1
Call points BG2
English
Call points BG2
TM144 June 2019 www.eaton.com
1.0 Introduction
These manual fire alarm call points have been
designed for use in flammable atmospheres and harsh
environmental conditions. The GRP enclosures are
suitable for use offshore or onshore where light weight
combined with a high level of corrosion resistance is
required.
The units are available with the following options:
Lift flap
Resistors/Zener diodes (encapsulated)
Test key facility
2.0 General safety messages and warnings
All instructions and safety messages in this manual must
be followed to allow safe installation of the device. The
device must only be installed and maintained by correctly
trained site personnel/installers.
I. To reduce the risk of ignition of hazardous
atmospheres and shock, do not apply power to the
device until installation has been completed and the
device is fully sealed and secured.
II. To reduce the risk of ignition of hazardous
atmospheres and shock, keep device tightly closed
when the circuit is energised.
III. Before removing the cover for installation or
maintenance, ensure that the power to the device
is isolated.
IV. Following installation, test the device to ensure
correct operation.
V. Following installation ensure a copy of this manual is
made available to all operating personnel.
VI. When installing the device, requirements for
selection, installation and operation should be
referred to e.g. IEE Wiring Regulations and the
‘National Electrical Code’ in North America. Additional
national and/or local requirements may also apply.
VII. Cable termination should be in accordance with
specification applying to the required application.
MEDC recommends that all cables and cores should
be correctly identified. Please refer to the wiring
diagram provided with the unit.
VIII. Ensure that only the correct listed or certified cable
glands are used and that the assembly is shrouded
and correctly earthed.
IX. Ensure that only the correct listed or certified stopping
plugs are used to blank off unused gland entry points
and that the NEMA/IP rating of the unit is maintained.
X. MEDC recommend the use of a sealing compound
such as HYLOMAR PL32 on the threads of all glands
and stopping plugs in order to maintain the IP rating
of the unit.
XI. The internal earth terminal, where fitted, must be
used for the equipment grounding and the external
terminal, if available, is for a supplementary bonding
connection where local codes or authorities permit or
require such a connection.
XII. When installing the device, MEDC recommends the
use of stainless steel fasteners. Ensure that all nuts,
bolts and fixings are secure.
XIII. A suitable sealing washer must be fitted to all glands
and stopping plugs fitted into the enclosure.
XIV. The end user or installer shall ensure that this
equipment is protected against external influences
which could adversely affect the explosion protection,
or contact the manufacturer if in doubt of the
suitability of this equipment in the environment in
which it is to be installed.
3.0 Installation
General
The unit should be mounted on a vertical surface using
the four off Ø6mm fixing holes in the base. These have
been designed to accept an M5 screw or bolt. Note, the
cover assembly needs to be removed to access the unit
fixing holes.
MEDC recommend the use of stainless steel screws.
Access to terminals
Unscrew the 4 off M5 screws (4.0mm A/F hexagon key)
holding the lid to the base. The cover screws are captive
and should be retained in the cover.
Gently remove the cover assembly from the base of the
enclosure. The cover assembly should remain attached to
the base by means of a retaining strap.
Once termination is complete, carefully replace the
cover assembly back onto the base avoiding damage to
the mating surfaces. Ensure that the retaining strap and
wires are not trapped between the mating surfaces and
that the o-ring is correctly seated in its groove. Ensure
the retaining strap and wires are clear of the microswitch
actuator and operating mechanism. Tighten the 4 off
M5 screws (4.0mm A/F hexagon key) in the cover
assembly evenly. To maintain the IP rating of the unit, the
recommended torque on the cover screws is between
2.5 - 3.0Nm.
Содержание BG2
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