Eaton DB3B, Technical Manual

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Sounder - dB3B
TM264 June 2019 www.eaton.com
Sounder - DB3B
English
General arrangemeno
185 ±2
19°
19°
POS. 1
POS. 2
POS. 3
200 ±2
30 ±1
64.5 1 (POS. 1 & 2)
68.0 1 (POS. 3)
280 ±3
208 3 FOR SHORT FLARE VERSION
30 ±1
FIXING HOLES
9 ±1
2 POSITIONS
FIXING HOLE
13 ±1
143 ±2
75.90 ±2
2 ENTRIES MAX.
Ex d LONG FLARE VERSION
WITH STANDARD BRACKET
30°
30°
230 ±2
255.5 3
323.5 3 FOR LONG FLARE VERSION
37 ±1
145.5 ±2
9 ±1 TYP.
25°
25°
147.5 2
2 ENTRIES MAX.
Ex de SHORT FLARE VERSION
WITH OPTIONAL SWIVEL BRACKET
FOR Ex d UNIT, POSITION 3 IS USED IF ONLY
1 x M20 or 1 x 1/2" NPT ENTRY IS REQUIRED
ALL DIMENSIONS ARE COMMON TO ALL UNIT VARIATIONS UNLESS OTHERWISE STATED
ALL DIMENSIONS ARE IN MILLIMETRES
5.0 Maintenance
During the working life of the unit, it should require little or no maintenance. GRP will resist attack by most acids, alkalis
and chemicals and is as resistant to concentrated acids and alkalis as most metal products.
However, if abnormal or unusual environmental conditions occur due to plant damage or accident etc., then visual
inspection is recommended.
See below diagram for details of the flameproof joints found in the unit.
WARNING ! – The flameproof joints detailed
below are not intended to be repaired.
FLAMEPATH - 9.5 MIN.
INSIDE SCREW HOLES
Ex d COVER/ENCLOSURE
FLAMEPATH
GLAND ENTRY
18 MIN. WALL THICKNESS
UP TO 2 POSITIONS
CABLE ENTRY
DETAIL