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38

Donaldson Company, Inc.

Magnehelic

®

 Gauge 

The Magnehelic is a differential pressure gauge used to measure the pressure difference between the clean-air and dirty-air 

plenums and provides a visual display of filter change requirements. The high-pressure tap is located in the dirty-air plenum and 

the low-pressure tap is located in the clean-air plenum.
1.  Choose a convenient, accessible location on or near the collector for mounting that provides the best visual advantage.
2.  Plug the pressure ports on the back of the gauge using two, 1/8-in NPT pipe plugs supplied. Install two, 1/8-in NPT male 

adapters supplied with the gauge into the high- and low-pressure ports on the side of the gauges.

3.  Attach the mounting bracket using three, #6-32 x 1/4-in screws supplied.
4.  Mount the gauge and bracket assembly to the supporting structure using two, self-drilling screws.

5.  Thirty-five feet of plastic tubing is supplied and must be cut in two sections. Connect one section of tubing from the gauge’s 

high-pressure port to the pressure fitting located in the dirty-air plenum. Connect remaining tubing from the gauge’s low-

pressure port to the fitting in the clean-air plenum. Additional tubing can be ordered from your representative.

6.  Zero and maintain the gauge as directed in the manufacturer’s Operating and Maintenance Instructions provided.

Magnehelic Gauge Installation

clean-air plenum 

pressure tap location

flat washer

coupling

support structure

mounting surface

mounting screws

mounting bracket

static pressure tee

 90° elbow

adapter

adapter

flat washer

dirty-air plenum pressure tap location

adapter

90° male elbow

two, self-drilling screws

two, pipe plugs

plastic tubing

two adapters

low-pressure port

high-pressure port

Magnehelic gauge

90° male elbow

Содержание RP Baghouse

Страница 1: ...ecific precautions related to worker safety The hazard alert image denotes safety related instructions and warnings in this manual DO NOT install operate or perform maintenance on this collector until...

Страница 2: ...operation and maintenance for the collector purchased Please read the manual before installing operating or performing maintenance on the collector as it contains specific precautions for worker safe...

Страница 3: ...nlet Scroll Installation 25 High Inlet Installation 25 Platform and Ladder Installation 26 Cleaning Mechanism Assembly and Adjustment 27 PD Pump 29 Electrical Wiring 30 Perfect Pulse Controller Instal...

Страница 4: ...ould comply with applicable codes and standards related to combustible dust Electrical installation must be performed by a qualified electrician This equipment is not designed to support site ducts pi...

Страница 5: ...for the fitness of a mitigation strategy or product for a particular installation or application The process owner s final selection of dust collectors and risk mitigation strategies should be based...

Страница 6: ...nd into the hopper This flow path reduces abrasion and assists the cleaning system by supporting an airflow pattern that encourages the dislodged dust pulsed off the filters to move downward into the...

Страница 7: ...e disposed of via bin pneumatic conveyor screw conveyor or other means A rotary airlock is typically used to isolate the dust collection system from the dust disposal system Hopper Transition A transi...

Страница 8: ...nlet As air enters it goes through a preseparation stage and then airflow straightening before it reaches the filters This allows the majority of the dust to drop out into the hopper and the airflow t...

Страница 9: ...ensure proper pulse alignment and proper timing between pulses Cleaning Logic Using signals from the Sensor Switch and Target the Cleaning Logic Controller sets the time delay between pulses and adjus...

Страница 10: ...e setpoints Optional RP Control Panels These options cover the sequencing of the related motors They also provide a HMI Interface Optional Control Panels PerfectPulse Cleaning System RP Controller RP...

Страница 11: ...ic conveying ready valves and high clearance valves for tough to handle dusts Screw Conveyor Can be mounted directly to the hopper outlet with the addition of an RAL at the discharge Useful for loadin...

Страница 12: ...t Operation During normal operation of an RP Baghouse with a tangential inlet dust laden air enters the dirty air inlet The tangential inlet induces a cyclonic action which pre seperates the majority...

Страница 13: ...mp clean air outlet pleated filter access door pleated filter EvenFlow baffles helix hopper pleated filter hopper clean air outlet high body inlet pleated filter access door PerfectPulse cleaning syst...

Страница 14: ...blower Shut Down 1 Shut off main blower Slowly ramping down airflow will allow accumulated dust to drop into the hopper gradually while the collector continues cleaning An abrupt reduction in airflow...

Страница 15: ...ve chain Clean and properly tensioned PD pump drive Belts are intact and don t squeal Arm gearbox oil Gearbox oil level is at the proper level and not excessively dirty Explosion vents Vents are intac...

Страница 16: ...vier than they appear Use appropriate lifting methods to avoid personal injury and or property damage Turn power off and lock out all power before performing service or maintenance work Do not operate...

Страница 17: ...RP_RPH Baghouse 17 4 Once released the filter can be removed and disposed of properly 5 Slowly lower the filter through the tubesheet hole 6 Gently seat the filter flange against the tubesheet...

Страница 18: ...he insert and replace if wear or damage are noted 8 Tip one side of the insert into the filter opening 9 Push down on the other side of the insert to seat it against the filter flange 10 Once all part...

Страница 19: ...he dislodged portion The insert may need to be taken out and put back in 12 If the filter is not seated completely against the tubesheet see below the insert will need to be taken out and the filter p...

