Electrical Voltage - Bühler technologies P2.2 Atex Guía Rápida

P2.x ATEX
DANGER

Electrical voltage

Electrocution hazard.
a) Disconnect the device from power supply.
b) Make sure that the equipment cannot be reconnected to
mains unintentionally.
c) The device must be opened by trained staff only.
d) Regard correct mains voltage.
DANGER
Danger of explosions, danger of poisoning from poison-
ous corrosive gases
During maintenance work, depending on the medium used,
explosive and/or poisonous corrosive gases could escape, and
this could lead to a danger of explosion or could be hazardous
to health.
a) Inspect the leak tightness of your sampling system before
putting the device into operation.
b) Ensure that gases that are hazardous to health are dis-
charged safely.
c) Turn off the gas supply before beginning any mainten-
ance or repair work and flush the gas lines with inert gas
or air. Secure the gas supply so that it cannot be turned
on unintentionally.
d) Protect yourself during maintenance from poisonous /
corrosive gases. Wear appropriate protective equipment.
DANGER
Explosion hazard
Life and explosion risk may result from gas leakage due to im-
proper use.
a) Use the devices only as described in this manual.
b) Regard the process conditions.
c) Check tubes and hoses for leakage.
DANGER
Adiabatic compression (explosion hazard)!
In case of adiabatic compression, high gas temperatures may
occur. The operator is responsible to consider this situation.
Make sure to obey the allowed technical specifications and
ambient conditions (see data sheet), take special attention to
the media temperature with respect to temperature class T3
or T4. These vary in addition to gas composition and ambient
conditions. Where necessary, the operator must install tem-
perature sensors for monitoring and must automatically shut
down the sample gas pump should the temperature exceed
the limits.
BX420002 ◦ 05/2019
DANGER
DANGER - Explosion danger in case of high temperat-
ures
Temperature of the device depends on the medium temper-
ature. Correlation between medium temperature and tem-
perature classes is given in the data sheets.
Observe maximum temperature classes T3 or T4 for the
pumps and the allowed ambient temperatures and medium
temperatures.
CAUTION
Tilting risk
Damage of the device
Secure the device against any sudden translocation during
maintenance.
CAUTION
Hot surface
Burning hazard
According to the product type and operation conditions, the
temperature of the housing may exceed 50 °C during opera-
tion.
Depending on the conditions at the installation site it may be
necessary to provide these areas with appropriate warning
signs.
3 Transport and storage
The products should be transported only in its original pack-
aging or a suitable replacement.
When not in use, protect the equipment against moisture and
heat. Keep it in a covered, dry and dust-free room at a temper-
ature of -20 °C to +40 °C (-4 °F to 104 °F).
Outdoor storage is forbidden. As a matter of principle, the op-
erator must regard all applicable standards according preven-
tion of damage due to lightning, which may otherwise dam-
age the sample gas pump.
The storage room must not be equipped with any ozone-pro-
ducing devices like fluorescent light sources, mercury arc
lamps, electric high voltage devices.
Before restarting the pump after long-term storage or an ex-
tended standstill period, the insulation resistance of the wind-
ing phase-to-phase and phase-to-ground must be measured.
Moist windings could cause leakage current and flash-over.
The insulation resistance of the stator windings must be at
least 1.5 MΩ, measured at a winding temperature of 20 °C
(68 °F). For lower values, drying the winding is required.
The motor shaft should be rotated in regular intervals to en-
sure sufficient lubrication of the bearings in long term.
To do this, unscrew the three cross-head screws of the housing
cover and remove the cover (see fig. 1, fig. 2). The crankshaft is
now visible.
Bühler Technologies GmbH 9