Honeywell DC3, DC2, DC6, DC4 Troubleshooting, Difficulty Probable Cause Remedy Pump does not start

Page 27

11. Troubleshooting

Difficulty

Probable Cause

Remedy

 

 

 

 

Pump does not start

Faulty power source.

Check power source.

 

 

Blown fuse, circuit breaker.

Replace - eliminate overload.

 

 

Broken wire.

Locate and repair.

 

 

Wired improperly.

Check diagram.

 

 

Process piping blockage.

Open valves, clear other obstructions.

No delivery

Motor not running.

Check power source. Check wiring

 

 

 

diagram (see above).

 

 

Supply tank empty.

Fill tank.

 

 

Lines clogged.

Clean and flush.

 

 

Closed line valves.

Open valves.

 

 

Ball check valves held open with solids.

Clean – inspect, flush with clear fluid.

 

 

Vapor lock, cavitation.

Increase suction pressure.

 

 

Prime lost.

Re-prime, check for leak.

 

 

Strainer clogged.

Remove and clean. Replace screen if

 

 

 

necessary.

 

 

Stroke adjustment set at zero.

Increase stroke length setting.

Low delivery

Motor speed too low

Check voltages, frequency, wiring, and

 

 

 

terminal connections. Check nameplate

 

 

 

vs. Specifications.

 

 

Check valves worn or dirty

Clean, replace if damaged

 

 

Calibration system error

Evaluate and correct

 

 

Product viscosity too high

Lower viscosity by increasing product

 

 

 

temperature or dilution. Increase pump

 

 

 

and/or piping size

 

 

Product cavitating

Increase suction pressure.

Delivery gradually

 

Check valve leakage.

Clean, replace if damaged.

drops.

Leak in suction line.

Locate and correct.

 

 

Strainer fouled.

Clean or replace screen.

 

 

Product change.

Check viscosity and other variables.

 

 

Supply tank vent plugged.

Unplug vent.

Delivery erratic.

Leak in suction line.

Locate and correct.

 

 

Product cavitating.

Increase suction pressure.

 

 

Entrained air or gas in product.

Consult factory for suggested venting.

 

 

Motor speed erratic.

Check voltage and frequency.

 

 

Fouled check valves.

Clean, replace if necessary.

 

 

Inadequate backpressure

Increase discharge pressure to obtain a

 

 

 

minimum pressure difference of 5 pis

 

 

 

from suction to discharge

Delivery higher than

Suction pressure higher than discharge

Install backpressure valve or consult

rated.

pressure.

factory for piping recommendations.

 

 

Back pressure valve set too low.

Increase setting.

 

 

Back pressure valve leaks.

Repair, clean, or replace.

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Contents Models DC2, 3, 4, 5, Installation, Operation Maintenance InstructionSafety Considerations Pulsafeeder Factory Service PolicyTable of Contents 14.1 Principles Of Operation IntroductionReagent Head Assembly Control AssemblyGear Ratio Assembly Location InstallationEquipment Inspection StoragePiping System Discharge Pressure Requirements Suction Pressure RequirementsOutput Adjustment Equipment StartupFastener Inspection Process flow Priming the Reagent HeadSample flow calibration curve CalibrationLubrication MaintenanceWet end components Wet End Removal, Inspection, & ReinstallationDiaphragm Removal & Reinstallation General Description Check ValvesCheck valves, DC3 and DC Check Valve Removal & Reinstallation, Cartridge type DC5 and 6 check valves, metal construction Gearset Removal Motor Removal & ReinstallationGearset components Gearset Replacement Replacement Parts KOPkit ProgramOrdering KOPkits or Parts Pump Model Wetted Material Connection Type KOPkit number KOPkit numbers by modelNPT Model Number IdentificationPvdf Wet End Materials ReferenceDifficulty Probable Cause Remedy Pump does not start TroubleshootingDifficulty Probable Cause Remedy Noisy gearing Pressure Relief Valves Piping AccessoriesLetters reference dimensional table on next Dimensional DrawingDC5 PP/PVDF Parts diagram, DC2 Parts Diagrams and Parts ListsDescription QTY Part Number Bill of Materials, DC2Name TAG Bill of Materials, DC3 4 7 0 0 4 1 S T L This page intentionally left Blank Parts Diagram, DC4, 5, Bill of Materials, DC4 DC4/5 Gearbox Bill of Materials, DC5 Tiebar Bill of Materials, DC6 DC4/5/6 Gearbox Page Standard Pump Operations

DC5, DC6, DC3, DC4, DC2 specifications

Honeywell has long been a leader in the development of advanced technological solutions across various industries, and its line of DC models—DC2, DC3, DC4, DC5, and DC6—showcases that commitment to innovation. These devices are designed to enhance efficiency, safety, and connectivity across diverse applications, primarily in the realms of industrial automation, aerospace, and building management systems.

The Honeywell DC2 unit stands out with its compact design, making it ideal for environments where space is limited. It features a rugged build quality that can withstand harsh conditions, and it is equipped with advanced sensing technologies. This model is often preferred for its ease of integration with existing systems, allowing users to leverage advanced analytics capabilities without significant infrastructure changes.

The DC3 takes connectivity a step further, providing enhanced networking capabilities that facilitate real-time data monitoring and control. Its user-friendly interface allows operators to interact effortlessly with the system, ensuring that critical information is easily accessible. This model is particularly valued in manufacturing environments for its support of IoT technologies, enabling smart factory transformations.

Building upon these features, the DC4 model introduces machine learning algorithms that predict maintenance needs, thereby minimizing downtime and maximizing productivity. This proactive approach to maintenance is essential in today’s fast-paced industrial landscape. The DC4 is ideally suited for logistics and supply chain applications, where every second counts, and operational efficiency is paramount.

The DC5 model features advanced cybersecurity measures to protect sensitive data against evolving threats. With end-to-end encryption and secure access protocols, users can be assured that their operations remain safe from cyberattacks. This is particularly vital for industries that handle critical infrastructure, where breaches could lead to catastrophic consequences.

Lastly, the DC6 model epitomizes versatility with its multi-functionality. It supports various applications, from environmental monitoring in smart buildings to advanced control systems in aerospace. Its ability to seamlessly adapt to different environments and use cases positions it as a go-to solution for enterprises aiming for digital transformation.

In summary, Honeywell’s DC series models—DC2, DC3, DC4, DC5, and DC6—each brings unique features and cutting-edge technologies. They offer powerful tools for enhancing operational efficiency, safety, and connectivity across a multitude of industries. Whether through compact design, enhanced connectivity, predictive maintenance capabilities, robust cybersecurity measures, or versatile applications, these models underscore Honeywell's commitment to driving innovation and excellence in industrial solutions.
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