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Safety instructions
G 03885 - Edition 04 - August 12
If loss of purge flow creates a significant risk, then the purge flow must
be monitored externally and a response to loss of purge flow must be
provided by the process equipment and interlocked if necessary.
If pyrophoric materials above the LEL are sent to the pump then
nitrogen should be supplied at a rate to ensure that concentration is
diluted to be below the LEL, in addition an interlock should be provided
to ensure that gas flow to the pump is stopped when nitrogen is lost.
Lock out/tag out (LO/TO) device.
In order to properly secure the pump for installation and/or
maintenance, it is required to lock out/tag out the pump properly in
accordance with OSHA requirement 29 CFR.1910.147.
Electric shock hazard.
Some components have capacitors charged to over 60VDC. When power
is switched off, they keep their charge for a time. Residual voltages
from the filter capacitors can cause electric shocks all the way back to
the mains plug. Wait 5 minutes after power-off before commencing any
work on the product.
Electric shock hazard on touching.
When the main isolator is switched to the «0» position, items located
between the mains connection and the isolator are still under mains
voltage.
Disconnect the mains cable from all power sources before commencing
any maintenance work on the product.
Ensure that the product is connected to an electrical installation:
in compliance with the local and national safety requirements,
equipped with electrical protection (fuses, circuit breaker, …) which
has a suitable earth (ground) point, properly connected.--
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If any corrosive, reactive, flammable, pyrophoric, oxidizing processes can
be sent to the pump, then an exhaust monitor should be used in the
secondary exhaust to ensure that gas flow to the pump is stopped when
secondary exhaust is lost.
In addition an interlock should be provided to ensure that gas flow to
the pump is stopped when nitrogen is lost.
If flammable materials are sent to the pump, the customer will need
to provide a hardware based LEL detection in the secondary exhaust
(capable of detecting at 25% of the LEL) that will stop chemical supply
to the pump when gas is detected at 25% of LEL for that flammable
material.
adixen Vacuum Products - A3H Series Operating instructions
