Installation; Control Box; Electrical Connections; Monitoring Point - Nederman Airflow Alarm Kit Manual De Instrucciones

EN Airflow Alarm Kit
4

Installation

Installation, repair and maintenance work is to be carried out by qualified
personnel using only original Nederman spare parts. Contact your nearest
authorized distributor or Nederman for advice on technical service.
4.1

Control box

NOTE!
• The Airflow Alarm control box and flashlight must be installed outside the
ATEX classified zone.
• The optional flashlight should be situated at a location visible from the
workplace(s) monitored. See figure 3.
Before starting installation, an unused volts-free contact from the fan starter
should be wired through to the Fan ON position.
The electrical enclosure should be mounted near the workplace so that the
alarm LEDs can be clearly seen noted from the operator's working place. See
figure 3.
If the operator does not have a permanent place or where several working
places are supervised by one alarm, one flashlight should be installed so that
the alarm may be clearly seen from the operator's working places.
4.2

Electrical connections

WARNING!
Work with electric equipment is to be carried out by a qualified electrician.
See figure 2 for the wiring diagram, and cabling for terminals for the Airflow
Alarm.
Electrical connections between components should comply with current
national regulations.
4.3

Monitoring point

WARNING!
• If the there is flammable dust or gas present, turn off the fan.
• Eliminate ignition sources such as heat or sparks.
• Wear a dust mask.
NOTE! A non ATEX approved pressure switch must be installed outside of an
ATEX classified zone.
NOTE! Any screws or other fixings used into the air duct must not cause any
collection of dust/chips. If the pressure switch housing is conductive, there
needs to be contact between the pressure switch housing and the metal duct
or ground.
The monitoring point is selected as follows:
14
Risk of personal injury.
Risk of personal injury.