Troubleshoot Library

Verified troubleshooting guides for industrial equipment

Step-by-step procedures for alarm codes, fault diagnoses, and routine fixes, cross-checked against OEM operator manuals, maintained by Dovient's reliability team.

41 categories157 machines573 guides

Browse by category

CNC Mills

Vertical and horizontal CNC milling machines: troubleshooting guides, alarm references, and procedures for common makes and models.

3 machines · 12 guides

VFDs & Drives

Variable frequency drives and servo drives that control motors on industrial machinery, fault codes, parameter errors, and replacement procedures.

1 machine · 7 guides

Rotating Equipment

Electric motors and rotating machinery that drive every pump, fan, conveyor, and machine tool in a plant. Found in 99% of manufacturing facilities.

1 machine · 7 guides

Fluid Handling

Pumps, compressors, and related equipment that move water, chemicals, lubricants, and process fluids through a plant.

2 machines · 15 guides

Material Handling

Conveyors, cranes, hoists, and forklifts, the equipment that moves parts and product through a plant. Found in 85% of manufacturing facilities.

3 machines · 20 guides

Facility Systems

HVAC units, chillers, and cooling towers that maintain comfort, process cooling, and clean rooms in industrial facilities.

3 machines · 20 guides

Power Transmission

Hydraulic systems, gearboxes, and speed reducers that transmit motor power to driven loads. The link between source power and the work the machine does.

2 machines · 16 guides

Power Distribution

Electrical panels, transformers, switchgear, and diesel generators, the equipment that delivers and conditions electric power throughout a plant.

4 machines · 26 guides

Steam & Heat

Boilers, steam traps, and heat utility equipment that produce and distribute process steam and hot water.

2 machines · 12 guides

Power & Control

PLCs and control systems that automate the flow of work in a plant. The brain behind the iron.

1 machine · 6 guides

Air Movement

Industrial fans and blowers used for ventilation, combustion air, drying, and process cooling.

1 machine · 6 guides

Process Equipment

Heat exchangers, mixers, agitators, and the workhorse equipment that performs the core processes of chemical, food, and pharmaceutical plants.

2 machines · 10 guides

Thermal Processing

Industrial furnaces, ovens, and kilns used for heat treatment, drying, curing, and firing in metals, ceramics, glass, and food production.

1 machine · 6 guides

Process Control

Control valves and final control elements that regulate flow, pressure, and temperature in a process plant.

1 machine · 6 guides

Fabrication

Welding equipment and fabrication tools used to join, cut, and form metal in production environments.

1 machine · 6 guides

Forming

Hydraulic and mechanical presses used to stamp, punch, draw, and form metal parts.

1 machine · 6 guides

Plastics Production

Injection molding machines and related plastics processing equipment.

1 machine · 6 guides

Air Quality

Dust collectors, baghouses, and air filtration equipment that keep plant air clean and meet environmental requirements.

1 machine · 5 guides

Automation

Industrial robots and automated work cells that handle assembly, welding, palletizing, and material handling.

1 machine · 6 guides

Pharma & Chemical Process

Pharmaceutical, fine chemical, and continuous-process equipment, autoclaves, reactors, centrifuges, lyophilizers, and the supporting utilities that keep cGMP plants running.

10 machines · 30 guides

Food & Beverage

Production equipment for dairy, bakery, brewing, beverage filling, and food processing, fillers, pasteurizers, retorts, freezers, and packaging lines.

7 machines · 21 guides

Oil & Gas

Upstream and midstream production gear, wellhead controllers, separators, compressors, pumps, and the safety systems oil and gas operators rely on.

7 machines · 21 guides

Metal Fabrication & Sheet Metal

Sheet metal and fabrication equipment, laser cutters, press brakes, turret punches, plasma cutters, and shears used in job shops and OEM fab departments.

6 machines · 18 guides

Plastics, Rubber & Polymer

Plastic and rubber processing equipment beyond injection molding, extruders, blow molders, thermoformers, and compounding lines.

6 machines · 18 guides

Semiconductor & Electronics

Wafer fab and electronics assembly equipment, lithography tools, etchers, CVD/PVD chambers, vacuum systems, SMT lines, and reflow ovens.

6 machines · 18 guides

Mining & Minerals

Hard-rock and mineral processing equipment, grinding mills, crushers, screens, conveyors, and the heavy-duty gear that defines mining throughput.

6 machines · 18 guides

Cement, Lime & Aggregates

Cement and aggregate production equipment, kilns, raw mills, finish mills, preheaters, and material handling systems.

