Maintenance, Overhaul And Repair - Pfannenberg BExBG05D-P Bedienungsanleitung

14) Settings
14.3 Synchronised Operation
All BExBG05D-P beacons that are connected to the same sup-
ply line will have a synchronised flash rate at one flash every
second. To ensure that the units will be synchronised check that
the pin header is not fitted, i.e. the two header pins are not
shorted together (see Figure 10).
Not shorted to-
gether
Fig. 10 Header Pin Settings
14.4 Flip-Flop Operation
Two beacons can be mounted close to each other to form a flip-
flop operation, where the beacons will flash alternately. To
achieve this mode of operation, fit a pin header to the flip- flop
header pins on the electronics board, i.e. the two header pins
are shorted together, (see figure 10) on one of the two beacons.
The first flash on the beacon that has the header fitted will be
delayed by ½ second. The two beacons will then flash alter-
nately every ½ a second.
15) Interchangeable & Spare Parts
Warning – Hot surfaces. External surfaces
and internal components may be hot after
operation, take care when handling the
equipment.
The beacon cover is interchangeable, contact manufacturing
plant for a replacement cover available in various colours.
To change the cover, unscrew the M5 socket head screws and
remove the M5 screws, M5 spring & flat washers.
Fig. 11 Removal of cover
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Remove the guard and replace the old cover with the new cover.
Old
Cover
Shorted
together
Fit the guard back on to the cover and casting, align the holes
of the guard, cover and casting. To reattach the cover, the fix-
ings MUST be in the order shown in figure 13.

16) Maintenance, Overhaul and Repair

Maintenance, repair and overhaul of the equipment should only
be carried out by suitably qualified personnel in accordance with
the current relevant standards:
EN60079-19
IEC60079-19
EN 60079-17
IEC60079-17
To avoid a possible ELECTROSTACTIC CHARGE the unit
must only be cleaned with a damp cloth.
Units must not be opened while an explosive atmosphere is pre-
sent.
M5x16 Hex
Socket Screw
If opening the unit during maintenance operations a clean envi-
ronment must be maintained and any dust layer removed prior
to opening the unit.
Flameproof threaded joints and cemented joints are not in-
tended to be repaired.
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New Cover
Fig. 12 Changing of cover
M5x16 Hex Socket Screw
M5 Spring Washer
M5 Plain Washer
Guard
Cover
Fig. 13 Cover and Guard Fixtures
Explosive atmospheres - Equipment re-
pair, overhaul and reclamation
Explosive atmospheres - Electrical installa-
tions inspection and maintenance
30017-015-1e