SECTION 3
OPERATION
July 2003
p 3-11
05132519
Note that the difference between HP water pressure with the nozzle(s) open
and closed should be less than approximately 200 bar (2,900 psi). If the
pressure difference exceeds 200 bar, then look for excessive line loss or
possible blockage, such as a clogged HP water filter element.
3.4 Shutdown Procedure
NOTE
Relieve high pressure anytime the unit is stopped, by opening the
nozzle control/cutting valve.
3.4.1 Normal Shutdown Procedure
Press the STOP button. The hydraulic power unit will shut down but control
power (24vdc) will remain on.
3.4.2 Emergency Shutdown Procedure
An emergency stop is handled by pressing the EMERGENCY (E-STOP)
palmbutton. This immediately shuts off all electrical power and vents the high
pressure through the dump valve, out to drain.
3.4.3 Remote E-Stop Provisions
An emergency stop can be performed at a remote work station through wiring
connections provided on the pump starter/control panel. This control option is
useful when the operator is controlling the motion of a machine (robot, cutting
box, X-Y motion table, etc.) without leaving the work station.
3.5 Fault Messages Overview
The pump will shutdown as a result of the following conditions.
3.5.1 High Oil Temperature Shutdown
1. ABNORMAL CONDITION red light will illuminate indicating that either: 1)
the oil has overheated and the pump will shutdown due to high oil
temperature, or 2) low oil level in the hydraulic reservoir (pump will shut
down).
2. To correct the condition find the reason for the overheat.
3. After temperature returns to normal the illuminated red malfunction light
will go out. The pump is ready to be restarted.
4. Restart the SL-IV Pump. Note that if the fed light is illluminated, the pump
will not start.
3.5.2 Low Oil Level Shutdown
1. The unit will shut down immediately and the following occurs due to low oil
level:
• RUN green light will go OFF
• ABNORMAL CONDITION red light will go ON
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