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LF Bros E Series User Manual

LF Bros E Series
28 pages
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LF Bros Air Heater
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LF Bros E Series Specifications

General IconGeneral
BrandLF Bros
ModelE Series
CategoryHeater
LanguageEnglish

Summary

Packing List

Overview

Technical Parameters

Structure

Main Heater Body

Describes the main structure of the heater as depicted in Fig. 2.

Case

Explains the case structure, fan motor, air inlet, and hot air outlet.

Controller (Circuit Board)

Details the controller's mounting, function, and monitoring of heater procedures.

Control of Working Procedures

Explains adjustment and control during the heater's operating cycle.

Fault Lock

Lists conditions for automatic shutdown and protection, and how to cancel it.

Circuit Interfaces

Identifies circuit interfaces on the controller outer case, referencing Fig. 4.

Sensors and Safety Protection

Details the functions of flame, overheating, and temperature sensors for safety.

Flame Sensor (Glow Plug)

Explains the dual function of the glow plug as a flame sensor for ignition and continuous burning.

Overheating Sensor

Describes the overheating sensor's role in preventing damage by cutting fuel supply.

Temperature Sensor

Explains how the temperature sensor measures air inlet temperature to adjust output.

Power Supply

Explains the heater's power supply from the car and fuse protection.

Fuel Supply

Details the fuel source and delivery mechanism for the heater.

Installation

Requirements for Installation

Lists mandatory requirements and places of application for heater installation.

Installation of the Main Equipment

Covers location and spacing requirements for installing the main heater unit.

Where to Install

Discusses installing the heater inside or outside the vehicle and protection from elements.

Spacing Requirements

Details necessary clearance for air flow, installation, and maintenance, referencing Fig. 6.

Sealing

Emphasizes proper sealing between the heater and installation surface using a gasket.

Mounting Plate

Addresses the need for a mounting plate for thin panels and sealing between plate and body.

Installation Direction

Specifies the correct installation direction and tilt angle for the heater to ensure normal operation.

Check of Fan Wheel

Advises checking the fan wheel for contact or friction with surrounding components post-installation.

Installation of Air Heating System

Covers air circulation modes, temperature resistance, and pressure drop for the heating system.

Air Circulation Modes

Recommends independent outer or inner circulation modes for the heating system.

Temperature Resistance

Specifies material requirements for external heating air pipes to withstand 150 °C.

Maximum Pressure Drop

Sets the maximum allowable pressure drop for the air heating system at 0.3 kPa.

Safety of Vents

Warns about hot air eruption and potential vent blockage by passengers.

Cold Air In

Advises drawing inlet air from cold areas to avoid re-entering hot air in internal circulation.

Installation of Fuel Supply System

Guides the installation of the fuel tank, filter, connecting pipe, and fuel pump.

Fuel Pump

Details securing the fuel pump with rubber clamps and the required upward tilt angle.

Elevation Differences

Explains how elevation differences affect fuel pressure and provides dimensional requirements.

Installation of Fuel Filter

Instructs on installing the fuel filter correctly at 90° before the fuel pump inlet.

Installation of Electrical Components

Covers wiring harness, battery, fuel pump, and control panel connections.

Main Wire Harness

Details routing, fixing, and protecting the main wire harness with corrugated pipe.

Battery Connection

Instructs on connecting the red wire to the battery's positive terminal and black to negative.

Fuel Pump Connection

Simple instruction to connect the fuel pump leads.

Control Panel

Guides placement and connection of the control panel for easy operation.

Avoid Short-circuit

Advises wrapping wire ends with insulating tape to prevent short circuits.

Installation of Pipes

Focuses on installing air inlet and exhaust pipes, ensuring separate circuits.

Separate Air Circuits

Explains the need for fresh air intake and exhaust discharge, preventing fumes re-entry.

Installing the Pipes

Details using provided aluminum/stainless steel pipes and clamps, keeping protective hoods intact.

Direction of Pipes

Guides pipe direction, condensate discharge, bending radius, and angle limits, referencing Fig. 16.

Protect from Dirt

Advises arranging pipes to prevent openings from blocking by dirt, snow, or slurry, referencing Fig. 17.

High Temperature

Warns about exhaust pipe heat and installation distance from flammable parts, referencing Fig. 18.

Protective Cover

Recommends a protective cover for exhaust pipe sections inside the vehicle to prevent burns.

Precautions

Air in the Fuel

Details removing air from the fuel line using the fuel pumping mode after installation.

Check Before Using

Advises commissioning the heater, checking for leaks, smoke, or noise, and turning off if issues arise.

Inspect Before Each Season

Outlines seasonal inspection points including contamination, connections, and pipe integrity.

