G version and CV version
A gas purge circuit protects the low- and high-pressure ball bearings and dilutes trace amounts of corro-
sive gases.
The pump must be connected to a dry and filtered nitrogen supply that has the required characteristics
(see chapter “Nitrogen characteristics”).
1. Connect the neutral gas pipe to the 1/4 BSPT connector provided for this purpose (flexible or rigid
pipe supplied by the customer).
2. Install an isolation valve on the neutral gas injection circuit, as close as possible to the pump. This
enables the pump to recover its initial pumping performances when gas injection is not used.
3. The purge maximum pressure must not exceed 300 hPa (relative).
LG version
The air injection line flow rate is ensured by a jet, which is integrated into the pump.
5.3 Check that the installation is leaktight
When the product leaves the factory, product leaktightness under normal operating conditions is guar-
anteed. The operator must maintain this level of leaktightness, especially when pumping dangerous
gases. For more information concerning leak tests, please contact our service center.
1. Perform a leak test on the entire pumping line after installation.
2. Carry out regular checks to ensure that there are no traces of the pumped gases in the surround-
ing environment and that no air is entering the pumping line during operation.
5.4 Electrical connection
WARNING
Risk of electric shock due to non-compliant electrical installations
This product uses mains voltage for its electrical supply. Non-compliant electrical installations or in-
stallations not done to professional standards may endanger the user’s life.
► Only qualified technicians trained in the relevant electrical safety and EMC regulations are au-
thorized to work on the electrical installation.
► This product must not be modified or converted arbitrarily.
WARNING
Danger of electrocution by contact during maintenance or overhaul
There is an electric shock hazard in case of contact with a product powered on and not electrically
isolated.
► Before carrying out any work, set the main switch to
O
.
► Disconnect the power cable from the mains.
► Secure the installation correctly by tagging and locking (LO/TO) the system to prevent uninten-
tional re-engagement.
NOTICE
Risk of electromagnetic disturbance
Voltages and currents can induce a multitude of electromagnetic fields and interference signals. In-
stallations that do not comply with the EMC regulations can interfere with other equipment and the
environment in general.
► Use shielded cables and connections for the interfaces in interference-prone environments.
Electrical safety
The pump is equipped with an
I/O
main switch that isolates the product from the power line when it is in
O
position.
The pump is equipped with a frequency converter in compliance with EC standards that allows the
pump to run automatically at high and low voltages. The frequency converter is protected against short-
Installation
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Summary of Contents for ACP 28 CP
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