What to do if Asco 4900 Load Bank Protection Device disconnect switch fuses are blown?
If the disconnect switch fuses are blown on your Asco Protection Device, it could be due to a couple of reasons. First, the fuses might be undersized, in which case you should replace them with appropriately sized fuses. Second, there might be a short circuit in the blower or control circuit. Inspect these circuits for shorts and repair them as necessary.
Details the proprietary nature of the document's content.
Mentions warranty details are on the last page.
Explains the meaning and importance of warning and caution statements.
Covers general safety, hazards, operator recommendations, and maintenance precautions.
Lists operator recommendations and maintenance/operation precautions.
Details emergency shutdown, fire safety, and installation code adherence.
Describes the load bank, its blowers, and monitoring systems.
Covers safety notes, unit construction, and general features.
Details operational warnings and the functions of control panels.
Covers inspection, critical warnings, and initial site considerations.
Details site requirements, clearances, and mounting advice.
Includes clearance diagrams, location notes, and airflow considerations.
Discusses airflow problems, enclosure heaters, and control panel wiring.
Details fan/blower motor and load connection procedures.
Covers grounding and the initial checkout process.
Lists detailed checkout steps and control wiring requirements.
Explains energizing control power and testing safety circuits.
Concludes checkout and provides contact info for installation support.
Directs to IHT guide and lists operational cautions.
Emphasizes blower importance and provides operational warnings.
Covers ESD risks and recommended safe handling procedures.
Discusses maintenance importance, safety, and daily checks.
Details three-month and annual maintenance procedures.
Covers component replacement and specific fuse handling advice.
Explains the parts list content and how to use reference designators.
Provides a detailed table of replaceable parts with P/N and quantity.
Covers servicing advice and troubleshooting power-on failures.
Addresses issues with blowers, indicators, and fan blades.
Troubleshoots load energization, contactor chattering, and rated load problems.
Lists causes and remedies for blown fuses.
Reinforces the proprietary nature of the document contents.
Outlines the general warranty and its two-year terms.
Details warranty conditions, exclusions, and limitations.
Shows load contactor schematics and manual control panel wiring.
Details control circuits, relays, and safety interlock schematics.
Illustrates Sigma controller inputs, outputs, and control panel interface.
Shows manual panel functions for blower and load control.
Displays schematics for various resistive load bank configurations.
Provides diagrams and material lists for resistor assemblies.
Introduces the IHT and its purpose for controlling load banks.
General safety advice for operating Froment load banks and equipment.
Describes the IHT's enclosure, keyboard, LCD screen, and control interface.
Explains how the IHT synchronizes load events and shares load.
Details connecting the IHT to load banks using Sigma data cables.
Explains load bank numbering and Sigma data cable testing.
Describes the function keys, quadrant keys, and LED status lamp.
Explains the LCD screen, context-sensitive help, and navigation.
Shows typical status messages and lists common errors and causes.
Introduces quick-start tests and outlines general assumptions for operation.
Guides on starting tests and setting supply parameters like kVA and PF.
Explains how to apply load, adjust values, and use load correction.
Describes the page for setting supply parameters like voltage and frequency.
Details load bank capacity and access to operation options.
Explains how to set voltage, frequency, and phase number.
Verifies IHT settings against the generator's rating plate.
Guides on adjusting kVA, PF, voltage, and frequency.
Explains the warning symbol for inadequate load bank capacity.
Guides on verifying connected load banks and clearing errors.
Settings for ramp down, cyclic tests, and total test time.
Settings for LCD contrast and language.
Settings for load correction, contactor delay, and stall protection.
Settings for load control and instrumentation resolution.
Settings for printer and Modbus communications.
Configures load behavior during reject, auto test repetition, and time display.
Adjusts screen contrast and selects the interface language.
Optimizes load application and protects the generator.
Sets resolution for load selection and instrumentation readings.
Configures serial port for printer output or Modbus communication.
Turns off printer and disables Modbus communications.
Guides on cycling through the four available test pages.
Displays real-time supply voltage and frequency for initial setup.
Shows RMS line-to-line voltages and currents for full load testing.
Displays RMS phase-to-neutral voltages and currents for testing.
Captures and displays voltage/frequency errors for transient response analysis.
Defines generator performance classes based on ISO8528 standards.
Explains the information provided in the status bar during tests.
Provides direct, real-time control of load bank operation.
Explains how the IHT performs closed-loop load correction.
Guides on adjusting load percentage, kVA, and power factor values.
How to set the load percentage using the IHT's keys.
How to adjust kVA and power factor values using the IHT.
How to apply load, calculate correction, and distribute it across banks.
Fine-tuning load values while a test is running.
Uses 'O' to reject load and start fan delay for equipment cooling.
Guides on creating and configuring pre-programmed load sequences.
Details how to specify load, power factor, and duration for each stage.
Addresses warnings when a load bank cannot meet specified settings.
Step-by-step instructions for programming test sequence stages.