Keep It Alive

Recommends running the heater every four weeks if not in use to prevent mechanical part malfunction.

Keep the Pipes Clean

Stresses keeping air inlet and outlet ports clean and unblocked for smooth airflow and to prevent overheating.

Refueling

Instructs on operating the heater for 15 minutes after refueling to fill the lines, and turning off before refueling.

Life Time

Specifies a 5-year replacement period for the heat exchanger and exhaust pipe, and sensor replacement.

Welding the Vehicle

Advises detaching the positive power wire from the battery when welding the vehicle to protect the controller.

Transportation and Storage

Sets ambient temperature limits for transportation and storage to prevent electronic component damage.

Installation and Repair

States that only authorized stations can install/repair, and prohibits non-original parts.

Responsibility for Damage

Clarifies manufacturer's non-responsibility for damage due to unauthorized opening or non-compliant installation/operation.

Usage

Modes of Operation

Illustrates and describes various operational modes like startup, shutdown, and fixed settings.

Fuel Pumping (First Start or After Refueling)

Explains the fuel pumping mode for removing air locks or filling lines after refueling.

Normal Startup

Details the sequence of events during a normal heater startup, including glow plug and fuel pump operation.

Fixed Power Mode

Describes running the heater at a constant, selectable power output regardless of temperature.

Fixed Temperature Mode (Thermostat)

Explains how the heater adjusts power to maintain a set ambient temperature.

Shutdown

Details the shutdown process where the pump stops, but the fan continues cooling.

Unclean Shutdown

Addresses residual fuel after power interruption during operation.

Cleaning Residuals (Ventilation Mode)

Describes the process of blowing out residual fuel after an unclean shutdown.

Control Panel Usage

Introduces control methods using mechanical, LCD with buttons, and LCD with knob panels.

Mechanical Control Panel

Explains the components and operation of the mechanical control panel, including modes.

Fixed Power Mode (Mechanical)

Details setting a fixed power output using the mechanical control panel's knob and button.

Fixed Temperature Mode (Mechanical)

Explains setting a desired temperature using the mechanical control panel's knob and button.

Shutdown (Mechanical)

Describes shutting down the heater using the mechanical control panel's knob.

Start After Unclean Shutdown (Mechanical)

Provides steps to start the heater after an unclean shutdown using the mechanical control panel.

LCD Control Panel with Buttons

Introduces the LCD control panel featuring buttons for operation and display.

Fuel Pumping Mode (LCD Buttons)

Guides initiating fuel pumping mode using the LCD control panel with buttons.

Startup (LCD Buttons)

Details the startup sequence for the LCD control panel with buttons, including voltage display.

Fixed Power Mode (LCD Buttons)

Explains setting a fixed power output using the LCD control panel with buttons.

Fixed Temperature Mode (LCD Buttons)

Guides setting a desired temperature with the LCD control panel with buttons.

Shutdown (LCD Buttons)

Describes the shutdown procedure using the LCD control panel with buttons.

Start After Unclean Shutdown (LCD Buttons)

Details starting the heater in ventilation mode after an unclean shutdown using the LCD panel.

LCD Control Panel with Knob

Introduces the LCD control panel featuring a knob for operation and display.

Fuel Pumping Mode (LCD Knob)

Guides initiating fuel pumping mode using the LCD control panel with knob.

Startup (LCD Knob)

Details the startup sequence for the LCD control panel with knob, including voltage display.

Fixed Power Mode (LCD Knob)

Explains setting a fixed power output using the LCD control panel with knob.

Fixed Temperature Mode (LCD Knob)

Guides setting a desired temperature with the LCD control panel with knob.

Shutdown (LCD Knob)

Describes the shutdown procedure using the LCD control panel with knob.

Troubleshooting

Solutions to Common Problems

Provides general advice for restarting the heater and preventing circuit malfunctions.

Common Problems Indicated at the Display

Lists display indicators for common issues like disconnected wiring or power failures.

Control Panel Wires Disconnected

Explains display messages indicating disconnected wiring harnesses and their specific wire colors.

Electric Power Failure

Describes how power failures are treated during startup vs. operation, and restart procedures.

Abnormal Shutdown

Explains display messages like LOST/LOS indicating an unclean shutdown and waiting for processing.

Error Codes

Mentions that the device detects faults and displays error codes like E07, referencing Figs. 43/44.

Table of Error Codes

Lists error codes, fault descriptions, and possible causes/solutions for troubleshooting.

Maintenance Record

Record for Repairs and Maintenance

Provides a table for logging maintenance dates and causes.

Important Notes

Includes warranty, qualification, usage inquiry, and station contact information.