MULTIQUIP WHISPERWATT DCA25USI4CAN

Questions and Answers

N
Nichole Moore DDSAug 7, 2025
What to do if the circuit breaker tripped on my MULTIQUIP Portable Generator?
- K
  khawkinsAug 7, 2025
  If your MULTIQUIP Portable Generator's circuit breaker tripped, it might be due to a short circuit in the load. Check the load and repair if necessary. Also, it could be due to overcurrent; confirm the load requirements and reduce them. The circuit breaker itself could be defective, so check and replace it if needed. Finally, the overcurrent relay might have been activated; confirm the load requirement and replace the relay.
J
Jessica McclureAug 14, 2025
How to troubleshoot no voltage output on MULTIQUIP Portable Generator?
- H
  herringjoshuaAug 14, 2025
  If your MULTIQUIP Portable Generator is showing no voltage output, begin by checking the output voltage using a voltmeter to ensure the AC voltmeter isn't defective. Inspect the wiring for any loose connections and repair them. If these steps don't resolve the issue, the AVR may be defective and require replacement. Also, check the rotating rectifier and replace if defective. Finally, check the exciter field for approximately 17.3 ohms across J & K on CN1.
M
Mike CrawfordAug 22, 2025
Why is the voltage output low on my MULTIQUIP Portable Generator?
- K
  Kristy McleanAug 22, 2025
  If your MULTIQUIP Portable Generator has a low voltage output, first ensure the engine speed is correct by turning the engine throttle lever to “High”. Check the wiring for loose connections and repair them. If the issue persists, the AVR may be defective and require replacement.
D
Deborah PayneAug 29, 2025
What causes high voltage output in MULTIQUIP Portable Generator?
- M
  Mr. Alexander SantosAug 29, 2025
  If your MULTIQUIP Portable Generator has a high voltage output, check the wiring for loose connections and repair them. If the issue continues, the AVR may be defective and require replacement.

Summary

OPERATION AND PARTS MANUAL

Fuel and Chemical Exposure Warnings

Reporting Safety Defects

Parts Ordering Procedures

Ordering Parts Options

Details methods for ordering parts: Internet, Fax, Phone, and customer types.

Safety Information

Safety Messages and Symbols

Explains safety messages (DANGER, WARNING, CAUTION, NOTICE) and hazard symbols.

General and Generator Safety

Covers general operating safety and specific precautions for generator use.

Engine Safety

Focuses on safety precautions related to the engine, exhaust, and moving parts.

Fuel and Towing Safety

Crucial safety guidelines for handling fuel and towing the generator.

Electrical, Battery, and Grounding Safety

Covers electrical hazards, battery safety, and proper grounding procedures.

Emissions and Environmental Safety

Discusses engine emissions, compliance, and safe decommissioning/disposal.

Specifications

Generator and Engine Specifications

Lists detailed specifications for both the generator and its ISUZU diesel engine.

Dimensions

Generator Physical Dimensions

Provides a diagram and table detailing the generator's physical size and measurements.

Installation

Generator Grounding Application

Illustrates the proper grounding method for the generator using a ground rod.

Installation Site and Mounting

Guidelines for selecting installation sites (indoor/outdoor) and proper mounting procedures.

Generator Grounding Requirements

Details NEC guidelines for proper generator grounding.

General Information

Excitation System, Engine, and Governor

Explains the Open Delta excitation system, ISUZU engine, and electric governor.

Extension Cables

Advice on selecting appropriate extension cables considering voltage drop.

Major Components

Generator Assembly Components

An exploded view and list identifying the main parts of the generator.

Generator Control Panel

Control Panel Functions and Components

Details the controls, gauges, and internal components of the generator control panel.

Engine Operating Panel

Engine Operating Panel Controls and Gauges

Explains the gauges, lamps, and switches on the engine operating panel.

Output Terminal Panel Familiarization

Output Terminal Panel Layout and Components

Identifies receptacles, breakers, and terminal lugs on the output panel.

GFCI and Twist-Lock Receptacles

Details the 120V GFCI and 120/240V twist-lock receptacles and their operation.