Страница 20: ...installed and properly sealed Damper control not adjusted properly Check airflow in duct Adjust damper control until proper airflow is achieved and the blower motor s amp draw is within the manufactu...

Страница 21: ...voltmeter check the PLC supply voltage Correct any power supply issues found If the proper power is supplied and the pulse should be active and still no signal output to the solenoid is present replac...

Страница 22: ...22 Donaldson Company Inc Appendix A Installation...

Страница 23: ...pport framing Note Ensure the inlet has at least five diameters of straight duct prior to the collector inlet including a transition to the full inlet dimensions Inlet transition should have a taper w...

Страница 24: ...ded 2 Use clevis connectors not hooks on lifting slings 3 Use spreader bars to prevent damage to equipment 4 Check the Specification Control drawing for weight and dimensions of the collector and comp...

Страница 25: ...ure remove the braces from the high inlet opening on the collector 2 Place 1 4 in diameter rope type sealant toward the inside and outside edge of the bolt pattern in a figure 8 pattern on the inlet s...

Страница 26: ...ladder and platform components from top to bottom paying close attention to the assembly drawings 5 Make sure that all platform and ladder support brackets are installed and the bottom ladder is secur...

Страница 27: ...o a customer supplied motor starter with overload and short circuit protection 4 Remove all shipping restraints from manifold arms and shipping braces from the cleaning system and cleaning system supp...

Страница 28: ...ry diaphragm cap secondary diaphragm spring primary diaphragm spring secondary diaphragm metal washer facing up primary diaphragm solenoid valve air tank manifold arm see diaphragm valve assembly deta...

Страница 29: ...nts The PD blower should be installed on a level surface Follow the installation instructions provided with the positive displacement blower Gauge Detail intake filter silencer positive displacement b...

Страница 30: ...the preset OFF time is initiated At the end of the OFF time the timer energizes the solenoid valve to provide the ON time cleaning pulse for the diaphragm valve and repeats this cycle until the syste...

Страница 31: ...2RP 88RPH 90RP 24 Spokes 132RPH 136RP 150RPH 156RP 188RPH 200RP 48 Spokes 258RPH 272RP 96 Spokes Operating Temperature Range 20 F to 180 F Solenoid Valves 120V 60 Hz intermittent duty 20 9 watts Inter...

Страница 32: ...20V H1 H2 H3 H4 X1 1 2 X2 STOP FUSE START 1CRM 1CRM 1TR 1 3P OL 3P OL 3P OL 3P OL 1CRM MS1 MS3 MS1 MS4 MS2 G G Off Delay 1TRM L1 MS1 MS1 O L O L O L O L MS4 MS4 MS3 MS3 MS2 MS2 L2 L3 1 TR 1 allows cle...

Страница 33: ...jury and or property damage Turn power off and lock out all power before performing service or maintenance work Do not operate with missing or damaged filters To access filters under the cleaning mani...

Страница 34: ...on Company Inc 3 Tip one side of the insert into the filter opening 4 Push down on the other side of the insert to seat it against the filter lfange 5 Once all parts are seated the filter is installed...

Страница 35: ...he dislodged portion The insert may need to be taken out and put back in X X 7 If the filter is not seated completely against the tubesheet see below the insert will need to be taken out and the filte...

Страница 36: ...letely outside of the filter opening adjust as follows a Turn off the arm drive motor b Disable all motors and devices per site instructions c Note the starting position of the magnet d If the solenoi...

Страница 37: ...escing and particulate filters can be provided with this kit Reference the plant air manifold kit drawing shipped with the collector for installation instructions Optional Plant Air Kit compressed air...

Страница 38: ...gauge and bracket assembly to the supporting structure using two self drilling screws 5 Thirty five feet of plastic tubing is supplied and must be cut in two sections Connect one section of tubing fr...

Страница 39: ...o avoid injury or damage when valve is operating Optional discharge devices may require independent support Discharge devices over 800 lbs must be independently supported Hopper discharge devices must...

Страница 40: ...xplosion must be safely directed outdoors away from areas occupied by personnel to reduce risk of personal injury and or property damage The risk of personal injury and or property damage can be minim...

Страница 41: ...s properly sealed as needed to keep the collector under operating pressure 6 Check that fan exhaust damper if applicable is set to the fully closed position 7 Check and remove all loose items in or ne...

Страница 42: ...from collector as possible 2 Lock Out all energy sources 3 Remove all filters from the collector and dispose of in a suitable fashion for the dust in the collector See Filter Replacement for removal i...

Страница 43: ...______________________________________________________________________________ Dust Properties Kst________________Pmax_______________ MIE_____________ MEC___________________ Accessories_______________...

Страница 44: ...44 Donaldson Company Inc Service Notes Date Service Performed Notes...

Страница 45: ...RP_RPH Baghouse 45 Date Service Performed Notes...

Страница 46: ...46 Donaldson Company Inc Service Notes Date Service Performed Notes...

Страница 47: ...oing warranty on services Products manufactured by a third party Third Party Product may constitute contain be contained in incorporated into attached to or packaged together with the goods Buyer agre...

Страница 48: ...d control it is essential the user evaluate the products to determine whether the product is fit for the particular purpose and suitable for the user s application All products product specifications...

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