6 machines · 18 guides

Steel, Metals & Foundry

Steel and foundry equipment, electric arc furnaces, ladle refining, continuous casters, rolling mills, and induction furnaces.

6 machines · 18 guides

Pulp & Paper

Pulp and paper mill equipment, digesters, bleach lines, paper machines, winders, and supercalenders.

6 machines · 18 guides

Glass & Ceramics

Glass and ceramic production equipment, melting furnaces, IS forming machines, lehrs, and tile presses.

6 machines · 18 guides

Wood, Lumber & Furniture

Sawmill, lumber processing, and furniture-making equipment, saws, planers, sanders, edgebanders, and wood CNC routers.

6 machines · 18 guides

Power Generation

Utility and industrial power generation gear, gas turbines, steam turbines, generators, switchgear, and balance-of-plant equipment.

6 machines · 18 guides

Aerospace & Defense

Aerospace and defense manufacturing equipment, 5-axis machining centers, autoclaves, composite layup, NDT systems, and precision grinding.

6 machines · 18 guides

Printing, Packaging & Corrugated

Printing and packaging equipment, web offset, flexo, gravure, digital presses, corrugators, die cutters, and folder-gluers.

6 machines · 18 guides

Agriculture, Grain & Feed

Grain handling and feed mill equipment, hammer mills, pellet mills, dryers, elevators, and bulk material handling.

6 machines · 18 guides

Automotive & Auto Parts

Automotive assembly and parts manufacturing equipment, body welding cells, paint booths, transfer presses, and engine plant gear.

5 machines · 15 guides

Textiles & Apparel

Textile and apparel production equipment, knitting machines, weaving looms, dyeing, finishing, and nonwovens lines.

5 machines · 15 guides

Medical Device

Medical device manufacturing equipment, cleanroom assembly, sterilizers, micro-molders, and laser welders for medical-grade production.

5 machines · 15 guides

Utilities & Water Treatment

Municipal and industrial water treatment equipment, filtration, disinfection, blowers, and the pumps that move drinking and process water.

3 machines · 9 guides

Material Handling & Industry 4.0

Modern warehouse and Industry 4.0 equipment, AS/RS, AGVs, AMRs, sortation systems, and connected logistics gear.

3 machines · 9 guides

Facility & HVAC

Large facility HVAC and building services equipment, central plants, boilers, chillers, and the building automation that ties them together.

2 machines · 6 guides

Popular guides

How to diagnose ammonia injection malfunction on a Babcock and Wilcox B&W SCR

Zero or erratic AIG flow almost always means a stuck control valve, plugged nozzle, or cold vaporizer. Verify vaporizer temperature, check valve positioner output, and inspect the injection grid nozzles.

~90 min7 steps

How to diagnose catalyst deactivation and declining NOx efficiency on a Babcock and Wilcox B&W SCR

Gradual NOx efficiency loss that requires increasing ammonia to compensate is a sign of catalyst deactivation. Pull a catalyst sample for activity testing and check for arsenic or alkali poisoning.

~120 min7 steps

How to diagnose high stator winding temperature on a GE Gen6 / Gen8 generator

Elevated stator winding temperature with normal load usually means reduced cooling water flow or a blocked cooling passage. Check cooling water flow rate, inlet temperature, and compare RTD readings across all stator slots.

~60 min7 steps

How to clear Mazatrol Alarm 4 (Emergency Stop) on a Mazak VTC-200

Find which E-stop button is depressed (operator panel, side door, or remote), reset it, then clear the alarm from the Mazatrol screen.

~5 min4 steps

How to diagnose bearing noise and vibration on a Baldor Super-E motor

Vibration is most often a worn bearing. Listen for grinding, log a vibration reading, and plan a bearing replacement during the next planned outage.

~30 min7 steps

How to fix overheating and excessive current draw on a Baldor Super-E motor

Overheating with high current is usually mechanical overload or supply phase imbalance. Measure phase currents, check the load, and verify supply voltage balance is within 1%.

~30 min7 steps

How to detect and respond to a hydrogen gas leak on a GE Gen6 / Gen8 generator

Declining hydrogen purity or elevated makeup demand signals a leak. Check the shaft seal oil system first since shaft seals are the most common hydrogen leak path on large generators.

~120 min7 steps

How to clear catalyst plugging and high backpressure on a Babcock and Wilcox B&W SCR

Rising backpressure on an SCR catalyst bed is almost always ash or soot accumulation. Trigger soot-blowing, inspect inlet baffles, and schedule a catalyst wash if the differential pressure stays high.

~60 min7 steps