Hog Technologies SK5500, Operation Manual

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Section 4 - General Maintenance
4.11 Vacuum Canister & Filter
The vacuum filter canister houses the vacuum
filter to protect the blower from debris and should
be checked at the beginning of each shift. It is
normal for water vapor to travel from the debris
tank to the vacuum filter canister and gradually
accumulate. Therefore, the canister should be
drained at the start of each shift, each time the
debris tank is drained and whenever the vacuum
filter is serviced to ensure excess water does not
collect to an unsafe level in the bottom of the
filter canister. There is a manual drain valve at
the bottom of the filter canister to remove excess
water as needed.
The filter canister contains a pleated, reusable
vacuum filter that can be easily removed through
the door on the side of the canister. The vacuum
filter should be inspected and cleaned before
each shift.
Use the following procedure to drain the can -
ister and remove and clean the vacuum filter:
1. Make sure the water blasting system is shut-
down and the truck is in the service position.
2. Open the filter access door and drain accumu -
lated water from the canister. Close the valve
when draining is complete.
3. Remove the wing nut that secures the vacuum
filter to the canister and remove the filter.
4. Use a detergent degreaser to cut the oil and
grease, then power wash the filter with pres -
sure not exceeding 2000 psi.
5. Thoroughly inspect the filter for holes and
damage. Replace the filter if its condition is
questionable, it is damaged or has holes that
could allow debris to get into the blower.
6. Install the cleaned or new filter and secure it
with the wing nut. Hand tighten the wing nut.
Make sure not to over tighten the wing
nut and collapse the filter.
7. Close and latch the filter access door.
Typical Pleated Vacuum Filter
Vacuum Canister Access Door, Filter & Drain Valve