D006-000002
7
4.
Repair, Maintenance and Warnings
WARNING: EXPLOSION HAZARD – DO NOT DISCONNECT EQUIPMENT
WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA IS KNOWN TO BE
FREE OF IGNITABLE CONCENTRATIONS.
WARNING: EXPLOSION HAZARD – SUBSTITUTION OF ANY COMPONENT
MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
Unit and connections must be installed per Control Drawings; for supply connections, use
wires suitable for at least 75
°
C.
Use Copper, Copper-Clad Aluminum or Aluminum Conductors.
4.1
Repairs and installation
End user is responsible for installation of power input to the unit. Repairs and
installation of this unit need to be performed by authorized personnel in accordance
with the International Electrotechnical Commission (IEC), National Electrical Code
(NEC) (NFPA), European Committee for Electrotechnical Standardization (CENELEC),
Canadian Electrical Code (CEC), and any applicable local code regulations. Contact
your local Authority having jurisdiction (AHJ) for assistance in field wiring in
accordance with local code regulations. This unit incorporates static sensitive
components which need to be handled carefully; be sure to follow all ESD safety
procedures. The circuit break of this unit is only for breaking under high current
conditions and should not be used as a disconnect switch. The door assembly of this
unit cannot be opened while in operation.
4.2
Maintenance
Maintenance should be performed by authorized personnel. The only maintenance is
periodic inspections for damage and proper operation. Any damaged parts or
damaged cabling entering into the unit, need to be replaced promptly to ensure that
the safety methods used, and their integrity are still valid.
The following details must be checked during maintenance:
•
Compliance with the permitted temperatures
•
Damage to the enclosure and seals
•
Cables are held securely in place
•
Clean unit enclosure with non corrosive and non combustible chemicals
•
Continuous energization of the overall equipment. A
ny
interruptions in
energization of
any
length requires a visual inspection for condensation /
frost on
any
part followed by a warm-up period involving just the internal
heaters and fans, with the electronics energized and the heaters de-
energized only after the internal temperature exceeds 25°C
Summary of Contents for 7171DA series
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