96
Operation
3.10 Operation Routine Maintenance
Some components of the ultra high pressure water
and vacuum systems may require maintenance
during a typical waterblasting shift. This main-
tenance is considered routine and a component
of the waterblasting process. The frequency for
maintaining the items listed in this section will
vary, depending on the quality of the clean water
supply, the overall condition of the waterblasting
systems and prociency of the operators.
A well maintained truck using water from a very
clean source being operated by an experienced
operator may only require routine maintenance
at the beginning or end of each shift. A poorly
maintained truck, poor quality clean water sup-
ply, or truck that is not being operated properly
could require routine maintenance several times
during a shift.
The following is a list of the components that
could require routine maintenance during a typical
waterblasting shift and a brief description of the
procedure. Refer to the Lubrication and General
Maintenance section of this manual for detailed
instructions for routine maintenance items listed.
The following items may require mainte-
nance during a typical shift:
• 10 Micron Filter - The lter should be replaced
at the start of each shift and may require re-
placement during the shift if low charge water
pressure is indicated. Shutdown the system,
remove the lter clamp and cap, then remove
and replace the lter. Reinstall and tighten
the cap.
• 1 Micron Filter - The lter should be replaced
at the start of each shift and may require re-
placement during the shift if low charge water
pressure is indicated. Shutdown the system,
remove the lter clamp and cap, then remove
and replace the lter. Reinstall and tighten
the cap.
• Purge Air From The Charge Water System - If
the clean water lters are replaced or the op-
erator allows the clean water tank to run dry,
air will be introduced into the charge water
system that must be purged before the system
will prime and supply clean water to the ultra
high pressure pump. Follow the procedure
outlined in the Lubrication and General Main-
tenance section.
• Blast Head Shroud Wear Brush Adjustment -
If the wear brush wears or the shroud clamp
becomes loose and the brush looses contact
with the pavement, the wear brush will need to
be adjusted. Make sure the Hog Arm is in the
down position with the castor wheels rmly on
the pavement. Loosen the clamp and adjust
the wear brush so it is making light contact
with the pavement, then tighten the clamp.
• Adjust caster wheel height - Adjustment may
be required to increase shroud distance from
the pavement to clear obstacles like road
markers or decrease clearance when no ob-
stacles are present. Remove the safety pin,
then rotate the handle on each caster to set
the height. Reinsert the safety pin to lock the
adjustment.
• Drain Vacuum Canister - The vacuum canister
must be checked frequently during operation
and drained when more than 6” of water has
accumulated in the bottom. Shutdown the
vacuum system, uncoil the drain hose and
open the canister drain ball valve. Make sure
to close the valve and coil the hose before
resuming operations.
• Clean The Vacuum Filter - The lter should
be cleaned at the start of each shift and may
require cleaning during the shift If reduced
vacuum pressure is indicated. Shutdown the
vacuum system. Open the door on the vacuum
canister, then remove and clean the lter. Re-
install the lter, then close and latch the door.
• Drain Debris Tank Water - If the debris tank
becomes full of water during a shift, it must
be drained to avoid an unexpected vacuum
system shutdown. Shutdown the vacuum
system and turn the Debris Tank Drain switch
on the console switch panel or on the debris
tank control switch panel ON to open the drain
valves. Turn the Debris Tank Drain switch OFF
when draining is complete to close the valves.
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