Hypertherm HyPrecision 100D, Instruction Manual

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Shutdown II Messages
Shutdown II messages indicate a severe fault that requires the motor and intensifier to shut down. The
red light will flash and one of the following fault images appears on the LCD screen.
•
HYDRAULIC OIL LEVEL LOW
•
MOTOR FAULT
Low Hydraulic Oil Level
The probe in the hydraulic oil tank has a float switch. When the oil level is too low, the float drops and
the low hydraulic oil level alarm is triggered. The most likely cause of this alarm is loss of oil through
routine maintenance. If this is the case, add oil to the appropriate level, reset the fault and resume
normal operation. If the oil loss is not due to routine maintenance, find out where the oil has gone. If the
oil is in the catch pan at the bottom of the pump, it should be fairly easy to find the leak. If it is not in
the bottom of the catch pan, it could be leaking undetected through the heat exchanger. Repair all leaks
and fill the tank with the specified hydraulic oil to the top of the sight gauge. Press
RESET to clear the
fault and resume normal operation.
Motor Fault
The main motor starter (MS-MAIN) in the pump electrical enclosure has thermal overload protection to
prevent motor damage from excessive heat. Refer to
Motor Starter Circuits and Thermal Overloads
in the Electrical System section for important information regarding motor service and safety.
There are several reasons why this fault may be occurring. One common reason for a motor fault
message is a blown fuse corresponding to that output on the PLC. A fuse may be blown for several
reasons including a failure of a device on one of the other outputs using the same fuse. In the event that
a device on the output other than the motor causes the motor fault, make sure that the problem device is
repaired or replaced before resetting the fault and starting the pump again.
Another possible cause is excessive water demand. If an orifice has broken or plumbing is leaking
water, demand may be high enough to cause the motor to overload. Hypertherm pumps are setup with
protection from this scenario. Reduce water demand and reset thermal overload.
A less likely cause of this fault may be a bad hydraulic pump, faulty motor, or an incorrect thermal
overload setting. These conditions are very rare. Please contact an authorized Hypertherm service
representative if any of these conditions occur.
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