MEDC LD15 UL, Техническое руководство

Страница: 9 / 24

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.
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. 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.
If required, replacement of the electronic sub-assembly can be carried out by competent site personnel. See previous page for
details of gaining access to the electronic sub-assembly. Other repairs should be undertaken by returning the unit to MEDC.
During maintenance, if the cover/lens assembly grease needs to be re-applied, a PFPE (Perfluoropolyether) based grease
such as KRYTOX GPL203 by DuPont of Perfluorolube 22/6 by Performance Fluids Ltd should be used, to prevent damage
to the O-ring.
6.0 SPECIAL CONDITIONS FOR SAFE USE
1. Painting and other surface finishes, other than those applied by the manufacturer, are not permitted
2. In order to maintain the dust tight integrity of the enclosures (IP6X), the threads of cable entry devices and stopping
plugs shall be sealed in accordance with the applicable code of practice for flameproof installation.
7.0 CERTIFICATION/APPROVALS
Please refer to the marking on the unit for specific approval details
T-rating (T
G
) T
amb.
T5 -67°F to +158°F (-55°C to +70°C)
T6 -67°F to +131°F (-55°C to +55°C)
UL certified 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, AEx d IIC; Ex db IIC Gb
Standards UL 60079-0 6th Edition
UL 80079-1 6th Edition
UL 1638, 4th Edition
UL 1638a, 1st Edition
ANSI/ISA 12.12.01-2013
CSA-C22.2 No. 205
CSA-C22.2 No. 60079-0:15
CSA-C22.2 No. 60079-1:16
CSA-C22.2 No. 157-92
CAN/ULC-S526-07 Ed. 3
© MEDC 2018
01/18