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4.8 Connect the electrical supply
WARNING: ELECTRICAL INSTALLATION SAFETY
Risk of injury or damage to equipment. Ensure that the electrical installation of the
pump conforms with all local and national safety requirements. It must be connected
to a suitably fused and protected electrical supply with a suitable earth point.
CAUTION: ELECTRICAL INSTALLATION SAFETY
Risk of damage to equipment. Always make the electrical connections to the
pumping system after the equipment has been installed on the vacuum system.
Always disconnect the electrical supply from the pumping system before removing
the equipment from the vacuum system.
Check that the electrical supply is suitable for this equipment. Refer to
data
for the electrical requirements for this equipment.
Make the electrical connection to the pumping system using a cable fitted with an
IEC60320 connector.
A range of suitable cables is available from the supplier.
4.9 Configure the pumping system
As supplied from the factory, the pumping system will control the system as follows:
If system start is selected:
▪
The TAV vent valve will close.
▪
The backing pump will turn on.
▪
The turbomolecular pump will start accelerating up to full rotational speed.
If system off is selected:
▪
The backing pump will turn off.
▪
The turbomolecular pump drive will turn off and the pump will start to decelerate.
▪
The TAV vent valve will open fully from 50% of full rotational speed.
4.9.1 Turbo pump delay
The pumping system can be configured to delay the turbo pump after the backing pump
has started.
Refer to
turbomolecular pump from accelerating under high pressure for a prolonged period if
the volume being pumped is greater than 2 litres. This option is especially useful if the
pumping system uses an XDD1 diaphragm pump.
The
Figure: Turbomolecular pump start delay with XDD1 diaphragm pump
recommended delay period for a turbo / XDD1 pump combination.
* This operation refers to systems which have been fitted with our TAV vent valve
(optional accessory). For more vent options refer to
D39595880_A
D39595880_A - Installation
Turbo setpoint screen
on page 29. The delay is helpful to prevent the
Vent valve screen
Page 22
Table: Electrical
shows the
on page 28.
10/2020 - ©Edwards Limited
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