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7. Reset main circuit breaker button. BRUSH BELT MAINTENANCE Brush belt can wear prematurely if belt tension is not correct. If belt flexes more than 12.7 mm (0.50 in) from center, belt should be tightened. FOR SAFETY: Before leaving or servicing machine, stop on level surface, turn off machine and pull out main circuit breaker button. To Tighten Or Replace Brush Belt: 1. Pull out main circuit breaker button to shut off power to machine (Figure 29). 2. Remove belt guard, two screws (Figure 31). (4) Motor Mount Bolts FIG. 31 3. Remove any debris in pulley assembly. 4. Inspect belt for wear and for proper tension. FIG. 29 (Home) Home (Find...) Find... (Go To..) Go To.. (Prev.) Prev. (Next) Next Concorde HP Plus (01–00) OPERATION 5. To tighten or replace belt, loosen 4 brush motor mount bolts. If worn, replace belt (Figure 31). 6. To tighten belt, pull back on motor until belt becomes tight, retighten mounting bolts. 7. Replace brush guard and reset main circuit breaker button. PLUMBING SYSTEM MAINTENANCE FOR SAFETY: Before leaving or servicing machine, stop on level surface and turn off machine. Each month or every 80 hours of operation flush out plumbing system with an acetic acid solution. This will prevent plumbing system from clogging and reduce the risk of pump failure. Also check plumbing system for any leaks; repair if necessary. Solution pump does not require lubrication. 1. Pour 750ml (24 oz) of acetic acid solution with 11.3 L (3 gal) of hot water, 60° C (140° F), into solution tank. FOR SAFETY: When using machine, follow mixing and handling instructions on chemical containers. 2. Transport machine over a floor drain. 3. Pull out drive motor circuit breaker button to shut off power to drive motor. 4. Activate main power and pump switches. 5. Press drive switch towards clean mode symbol. 6. Rotate control grips completely forward and hold for 2 to 3 minutes. 7. Turn main power off and let machine sit overnight to allow acetic acid to break down alkaline buildup. 8. Next day, over a floor drain, disperse remaining solution. 9. Fill solution tank with 11.3 L (3 gal) of clean water and operate machine to flush out excess acetic acid solution. 10. Reset drive motor breaker button. SOLUTION FILTER MAINTENANCE Remove the following solution filters and clean them as needed. Replace filters if damaged. INLINE STRAINER FILTER 1. Pump solution tank dry to prevent water from spilling when removing filter. 2. Unscrew and remove inline strainer filter (clear bowl). Filter is located underneath at rear of machine (Figure 32). FIG. 32 3. Remove screens from bowl and clean. 4. When replacing filter, be certain clear bowl is threaded securely. SOLUTION TANK STRAINER 1. Remove solution tank fill port strainer from inside fill port (Figure 33). FIG. 33 2. Rinse filter and remove any debris. STANDPIPE SCREEN 1. Remove recovery tank dome. 2. Remove screen from standpipe and rinse off, replace screen securely. (Figure 34). FIG. 34 (Home) Home (Find...) Find... (Go To..) Go To.. (Prev.) Prev. (Next) Next Concorde HP Plus (01–00) OPERATION SPRAY BAR AND SPRAY TIP MAINTENANCE The spray bar can easily be removed and replaced with a spare spray bar when spray tips require maintenance. TO REPLACE SPRAY BAR: 1. Turn main power switch off. 2. From operator’s right side of machine, locate spray bar under machine. 3. To remove spray bar, shift spray bar to operator’s left side of machine and pull down (Figure 35). TRANSPORTING MACHINE When transporting machine by use of trailer or truck, be certain to follow tie–down procedures below: FOR SAFETY: When using machine, go slow on inclines and slippery surfaces. 1. Raise brush. 2. Load machine using a recommended loading ramp. 3. Position front of machine up against front of trailer or truck. Once machine is positioned, lower brush. 4. Place a block behind the drive wheel and the rear casters. 5. Place tie–down straps over top of machine and secure straps to floor. It may be necessary to install tie–down brackets to the floor of your trailer or truck. STORING MACHINE FIG. 35 4. Disconnect coupler at spray bar top. 5. Install spare spray bar, be certain to position spray bar “FRONT” label facing forward. TO CLEAN SPRAY TIPS: 1. Remove clogged spray tips from spray bar. Take note of spray tip position before removing. 2. Pour 4 oz. of acetic acid into a small container. 3. Completely submerge spray tips and let soak for up to six hours. Agitate spray tips occasionally. 4. After soaking spray tips, use small brush to remove excess alkaline and rinse thoroughly. ATTENTION: DO NOT use pointed objects such as pins and paper clips to unplug spray tips. This will damage spray tips, causing improper spray pattern and water flow through tips. 5. Replace spray tips in spray bar and keep on hand for spare. NOTE:If spray tips are damaged, replace spray tips. Be certain to use same spray tip size and type. Improper spray tips will affect cleaning performance. 1. Before storing machine, be certain to...

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