SECTION 6
LOW PRESSURE WATER
Jan 2001
Page 6-2
05114616
6.2 Cutting Water Supply
The cutting water supply includes the following:
• Low pressure water filter
• Inlet water shutoff valve (solenoid operated)
• Boost pump along with sensors and pressure controls
The low pressure water fittings are stainless steel with rubber hoses connecting
the low pressure water components. The boost pump housing is also stainless
steel and is protected by the low pressure water filter.
The low pressure cutting water circuit allows the water to pass through the low
pressure filter prior to entering the boost pump to prevent debris from
damaging the pump.
However, when the low pressure water filter gets loaded up with
dirt/contaminants, the water pressure exiting this filter may be too low to
supply the boost pump. The low pressure water filter is equipped with pressure
gages to indicate the condition of the filter element.
Quick disconnects are provided at all of the HP cylinder inlet check
valve/sealing head ports for ease of maintenance, preventing low pressure
water from spraying out when this connection is broken. 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.
6.2.1 Normal Operating Condition
During normal operation, the low pressure water system maintains the
following conditions:
• Filter pressure drop (gage reading 4 minus 6) not more than
1 bar (15 psi)
• Boost pump discharge pressure gage reading 8.0-8.3 bar (115-120 psi)
NOTE
While the intensifier assembly reverses direction, the boost pressure will
fluctuate slightly above and below the normal setting. Pressure fluctuation
greater than 2 bar (30 psi) may indicate inadequate water supply to unit, or
poor boost pump performance.
To Next Page
Loading...
Need help?
General
