D4OPTRS 14 2019
SERVICE & MAINTENANCE
REMEMBER: “A CLEAN MACHINE RESULTS IN LONGER LIFE AND MAXIMUM
PERFORMANCE.”
After sweeping route is completed, the fi rst procedure in maintaining the unit must be to clean
and wash unit thoroughly. Raise the hopper/door to access internal parts of the hopper. Wash
all built-up mud from the dirt defl ector scroll and surrounding areas. Make sure to clean mud
and debris from between the defl ector scroll and the hopper door.
Wash all debris from the screen and surrounding area. Raise the hopper to full height and
wash out all remaining debris. Visually inspect all openings and seals for debris. Make sure
that the skimmer hood swings freely when hopper is raised. Check hinge pin and dump
cylinder pins for proper security. Wash any mud and debris in suction transition and suction
hose.
When hopper washing has been completed, lower hopper until suction transition is almost
touching its seal and leave in this position while sweeper is not in use to allow the seals to
conform to their original shape. This will extend the wear life of the seals. Visually inspect the
screen to insure snug fi t against hopper front panel.
IMPORTANT: It is not necessary to daily wash out the fi lter dust hopper. Just
remove the loose dust on the hopper fl oor. Washing the fi lter
hopper requires removing the four large fi lters from the hopper
to prevent mudding them over by wash water over spray. Remove
and wash the fi lters only when they cannot be purged clean down
to 3-5” WC by the dustless purge system.
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