LEYBOLD ECODRY plus 25, Operating Instructions Manual, Page: 31 / 64

▪ The maximum running speed provided by the analogue speed control
source is clamped by the maximum standby speed setting (100% of
the default run speed).
6.7 Start the pump
WARNING: EXHAUST PIPELINE BLOCKAGE
Risk of damage to equipment. Do not operate the pump if the exhaust pipeline is
restricted or blocked as the pump will not operate correctly and may be damaged.
To start the pump:
1. Make sure that the vacuum system isolation valve is closed (if
installed).
2. Make sure that the mains supply to the pump is isolated.
3. Connect a recommended lead to the electrical socket on the pump.
Refer to
Figure: General view .
4. Supply the power.
5. Start the pump with the appropriate control source:
▪ Use the start button in manual control mode, refer to Figure:
Interface control panel .
▪ Use the start/stop control input in parallel control mode.
▪ Use start command in serial control mode.
6. Open the vacuum system isolation valve, if installed.
6.8 Shut down the pump
CAUTION: PUMP SUPPLY ISOLATION
Risk of injury. Do not remove the inlet connections until the pump has been allowed
to stop rotating and the power and gas supply has been isolated. The pump can take
up to three minutes to stop completely.
WARNING: ELECTRICAL SUPPLY
Risk of damage to equipment. Do not disconnect the pump from the electrical supply
until the pump has stopped completely.
The pump can be shut down with either the front panel controls or the X1
SUB-D 9 pin (male) connector in either parallel or serial control mode.
Note:
If the pump is to be shut down for storage, remove any process gases by
running on a gas ballast for at least one hour.
To shut down the pump:
1. Close the gas ballast
2. Close the vacuum system isolation valves to prevent suck-back into
the vacuum system (where fitted).
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300902516_002 - 10/2020 - © Leybold
Operation