Maintenance Instructions
- Precautions
- Lubricating the Cutter
- Adjusting and Replacing the Reel's Paddles
- Adjusting the Capstan Cable Tension
- Replacing the Voltage Transformer's Brushes
- Disconnect the electrical power to the top pruner before conducting routine maintenance or repairs.
- Always use two people to remove the cutter/reel assembly from the rail system.
The industrial hedge trimmer requires a little light oil to keep the blades running smoothly. Use a solvent, such as kerosene, to remove pitch that builds up on the blades.
The shaft bearings are sealed. They need no lubrication.
Adjusting and Replacing the Reel's Paddles
The paddle reel accepts two, three, or four rows of paddles. The bolts (figure 19) holding the shaft hubs in the center of the circular disks must be removed and the reels spread apart to allow individual paddle mounts to be removed or another mount to be added. The paddles can be changed without removing the paddle mounting shafts.
Figure 19—Three bolts must be removed to change the reel paddles.
Adjusting the Capstan Cable Tension
Adjust the tension on the capstan cable by tightening or loosening the turnbuckle attached to the cutter/reel assembly. Do not continue tightening the cable once the slack has been taken out. Do not overtighten the cable.
Replacing the Voltage Transformer's Brushes
The only servicing required on the voltage transformer is periodic inspection of the brushes. Replace the brushes when they have less than 0.06 inch of service length remaining. To replace brushes, disconnect the electrical power, remove the old brush assembly, and insert the replacement. With the power off, insert a piece of fine garnet paper (nonmetallic 400 grit) between the brushes and brush track, rough side toward the brushes. Three or four swings of the brushes over the garnet paper will mate the brushes' contact face to the brush track. Remove the garnet paper and blow away loose garnet particles before applying power. (The replacement brush assemblies for the 1020B series for the top pruner are Part No. 808-0129-S available from Staco energy products.)
On newly installed brushes, when the voltage adjustment knob is at zero and the rotor is against its stop, the end of the brush should cover the first bar on the commutating surface. To adjust a brush, loosen the brush holder screw and press the holder to the side. Purchase replacement fuses from a local electronics distributor.
