Maintenance - MEDC HORN DB3 Technical Manual

4. MAINTENANCE

During the working life of the unit, little or no maintenance is required. However,
if abnormal or unusual environmental conditions occur due to plant damage or
accident etc., then visual inspection is recommended.
If a fault should occur, it is recommended that the unit be returned to MEDC for
repair. All parts are replaceable.
If you have acquired a significant quantity of units, it is recommended that spares
are also made available. Please discuss your requirements with the Technical
Sales Engineers at MEDC.
5. CERTIFICATION/APPROVALS
Please refer to marking on the unit for specific approval details.
• UL listed for use in
USA (USL) and
Canada (CNL)
• UL Standards
6. CERTIFIED TEMPERATURE
–55°C to +55°C
–67°F to +131°F
© MEDC 2001
Class I, Zone 1, AExd IIC T4.
Class I, Division 2, Groups A, B, C & D.
Class II, Division 2, Groups F & G.
UL 2279 & UL464.
06/01