Maintenance l 8
Primary Filter Cleaning Instructions
Filter cleaning procedure for primary filter:
1Take care not to lose any fasteners.
2With the pump turned off, unscrew the black
hand knob on the filter housing and slide the fil-
ter cover away from the filter housing.
3Remove the wing nut and cartridge filter from
the threaded rod mounting and clean thoroughly
with a vacuum cleaner, applied to the outside of the
filter. If using compressed air to clean, be sure to
wear eye protection and blow from the inside of the
cartridge out. The filter cannot be washed.
Inspect the filter for tears, leaks, blinded filter
media, and a bent or distorted filter base. Do not
attempt to patch or repair a damaged filter, but
replace it with a new filter cartridge.
4Replace the filter after cleaning and assure that a firm and continuous seal is
made around the base of the filter while tightening the securing nut accordingly.
Do not crush the filter by over-tightening.
5Replace the filter cover and tighten the black hand knob.
Idle Mode Valve Filter Cleaning
Instructions
Filter cleaning procedure for idle mode valve filter:
1The filter may be cleaned thoroughly with a vacuum cleaner, applied to the
outside of the filter, without removing the filter.
If using compressed air to clean the filter it must be removed from the assembly.
1The filter is secured to its base by a hose clamp. Loosen the hose clamp enough
to slide the filter off the base.
2Be sure to wear eye protection and blow from the inside of the cartridge out.
3The filter cannot be washed.
4Inspect the filter for tears, leaks, blinded filter media, and a damaged filter
base. Do not attempt to patch or repair a damaged filter, but replace it with
a new filter cartridge.
5Reinstall the filter after cleaning and assure that a firm and continuous seal is
made around the base of the filter while tightening the hose clamp.
NOTE: Excessive dust here will
mean additional attention to
cleaning the pump housing is
probably required.
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