Hog Technologies HT1000SR, Руководство по эксплуатации, Страница: 52 / 90

52
Section 4 - Maintenance
Typical Vacuum Hose
Ground Hog Vacuum Hose Connection & Seal
4.9 Vacuum Hose Replacement
& Rotation Procedure
Debris buildup, kinks, clogs or leaks in the system
will cause a reduction in airflow at the blasting head,
reducing the efficiency of operation or causing opera -
tions to stop completely. Debris buildup inside the
hoses can be removed by periodically tapping the
outside walls with a dead blow hammer while the
system is operating at maximum vacuum. This will
flex the hose walls and cause built up debris to break
off and be sucked into the debris tank.
The internal walls of vacuum hoses develop wear
points caused from the high velocity of abrasive de-
bris traveling inside the hoses. The wear points are
most prevalent in the outside radius of tight bends
near the blasting head and where the debris hose
rises to the power unit.
The life of the hoses in these areas can be extended
by rotating the hoses 120
0
every 50 hours. Vacuum
hoses should be inspected daily and replaced as
needed.
Make sure the water blasting system is shutdown
with the power unit in the service position before
rotating or replacing vacuum hoses.
NOTICE:
dAMAGEd vACuuM HOSES CAN BE REPAIREd uSING duCT
TAPE AS A TEMPORARY SOLuTION TO EXTENd THE LIFE OF
THE vACuuM HOSE.
Vacuum Hose Replacement
1. Make sure the water blasting system is shutdown
with the power system in the service position.
1. Release the cam locks at the hose connection
fittings.
2. Remove the old vacuum hose assembly.
3.
If the cam lock fittings are in good condition and
can be reused, cut the old hose off of the fittings.
Then install the fittings in the new vacuum hose.
4. Make sure the seal is in good condition and
seated in the fitting. Connect the new vacuum
hose assembly and close the cam locks.
Vacuum Hose Rotation
1. Make sure the water blasting system is shutdown
with the power system in the service position.
1. Mark the position of the hose, then release the
cam locks at the hose fittings.
2. Using the marks as a reference, rotate the hose
120 degrees.
3. Secure the hose in the new position with the
cam locks.