to thoroughly check the vacuum system. □ Inspect and clean the vacuum motor fl oat switch.

(If the switch is open tipped up the vacuum motor will not operate) □. RECOVERY SYSTEM MAINTENANCE OF RECOVERY TANK FLOAT SWITCHES If the recovery tank fl oat switch(es) become dirty it can impair their proper operation. A dirty vacuum shut off switch can cause the vacuum motor to not function at all or to not shut off when the tank is full. Dirty extended scrub system switches can prevent the optional extended scrub system from functioning properly. If daily rinsing of the recovery tank does not suffi. RECOVERY SYSTEM MAINTENANCE OF VACUUM MOTOR INLET SCREEN The Vacuum Motor Inlet Screen (4) should be cleaned on a daily basis.

DO NOT run water down the screen in an attempt to clean it. If you do this you will be running water directly into the vacuum motor.

RECOVERY SYSTEM VACUUM MOTOR REMOVAL Drain the recovery tank using the drain hose. Turn the key off and disconnect the battery pack Swing open the recovery tank and disconnect the vacuum motor harness connector. See Figure 5.

Remove the vacuum motor Shroud Cover (A) secured to the bottom of the recovery tank (qty 4 screws). Loosen the exhaust hose clamp and remove Hose (B) from the vacuum motor discharge tube and completely remove the Vacuum Motor (C) from its mount cavity. RECOVERY SYSTEM RECOVERY TANK REMOVAL Follow steps 1-5 in the Vacuum Motor Removal section. Disconnect Recovery Tank fl oat switch(es). NOTE: Disconnect any other options installed on the tank.

See Figure 6. Remove the Screw (F) and Tank Cable (G) and allow the tank to swing down to the side of the battery compartment box. Remove the Recovery Tank Drain Hose (H). SQUEEGEE SYSTEM SQUEEGEE LIFT LINKAGE ADJUSTMENT See “Know Your Machine”. The squeegee pick-up tool is raised and lowered manually by a rear control panel mounted Lever (15).

Squeegee Lift Lever Adjustment The squeegee tool’s storage and operating positions are adjustable. To adjust: Lower the squeegee assembly to the fl. SQUEEGEE SYSTEM SERVICING THE SQUEEGEE If the squeegee leaves narrow streaks or water, the blades may be dirty or damaged. Remove the squeegee, rinse it under warm water and inspect the blades.

Reverse or replace the blades if they are cut, torn, wavy or worn. To Reverse or Replace the Rear Squeegee Wiping Blade. SQUEEGEE SYSTEM SQUEEGEE MOUNT ASSEMBLY REMOVAL See Figure 3. Disconnect Squeegee Hose (28) and remove the Squeegee Assembly (12) from the machine. Lower the Squeegee Lever (15) and disconnect the Squeegee Lift Cable (C) from the squeegee mount bracket. Refer to Caster Wheel Removal section to remove the rear Caster (D). Remove Screw (E) and slide the Squeegee Mount Assembly (F) away from the chassis.

SQUEEGEE SYSTEM CASTER WHEEL REMOVAL WARNING! Disconnect the battery pack connector before servicing machine.

Never work under machine without safety stands or blocking to support the machine. Drain both the solution and recovery tanks. Remove the squeegee assembly and have the scrub deck in the up (stored) position with the scrub brushes installed. WHEEL DRIVE SYSTEM GENERAL FUNCTIONAL OVERVIEW See Figures 1 and 2. A 300 watt (.4 HP) permanent magnet (24V) motor transaxle (M1) is used for the wheel drive on all machines. A Curtis PMC solid state speed controller (A2) regulates the variable speed and Fwd/Rev wheel drive motor functions. Location of the controller is in the rear handle housing electrical compartment (accessible by removing the 4 screws securing the rear electrical panel).

WHEEL DRIVE SYSTEM FIGURE 2 FUSE,150A. BATTERY Partial A1 Control Board CIRCUITBREAKER,5AMP SW,SPSTKEY WHT/YEL CIRCUITBREAKER,30AMP B+ B- 1210SPEEDCONTROLLER POT.5KOHM (1228FOR36V) ORN/BLU THROTTLE PIN9-STATUS RED/BLK PIN6-BRAKE(-) BLU/BLK PIN16-REV BRN/BLK PIN5-KSI PIN13-POT.LO PIN4-POT.WIPER PIN3-POT.HI YEL/RED PIN18-SPEEDLIMITPOT MOTOR,WHEELDRIVE POT.100KOHMSPEEDLIMIT Electrical Diagram.For complete description of all callouts see Electrical System Wiring Diagram. 38 - FORM NO. WHEEL DRIVE SYSTEM R2 Voltage Values R1 Voltage Values FIGURE 3 0V = Minimum Speed 0 – 2.5V Forward 5V = Maximum Speed 2.5V – 5V Reverse WHEEL DRIVE SYSTEM R1 Throttle 5K Ohms A1 Speed Control Pin Connection POT HIGH STATUS BRAKE R2 Speed Limit.

