Maintenance; Certification/Approvals; Atex Units - MEDC DB1 Manuel Technique

Figure 1. GENERAL ARRANGEMENT
BO±1
ø175±2 140±1 CRS

4.0 Maintenance

During the working life of the unit, it should require little
or no maintenance. However, if abnormal or unusual
environmental conditions occur due to plant damage or
accident etc., then visual inspection is recommended. If
the unit requires cleaning, then only clean exterior with a
damp cloth to avoid electro-static charge build up. If a unit
fault should occur, then the unit can be repaired by MEDC
or by an authorised repairer of Ex equipment.
All parts of the unit are replaceable. If you acquired a
significant quantity of units, then it is recommended
that spares are also made available. Please discuss your
requirements with the Technical Sales Engineers
at MEDC.
Table 2.
DB1H spares
DESCRIPTION
Plastic flare assembly (red)
Other colours available
O-ring
Electronics assembly (12/24Vdc - dual tone)
Other assemblies available
Cover screw (4 off required)

5.0 CERTIFICATION/APPROVALS

IECEx units
Certified to IEC60079-0 and IEC60079-1
DB1
Ex d unit (IEC certification No. IECEx BAS 10.0065X)
Ex db IIB T6 Gb (Tamb. -20°C to +60°C)
TECHNICAL MANUAL FOR THE SOUNDERS – DB1 & DB1H TM153 Issue I August 2019 www.eaton.com
167,5±2 (DB1)
216±2 (DBH)
FIXING HOLES
140±1 CRS
ø9±1
BO±1
2 POSITIONS.
Tone freq/description
PART No.
PX99901540
Contact MEDC
PX99900750
PX99900335
Contact MEDC
PX99900818
Technical Manual for the Sounders – DB1 & DB1H
103,5±2 (DB1)
152±2 (DB1H)
DB1H
Ex d unit (IEC certification No. IECEx BAS 10.0064X)
Ex db IIB T5 Gb (Tamb. -20°C to +70°C)
The IECEx certificate and product label carry the IECEx
equipment protection level marking
Gb
Where Gb signifies suitability for use in a Zone 1 surface
industries area in the presence of gas. re-entrant horn

ATEX units

Certified to EN60079-0 and EN60079-1
DB1
Ex d unit (ATEX certification No. Baseefa02ATEX0207X)
Ex db IIB T6 Gb (Tamb. -20°C to +60°C)
DB1H
Ex d unit (ATEX certification No. Baseefa02ATEX0209X)
Ex db IIB T5 Gb (Tamb. -20°C to +70°C)
The ATEX certificate and product label carry the ATEX group
and category marking:
II 2 G
Where:
Signifies compliance with ATEX
II Signifies suitability for use in surface industries
2 Signifies suitability for use in a zone 1 area
G Signifies suitability for use in the presence of gases
(DB1H) DNV Type approved (H and 24VDC versions only).
Approved according to IEC60945: Maritime navigation and
radio communication equipment and systems.
The equipment is classed as exposed.
Minimum compass safe distance is 5m.
English
30±1
9±1
3