MEDC XB15 - Manuel (Page 5)

Removing / replacing xenon tube
CAUTION: Before removing the cover assembly, ensure that the power to the unit is isolated.
Unscrew the set screw in the flange of the cover 3 turns minimum (2.0mm A/F hexagon key). Unscrew
and remove the cover and lens assembly using the spanner supplied to gain acess to the inside of the
unit, thus exposing the xenon tube.
Remove the old tube by unscrewing the terminal block fixings. The replacement tube can now be fitted
(see xenon tube installation sheet, which is supplied with the replacement tubes)
Replace the cover and lens assembly, ensuring the cover is screwed down fully and that the cover seal is
correctly seated during re-assembly. There should be a maximum gap of 1/128” (0.2mm) between the
faces of the cover and enclosure to ensure correct o-ring compression. Re-tighten the set screw (2.0mm
A/F hexagon key) in the cover flange to secure the cover into position.
5.0 CERTIFICATION/APPROVALS
Please refer to the marking on the unit for specific approval details.
UL listed for use in Class I, Div. 2, groups A, B, C, & D
USA (USL) and Canada (CNL) Class II, Div. 2, Groups F & G
Class I, Zone 1, AExd IIC; Exd IIC
UL Standards UL60079-0, UL60079-1, UL50
UL1638 – Ordinary Locations
UL1638 UXUB Marine Listed
CSA-C22.2 No. 205, CSA E60079-0, CSA E60079-1
ANSI/ISA 12.12.01-2013
CSA-C22.2 No. 157-92, No 205,
60079-0:2011, 60079-1:2011
ULC Standards CAN/ULC-S526-07
6.0 CERTIFIED TEMPERATURE
T5/100°C (Tamb -55°C to +40°C) (-67°F to +104°F)
T4/135°C (Tamb -55°C to +70°C) (-67°F to +158°F)
7.0 FUNCTIONAL SAFETY
Introduction
The XB15 Beacon has been designed for use in potentially explosive atmospheres and harsh environmental
conditions. The glass reinforced polyester enclosures are suitable for use offshore or onshore, where light
weight combined with corrosion resistance is required.
The safety function of the Beacon is to provide an intermittent spherical visual warning light when the
correct voltage is applied to the unit. The DC versions of the Beacon are designed to operate on a supply
voltage tolerance of +/- 20%; the AC versions of the beacon are designed to operate on a supply voltage
tolerance of +/- 10%.
The telephone initiate versions of the Beacon are not included in this safety manual.
Under No fault (Normal) Operating conditions the XB15 Beacon will provide a spherical visual warning
light when required by the system.
© MEDC 2015 02/15