WHEEL DRIVE SYSTEM WHEEL DRIVE TROUBLESHOOTING GUIDE Problem Possible Cause. Wheel Drive Motor Circuit Breaker (F32) tripped (reset 30A circuit breaker). Wheel drive motor will not run in forward and reverse. Control Circuit Circuit Breaker (F2) tripped (reset circuit breaker).

WHEEL DRIVE SYSTEM DRIVE MOTOR TRANSAXLE REMOVAL WARNING! Disconnect the battery pack before servicing machine. Never work under machine without safety stands or blocking to support the machine. Drain both the solution and recovery tanks and remove the squeegee. Remove the Scrub deck by following the Scrub Deck Removal instructions in this manual. WHEEL DRIVE SYSTEM DRIVE MOTOR TRANSAXLE REMOVAL CONTINUED See Figure 5. Jack the front of the machine from this location until the drive wheels are approximately 1” off the ground.

Remove the (8) Locknuts (A) and then remove the (2) Drive Wheels (B) from the transaxle. Disconnect the drive motor wiring connector. WHEEL DRIVE SYSTEM DRIVE WHEEL REMOVAL WARNING!

Disconnect the battery pack connector before servicing machine. Never work under machine without safety stands or blocking to support the machine.

Remove the squeegee and place wood blocking in front and rear of the opposite drive wheel that you are removing to prevent the machine from rolling. Using a scissors jack, raise the machine until the wheel is off the ground. WHEEL DRIVE SYSTEM (5K) POTENTIOMETER (R1) TESTING AND REMOVAL WARNING! Disconnect batteries at the battery pack disconnect before servicing.

Testing the 5KDirectional/Throttle Potentiometer R1 Note: The potentiometer (pot) doesn’t have to be removed from its housing mount to test. See Figure 7. Remove the front Drive Paddle Cover (G) from the Rear Housing (H) held together with (4) (I) Screws. Note the cover will have the speed limiting Pot (R2) mounted to it, observe the (3) wires and separate them to complete the removal of the cover.

WHEEL DRIVE SYSTEM (5K) POTENTIOMETER (R1) INSTALLATION AND ADJUSTMENT (CONTINUED) Reconnect the ohmmeter test leads to the pot wiper and low terminal connections and adjust (turn the pot) to obtain half of pot’s total resistance. This will accurately set the true neutral drive paddle operator position. Tighten the anchor nut secure. ELECTRICAL SYSTEM BATTERIES If your machine shipped with batteries installed do the following:. Check that the batteries are connected to the machine (25 / 25a).

Turn ON the Key Switch (A) and check the Battery Indicator (D). If the gauge is completely fi lled, the batteries are ready for use. ELECTRICAL SYSTEM SPECIFIC WET CELL BATTERY INFORMATION Wet Cell Battery specifi cations - Use a combination of multiple 2-volt cell units to construct a 24 Volt DC battery pack system. Nilfi sk-Advance recommended battery pack capacity is a 238 AH @ 20 Hour Rate deep cycle battery system. Note: The battery pack must fi t the battery compartment size listed in Specifi. ELECTRICAL SYSTEM CHARGING WET BATTERIES Charge the batteries each time the machine is used or when the Battery Indicator (D) is reading less than full. Do not fi ll the batteries before charging.

Charge batteries in a well ventilated area. Do not smoke while servicing the batteries. ELECTRICAL SYSTEM BATTERY MAINTENANCE WET CELL BATTERIES Proper maintenance of electric vehicle batteries can greatly extend their life. Well-maintained batteries may last up to 3 years, but failure after 1 year is common if maintenance has been poor. There are 3 simple rules for good battery maintenance:. ELECTRICAL SYSTEM ACTUATOR DRIVE NUT ADJUSTMENT This manual section explains the steps for adjusting the drive nut (spring housing) setting for all the models’ scrub brush lift actuator motor. Reference the chart below to fi nd the IN & OUT dimensional specifi cation for an actuator motor needing adjustment.

Part # Actuator Motor Spring Housing IN Position. FIGURE 4 FORM NO. 56043098 - Convertamatic 24C, 24D, 26C, 26D, 28C, 28D - 51 ™.

ELECTRICAL SYSTEM CURTIS CONTROLLER DIAGNOSTICS: Diagnostics Method A: Uses the machine’s control display LED panel and wand switch indicator. FUNCTION OF THE SPEED CONTROLLER STATUS LIGHT AND DISPLAY The Curtis 1210- (24V) speed control will output a fault code if there is a problem associated with the speed control and wheel drive system. See Figure 5. If a speed control fault occurs, the display LED panel (D) will indicate 03.

ELECTRICAL SYSTEM FIGURE 5 FORM NO. 56043098 - Convertamatic 24C, 24D, 26C, 26D, 28C, 28D - 53 ™. ELECTRICAL SYSTEM STATUS LED FAULT CODES (TABLE 1) STATUS LIGHT EXPLANATION POSSIBLE CAUSE CODE DISPLAY over-/under-temperature cutback 1. Temperature 92°C.