Dwyer DPM - Manual (Page 12)

Particulate Monitoring Systems
Installation & Operating Manual
Document No. 210-1003-M Page 5 ©2007
3. Control Unit Installation
3.1 Location
The following factors should be considered when determining the control unit location:
ƒ Locate at a position that is convenient for setup and operation
ƒ Mount at eye level
ƒ Mount to a flat surface in a vertical orientation
ƒ Do not mount to surfaces with excessive heat or vibration
INSTALLATION PERSONNEL
• Only appropriately licensed professionals should install this product.
• For operator safety and to prevent ignition of flammable or combustible
atmospheres always disconnect power before servicing.
CONTROL UNIT LOCATION
• The control unit may only be located in ordinary locations (non-hazardous
safe areas).
• Do not locate the control unit in a hazardous area unless it is inside an
appropriately rated explosion-proof or purged enclosure and supplied as
part of an approved hazardous area system with approved control unit and
approved sensor assembly.
• Do not locate the control unit in or near sources of very high electrical noise
such as a Variable Frequency Drive (VFD) or Motor Control Center. Locate
the control unit at least 10 feet from these sources and, if possible, power
the control unit from a separate power source. If power is supplied from the
same branch circuit or a circuit containing electrical noise, install a quality
line filter such as an Islatrol IC+102.
Mounting: Mounting holes are integrated into the enclosure base. Mounting hardware should be
capable of supporting five times the control unit weight. Refer installation drawings for dimensions.
3.2 Wiring
An appropriately licensed electrician must perform all electrical connections.
CONTROL UNIT WIRING
• All wiring must be rated 250V minimum.
• The control unit must be mounted within sight of an appropriate electrical
disconnect (on/off switch) to ensure safety during installation and
maintenance.
• The coaxial cable must be in conduit that is separate from all other circuits.