6 Operation
6.1 Preliminary precautions for use
WARNING
Risk of poisoning when process gases are present in the atmosphere
The manufacturer has no control over the types of gases used with the pump. Process gases are of-
ten toxic, flammable, corrosive, explosive and/or otherwise reactive. There is a risk of serious or fatal
injury if these gases are allowed to escape freely into the atmosphere.
► Apply the relevant safety instructions in accordance with local regulation. This information is
available from the operator’s safety department.
►
The pump exhaust must be connected
to the installation’s dangerous gases extraction sys-
tem.
► Regularly check that there are no leaks where the pump connects to the exhaust pipework.
WARNING
Risk of electric shock in case of contact with the mains connector at power-off
Certain components use capacitors that are charged up to over 60 VDC and that hold their electrical
charge
at power-off
: residual voltages due to filter capacitance can cause electric shock, up to and
including mains voltage levels.
► Wait 5 minutes after power-off before commencing work on the product.
CAUTION
Auditory risk due to exposure to high noise emissions
When the chamber is in the fore pumping phase and the pressure is high, the pump noise level may
exceed 70 dB (A).
► Connect the exhaust port to a chimney or to an exhaust pipe.
► Install an external silencer on the pump exhaust (see chapter "Accessories").
► Wear hearing protection.
Oil capacity
The pump is delivered with filled oil charge.
● Do not modify the oil level.
● Do not drain the pump: this operation is carried out during pump overhaul by
our service centers.
Safety data sheets
You can obtain the safety data sheets for operating fluids from Pfeiffer Vacuum on
request, or from the
Pfeiffer Vacuum Download Center
.
Thermal safety
The pump is fitted with temperature sensors which prevent operation or start-up
when the temperature of the pump body is
< 12°C or > 40°C
.
In order for the pump to operate:
● Operate the pump within the required temperature range.
● Avoid sudden changes of ambient temperature when the pump is running.
The pump automatically restarts when the thermal safety fault disappears.
Before the pump is switched on each time:
1. Check that the pump inlet is properly connected to the pumping line.
2. Check that exhaust pipe line is not clogged and that all the valves in the exhaust system are open.
3. Connect the pump to the mains supply.
Operation
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Summary of Contents for ACP 28 CP
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