Accessing Terminal Lugs

Instructions for removing the face plate to access the output terminal lugs.

Connecting Loads and Over Current Relay

Guidance on connecting loads and understanding the over current relay function.

Load Application

Single and Three Phase Load Connection

Guidelines for applying single-phase and three-phase loads to the generator.

Power Factor and Cable Selection

Information on power factors for various loads and selecting appropriate cables.

Generator Outputs

Output Voltages and Amperage

Details on available output voltages, amperage limits, and GFCI load capacity.

Voltage Selector Switch Operation

How to use the voltage selector switch to choose output voltages.

Generator Outputs;Gauge Reading

Reading AC Ammeter and Voltmeter

Guides for correctly reading the AC ammeter and voltmeter via change-over switches.

Output Terminal Panel Connections

UVWO Terminal Output Voltages

Instructions for connecting loads to UVWO terminals for different voltage configurations.

UVWO Terminal Connection Configurations

Specific connection steps for 3Ø 480/277V and 1Ø 240/120V outputs.

600 VAC Auto Transformer Connections

3Ø-600 V Auto-Transformer Operation

How to use the auto-transformer for 600 VAC output and load connections.

Inspection;Setup

Pre-Start Checks: Oil and Fuel

Essential checks for lubrication oil and fuel system before operation.

Refilling the Fuel System

Safe procedures for refilling the generator's internal fuel tank.

Refueling Procedure and Fuel Expansion

Safety guidelines for refueling, including level tanks and fuel expansion considerations.

Coolant, Radiator, and Air Cleaner Maintenance

Procedures for checking coolant, cleaning the radiator, and maintaining the air cleaner.

Fan Belt Tension

How to check and adjust fan belt tension.

Battery and Alternator Checks

Battery maintenance, cable installation, and alternator notes.

Wiring and Hose Connections Inspection

Instructions for inspecting wiring and hose connections for wear and damage.

Generator Start-Up Procedure

Pre-Start Checks and Engine Preheat

Steps before starting, including breaker settings, load connection, and engine preheat.

Starting the Engine

Procedure for starting the generator engine, including releasing the ignition key.

Monitoring Generator Output Gauges

How to interpret readings from voltmeters, ammeters, oil pressure, and temperature gauges.

Voltage Adjustment and Ammeter Reading

Using the voltage control knob and reading the ammeter under load.

Engine Speed and Breaker Status

Monitoring engine speed via tachometer and checking breaker status.

Critical Shutdown Warning

A vital warning about not stopping the engine suddenly except in emergencies.

Generator Shut-Down Procedures

Normal and Emergency Shutdown

Procedures for both normal and emergency shutdown of the generator.

Maintenance

Inspection and Maintenance Schedule

A table detailing inspection and maintenance tasks based on operating hours.

Air Cleaner Maintenance

Procedures for cleaning and replacing the air cleaner element, including dust indicator use.

Fuel Tank Inspection and Filter Replacement

Procedures for inspecting the fuel tank, removing water, and replacing the fuel filter.

Fuel System Air Removal

Steps for bleeding air from the fuel system if it runs out or is disassembled.

Oil Filter and Coolant Procedures

Instructions for replacing the oil filter and flushing/refilling the radiator with coolant.

Radiator Cleaning and Generator Storage

Methods for cleaning the radiator and recommendations for long-term generator storage.

Trailer Maintenance

Brake System Inspection and Adjustment

Covers trailer brake inspection, hydraulic brake system checks, and manual brake adjustment.

Hydraulic Brake Actuator Checks

Focuses on checking the hydraulic brake actuator and its fluid reservoir.

Hydraulic Brake Troubleshooting and Wheel Bearings

Addresses common hydraulic brake issues and the importance of wheel bearing maintenance.

Adjustable Channel and Wheel Bearings

Information on the adjustable channel and wheel bearing inspection/lubrication.

Wheel Hub Adjustment and Leaf Suspension

Procedures for wheel hub adjustment and inspection of leaf suspension components.

Suspension Torque and Tire Maintenance

Suspension component torque specs, tire wear, inflation, and lug nut torque requirements.

