PTM PMO1450, Инструкция по сборке

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Montageanleitung / Assembly guide
Seite 27 von 36
C. EX PROTECTION
For use in potentially explosive areas.
C.1 General safety precautions
The installation instructions are to be read by the motor operator prior to commissioning and the precautions
observed during operation.

Only operate the motor in explosion protected systems.

Create equipotential bonding. (on the rear of the motor using the M4 lens head screw)

Only use conductive air hoses.

Compressed air generated and treated outside the Ex-area is used as a medium.

Vent the housing vent via the M5 connection outside of the potentially explosive area.
Strict compliance to the accident prevention regulations and any additional national safety regulations is
required at all times.
C.2 Motor versions
Compressed air motors are non-electrical equipment and do not require approval when used in
Zones 1 and 21.
The compressed air motors are available in various designs and upgrades.
These motors are used, for instance, in paint shops (solvent-based paints and coatings, e.g. petrol, kerosene)
and mills, silos etc.
The qualification with regard to the surface temperature is T5; for all gases, vapours and mists with an ignition
temperature > 100°C, the devices are no ignition sources. In the dust ex-area, 100°C is the reference
temperature for further considerations with respect to a safety clearance from the smouldering temperature. A
decision can be made only by the operator.
The gearbox mounted to the radial piston motor is a planetary gearbox. It reduces the drive speed for each
gear setting by one third and increases the max. torque by a factor of 3.
ATTENTION ! C hange direction of rotation only after the motor is stopped to standstill . See A.1 / 10
The PMO radial piston motor with or without mounted gearbox can be used as follows:
o
In Zone 1 (gas-ex, Category 2G) in explosion group IIA and IIB.
o
In Zone 21 (dust-ex, Category 2D) for non-conductive dusts with a minimum ignition energy > 3 mJ
C.3 Verification of Ex-protection
Prior to commissioning in a potentially explosive environment, verification of the following is required:
5. compressed air motor explosion-protected?
6. System explosion-protected?
7. Equipotential bonding created?
8. Conductive hoses and hose connections used?