Guides on starting, pausing, and resuming automatic test sequences.
Fine-tuning load values during an automatic test sequence.
Details the proprietary nature of the document's content.
Mentions warranty details are on the last page.
Explains the meaning and importance of warning and caution statements.
Covers general safety, hazards, operator recommendations, and maintenance precautions.
Lists operator recommendations and maintenance/operation precautions.
Details emergency shutdown, fire safety, and installation code adherence.
Describes the load bank, its blowers, and monitoring systems.
Covers safety notes, unit construction, and general features.
Details operational warnings and the functions of control panels.
Covers inspection, critical warnings, and initial site considerations.
Details site requirements, clearances, and mounting advice.
Includes clearance diagrams, location notes, and airflow considerations.
Discusses airflow problems, enclosure heaters, and control panel wiring.
Details fan/blower motor and load connection procedures.
Covers grounding and the initial checkout process.
Lists detailed checkout steps and control wiring requirements.
Explains energizing control power and testing safety circuits.
Concludes checkout and provides contact info for installation support.
Directs to IHT guide and lists operational cautions.
Emphasizes blower importance and provides operational warnings.
Covers ESD risks and recommended safe handling procedures.
Discusses maintenance importance, safety, and daily checks.
Details three-month and annual maintenance procedures.
Covers component replacement and specific fuse handling advice.
Explains the parts list content and how to use reference designators.
Provides a detailed table of replaceable parts with P/N and quantity.
Covers servicing advice and troubleshooting power-on failures.
Addresses issues with blowers, indicators, and fan blades.
Troubleshoots load energization, contactor chattering, and rated load problems.
Lists causes and remedies for blown fuses.
Reinforces the proprietary nature of the document contents.
Outlines the general warranty and its two-year terms.
Details warranty conditions, exclusions, and limitations.
Shows load contactor schematics and manual control panel wiring.
Details control circuits, relays, and safety interlock schematics.
Illustrates Sigma controller inputs, outputs, and control panel interface.
Shows manual panel functions for blower and load control.
Displays schematics for various resistive load bank configurations.
Provides diagrams and material lists for resistor assemblies.
Introduces the IHT and its purpose for controlling load banks.
General safety advice for operating Froment load banks and equipment.
Describes the IHT's enclosure, keyboard, LCD screen, and control interface.
Explains how the IHT synchronizes load events and shares load.
Details connecting the IHT to load banks using Sigma data cables.
Explains load bank numbering and Sigma data cable testing.
Describes the function keys, quadrant keys, and LED status lamp.
Explains the LCD screen, context-sensitive help, and navigation.
Shows typical status messages and lists common errors and causes.
Introduces quick-start tests and outlines general assumptions for operation.
Guides on starting tests and setting supply parameters like kVA and PF.
Explains how to apply load, adjust values, and use load correction.
Describes the page for setting supply parameters like voltage and frequency.
Details load bank capacity and access to operation options.
Explains how to set voltage, frequency, and phase number.
Verifies IHT settings against the generator's rating plate.
Guides on adjusting kVA, PF, voltage, and frequency.
Explains the warning symbol for inadequate load bank capacity.
Guides on verifying connected load banks and clearing errors.
Settings for ramp down, cyclic tests, and total test time.
Settings for LCD contrast and language.
Settings for load correction, contactor delay, and stall protection.
Settings for load control and instrumentation resolution.
Settings for printer and Modbus communications.
Configures load behavior during reject, auto test repetition, and time display.
Adjusts screen contrast and selects the interface language.
Optimizes load application and protects the generator.
Sets resolution for load selection and instrumentation readings.
Configures serial port for printer output or Modbus communication.
Turns off printer and disables Modbus communications.
Guides on cycling through the four available test pages.
Displays real-time supply voltage and frequency for initial setup.
Shows RMS line-to-line voltages and currents for full load testing.
Displays RMS phase-to-neutral voltages and currents for testing.
Captures and displays voltage/frequency errors for transient response analysis.
Defines generator performance classes based on ISO8528 standards.
Explains the information provided in the status bar during tests.
Provides direct, real-time control of load bank operation.
Explains how the IHT performs closed-loop load correction.
Guides on adjusting load percentage, kVA, and power factor values.
How to set the load percentage using the IHT's keys.
How to adjust kVA and power factor values using the IHT.
How to apply load, calculate correction, and distribute it across banks.
Fine-tuning load values while a test is running.
Uses 'O' to reject load and start fan delay for equipment cooling.
Guides on creating and configuring pre-programmed load sequences.
Details how to specify load, power factor, and duration for each stage.
Addresses warnings when a load bank cannot meet specified settings.
Step-by-step instructions for programming test sequence stages.
Guides on starting, pausing, and resuming automatic test sequences.
Fine-tuning load values during an automatic test sequence.
General| Brand | Asco |
|---|---|
| Model | 4900 Load Bank |
| Category | Protection Device |
| Language | English |
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