Trailer Wiring Diagram

Trailer and Towing Vehicle Wiring

Illustrates the electrical wiring connections between the trailer and the towing vehicle.

Generator Wiring Diagram

Generator Wiring Schematics and Keys

Detailed generator wiring diagram, connector arrangements, color codes, and symbol keys.

600 VAC Auto Transformer Wiring Diagram

600 VAC Auto Transformer Wiring

Wiring diagram for the optional 600 VAC auto transformer, showing connections.

Engine Wiring Diagram

Engine Wiring Schematics and Keys

Detailed engine wiring diagram with color codes and connection key.

Troubleshooting (Generator)

Generator Troubleshooting Guide

Lists common generator problems, their possible causes, and solutions for diagnosis.

Suggested Spare Parts

Recommended Spare Parts List

A list of recommended spare parts with quantities and part numbers.

Generator Assy.

Generator Assembly Diagram

Exploded view of the generator assembly showing all components.

Generator Assembly Parts List

A detailed list of all parts for the generator assembly.

Control Box Assy.

Control Box Assembly Diagram

Exploded view of the control box assembly showing all components.

Control Box Assembly Parts List

A detailed list of all parts for the control box assembly.

Control Box Assy. (Continued)

Control Box Assembly Parts List Continued

Continues the list of parts for the control box assembly.

Engine and Radiator Assy.

Engine and Radiator Assembly Diagram

Exploded view of the engine and radiator assembly showing all components.

Engine and Radiator Assembly Parts List

A detailed list of all parts for the engine and radiator assembly.

Engine and Radiator Assy. (Continued)

Engine and Radiator Assembly Parts List Continued

Continues the list of parts for the engine and radiator assembly.

Output Terminal Assy.

Output Terminal Assembly Diagram

Exploded view of the output terminal assembly showing all components.

Output Terminal Assembly Parts List

A detailed list of all parts for the output terminal assembly.

Battery Assy.

Battery Assembly Diagram

Exploded view of the battery assembly showing all components.

Battery Assembly Parts List

A detailed list of all parts for the battery assembly.

Muffler Assy.

Muffler Assembly Diagram

Exploded view of the muffler assembly showing all components.

Muffler Assembly Parts List

A detailed list of all parts for the muffler assembly.

Fuel Tank Assy.

Fuel Tank Assembly Diagram

Exploded view of the fuel tank assembly showing all components.

Fuel Tank Assembly Parts List

A detailed list of all parts for the fuel tank assembly.

Enclosure Assy.

Enclosure Assembly Diagram

Exploded view of the enclosure assembly showing all components.

Enclosure Assembly Parts List

A detailed list of all parts for the enclosure assembly.

Enclosure Assy. (Continued)

Enclosure Assembly Parts List Continued

Continues the list of parts for the enclosure assembly.

Rubber Seals Assy.

Rubber Seals Assembly Diagram

Exploded view of the rubber seals assembly showing all components.

Rubber Seals Assembly Parts List

A detailed list of all parts for the rubber seals assembly.

Nameplate and Decals Assy.

Nameplate and Decals Assembly Diagram

Illustrates the placement of nameplates and decals on the generator unit.

Nameplate and Decals Parts List

Lists all nameplates and decals with their corresponding part numbers.

Nameplate and Decals Assy. (Continued)

Nameplate and Decals Parts List Continued

Continues the list of parts for nameplates and decals.

3Ø 600 VAC Transformer Assy. (Option)

3Ø 600 VAC Transformer Assembly Diagram

Exploded view of the optional 3Ø 600 VAC transformer assembly.

3Ø 600 VAC Transformer Assembly Parts List

A detailed list of all parts for the optional 3Ø 600 VAC transformer assembly.

Terms and Conditions of Sale - Parts

Payment, Freight, and Minimum Order

Outlines payment terms, freight policy, and minimum order requirements.

Returned Goods Policy

Details the procedures and conditions for returning parts for credit.

Pricing, Rebates, and Liability Limitations

Covers pricing changes, rebates, seller's liability, and warranty limitations.

How to Get Help

Multiquip Support Contact Information

Provides contact details for corporate, service, technical assistance, parts, and warranty departments.