SECTION 6
LOW PRESSURE WATER
May 2003
6-7
05148390
Pressure Adjustment
Pressure Settings
Bar (psi)
Control #
Increase Decrease Maximum Minimum
Booster Relief Valve
(3)
Clockwise
Counter-
clockwise
8.3 (120) 8.0 (115)
LP Manif. Relief Valve
(10)
Fixed Fixed 9.0 (130) 8.6 (125)
The cutting water supply circuit is automatically shut off after the motor
has been off for 2 minutes. To reset the water supply valve, press F6.
Automatic shutoff of the cutting water supply prevents unnecessary
water spillage in the event of an external leak that triggers an automatic
shutdown on an unattended KMT Waterjet pump.
6.3 Maintenance Overview
In order to maintain necessary fluid pressure for the pump and to keep
the water clean for proper operation it is necessary to replace the water
filter and/or adjust the booster pump. The guidelines for servicing these
parts are described below.
6.3.1 Water Filter Service
Replace filter elements when there is a 1 bar (15 psi) pressure differential
between gages (4) and (6):
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 elements 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 readings.
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