10.0 ELECTRICAL/ CONTROLS
NOTE: All of the electrical installation must be performed by a qualified electrician and in accordance with local, state, and national codes/regulations/laws (if any).
10.1 The blower motor is typically configured to operate with 208-230/460 volt, 60 cycle, and 3 phase electrical power unless specified otherwise with the equipment order. Electrical power is connected to the J-box on the blower section of the collector. Below the J-Box is a decal that confirms the voltage the motor was set up for at the factory. Should this need to be changed to the other voltage listed above, the motor will have to be rewired in accordance to the data label on the motor. It is recommended that the blower motor be energized through a motor starter with over load protection. The electrical components must be sized and selected in accordance with local, state, and national codes. 10.2 The blower is designed to rotate clock wise when viewed from the motor side. If the blower is running in reverse, the air volume will be approximately 50% of the designed air volume and excessive noise will be generated. Therefore, once the motor is wired, check motor rotation by energizing the blower motor for a brief instant (“JOG”). If direction is reversed, then correct. 10.3 When the reverse jet pulse cleaning system is initiated, a sequential timer board or a digital reverse pulse controller controls the air solenoid valves, releasing a brief burst of compressed air backwards through the filters to expel the collected dust off the filter cartridges and down towards the settling area. This process can be a continuous cycle during normal operation by wiring the sequential timer in parallel with the motor starter coil. Combination Motor starters, IF supplied by Clean Air Industries usually contain a 115V Transformer. IF your unit is equipped with a sequential timer or digital reverse pulse controller, then it is recommended that the timer/ controller be wired to receive power from the transformer. 10.4 IF your unit is so equipped, the sequential timer board, when energized, provides continuous cleaning by sequentially operating the pulse valves with an adjustable time period between pulses. The length of time that the valve is open can also be adjusted. 10.5 IF your unit is so equipped, the digital reverse pulse controller can be set for continuous cleaning or to monitor “ differential pressure ” across the filters and energize the valves for a “specified” differential pressure (high set point). The controller will continue energizing the reverse jet pulse cleaning until the “specified” differential pressure (high set point) is reduced to a “specified” differential pressure (low set point). The digital reverse pulse controller also allows the operator to adjust the length of time that the valve is open, as well as, several other functions. NOTE: Instructions that detail the operation of each pulse control is available under separate cover. Additionally, if your unit was originally ordered with a sequential timer or digital reverse pulse controller, then a copy of the instructions should have been supplied with the unit. 10.6 The sequential timer or the digital reverse pulse controller box must be mounted in a safe, accessible location, where it can be easily monitored. Once mounted, the solenoids on the valves must be wired to the control. As a general rule, the closest valve to the filter access door is valve number 1 and the farthest valve from the door is the last valve of the collector.
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