SECTION 6
LOW PRESSURE WATER
Feb 2001
p. 6-3
05132535
The water filter assembly includes a small bleed valve that is useful in
performing maintenance on the filter. Prior to removing the filter bowl
the bleed valve provides a convenient means of releasing any pressure
trapped inside the filter. After a filter element has been replaced, this
bleed valve provides a means of purging air from the water that could be
detrimental to HP seal performance.
6.2.4 Low Pressure System Protection
6.3 Maintenance Overview
In order to maintain necessary fluid pressure for the intensifier and to
keep the water clean for proper operation periodic maintenance on the
water filter is necessary. The guidelines for servicing these parts are
described below.
6.3.1 Water Filter Service
Replace filter element when cutting water pressure gage reads less than
2 bar (30 psig):
Components: Bleed Valve
Element
Head
Housing
Recommended Tools: Supplied filter thread/unthread tool
(to turn housing)
Container (to capture some water spill)
Rags
Parts: Elements for water: 10 micron (quantity 2)
Polymer mixture: 40 micron (quantity 2)
Water Filter Element Replacement Procedure
1. Turn off cutting water supply
2. Press bleed valve to relieve trapped pressure
3. Unscrew housing from head. Remove element.
4. Install new element in housing. Screw housing into head.
5. Open cutting water supply.
6. Press bleed valve to remove trapped air.
7. Start waterjet pump. Verify satisfactory pressure reading.
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