Code
Description
U1-03
Output current (A)
6.3.2 Transient overload protection
The pump has an overload protection function. If the load is more than the capacity of
the pump, the pump will stop momentarily and restart automatically to operate. The
cycle will repeat for a maximum 10 times. If the pump continues to be in the overload
condition:
▪
the pump will trip
▪
the alarm indicator LED will show a constant RED
▪
the pump will stop.
6.3.3 Status indicators
Refer to
Figure: Interface control panel
on page 9 for details.
6.4 Shut down the pump
CAUTION: PUMP SUPPLY ISOLATION
Risk of injury. Do not remove the inlet connections until the pump stops rotating and
the power and nitrogen supply has been isolated. The pump can take up to 3 minutes
to fully stop.
WARNING: ELECTRICAL SUPPLY
Risk of damage to equipment. Do not disconnect the pump from the electrical supply
until the pump has fully stopped.
You can shut down the pump with:
▪
the front panel controls
▪
the digital operator (if installed)
▪
the 15-way D-type connector in either parallel or serial control mode.
Note:
Only the item in control can stop the pump. If the pump is in auto
‑
run mode, use
the stop button on the user interface control panel to stop the pump.
To shut down the pump, obey the instructions that follow:
1.
Close the vacuum system isolation valves (where installed) to prevent the flow of
the liquid back into the vacuum system.
2.
Stop the pump system with the applicable control source that follows:
▪
manual control mode
‑
push and hold the stop button (
on page 9, item 3)
▪
parallel control interface
‑
use the start, stop control input
▪
serial control mode
‑
send a stop command
Page 27
A77010880_B - Operation
