Installation, Operation and Maintenance manual
11
PowerCore
®
Dust Collectors - Series CPV
Control of ancillary equipment and interlocks
If the collector is fitted with a Power Box, this can be configured to operate a complete
dust collector system and accept inputs from other devices (e.g. PLCs, level probes,
explosion relief panel detectors etc.). Where the Power Box is used for the complete
system all necessary interlocks will be built into the system.
The design of the electrical circuitry controlling equipment associated with the collector
should be such that breakdown of any one of the associated pieces of equipment
does not cause a complete blockage of the collector.
It is therefore important that the starters of all ancillary equipment be interlocked to
ensure:
1. Correct starting sequence;
2. Operation of a warning system, or alternatively stoppage of the entire installation
in the event of a failure of any of the auxiliary motors;
3. Correct stopping sequence.
EEx controls
When the dust collector is to be installed in a hazardous area where there is any risk
of fire or explosion, the collector will be marked for the area(s) it can be safely used
within (refer to collector serial nameplate). The collector may be fitted with either of
the following control systems:
• EExd solenoids and remote controller
When this option is fitted, the dust collector has its solenoid valves in an EExd
IIb T6 enclosure mounted on to the collector body. A controller, housed in an
IP66 box, is supplied loose. This must be installed in a safe area and connected
to the solenoid valves on the dust collector using suitable cabling (not supplied).
It is recommended that cable with a core size of maximum 1.5 mm² is used.
The maximum length of cabling that can be used is 100m.
Instructions for setting up the controller are the same as those for the standard
controller.
• PT Controller
The PT Controller is a pneumatically operated device which operates the diaphragm
valves in sequence, therefore the need for an electrical supply is eliminated.
The controller is supplied complete with air regulator and is normally bracket-
mounted directly to the collector.
For PT Controller connections and set-up, refer to Publication 2697.
Explosion protection
Where an explosion stiffened collector is supplied, adequate explosion relief
should be provided in the connected vessel that would prevent the explosion
pressure exceeding 0.42 bar. The explosion relief should also allow for the
volume of the PowerCore CPV dust collector.
