6500 Series Purge and Pressurization System
I/O Manual
5
1.1.9 Conditions of safe use
Danger!
Non-observance of conditions of safe use will result in personal injury or death.
6500 control unit
1. The purge control unit has an operating temperature class of 135 ºC (T4 temperature class). This
temperature shall be considered when mounted to an enclosure.
2. When the purge control unit is mounted to an enclosure, the complete unit shall be evaluated to IEC/
3. Intrinsically safe cables extending from the main enclosure must be provided with at least 0.25 mm
insulation thickness per conductive core to maintain segregation between intrinsically safe circuits.
4. The nonmetallic touchpad and display does not pose an electrostatic discharge hazard under normal
use conditions. Use only water damp cloth and allow to air dry for cleaning device. Do not use or install
5. In hazardous dust environment, regularly remove dust from the control unit enclosure and EPV vent to
prevent excessive temperature rise. See certificate for full information.
6. Cable glands and/or blanking elements used with this system shall be properly ATEX/IECEx rated for
the environment they are being used in, with the proper temperature ratings. Only the cable gland size
identified for a particular hole shall be fitted to the hole.
For systems that incorporate the UIC in the lid of the enclosure, system shall not be mounted such that
the UIC is facing up.
8. Attention: The maximum cable length between the vent or UIC and the control unit is 245 ft
9. The relay contact circuits shall be externally fused at installation. Each circuit shall have a fuse that
is rated for the voltage type being used (AC or DC) with a breaking capacity of at least 1500 A. The
rating of the fuse for the enclosure power connections shall not exceed 11 A. for the Aux relay, it shall
not exceed 3 A.
EPV-6500 pressure relief vent
1. The EPV vent has an operating temperature class of 135 ºC (T4 temperature class). This temperature
shall be considered when mounted to an enclosure.
2. When the purge control unit is mounted to an enclosure, the complete unit shall be evaluated to IEC/
3. Cables used to connect to an EPV- vent must be provided with at least 0.25 mm insulation thickness
per conductive core to maintain segregation between intrinsically safe circuits.
4. In hazardous dust environment, regularly remove dust from the EPV vent to prevent excessive
temperature rise. See certificate for full information.
5. In hazardous dust environment, the connector end of the vent shall be protected from direct exposure
of a UV light source. See certificate for full information.
6. Only EPV-6000-xx-xx vents can be connected to any certified Model 6000 control system.
Only EPV-6500-xx-xx vents can be connected to any certified 6500 control system.
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