This document is a service manual for the Circle Fitness M7 LED Treadmill, providing comprehensive information for qualified service technicians.
Function Description:
The Circle Fitness M7 LED Treadmill is a fitness appliance designed for walking, jogging, and running exercises. It features an LED display console that provides various workout metrics and allows users to control the treadmill's speed and incline. The treadmill incorporates an inverter for motor control, a console PCB for user interface and system management, and a safety key for emergency stops. Hand pulse grips are integrated for heart rate monitoring, and quick shift buttons are available for both speed and incline adjustments. The device is designed to offer a range of workout programs, including target, rolling, valley, random, fat burn, fitness test, ramp, and H.R.C. (Heart Rate Control).
Important Technical Specifications:
- Model: M7 LED Treadmill
- Display Type: LED
- Inverter Output Current Overload Threshold: 17.6A
- Input AC Power Source Voltage: 110V / 220V ± 10% (for normal operation), with specific thresholds for "LE" error (under 110V for 220V system, under 65V for 110V system).
- Incline Motor Position Parameter: Max/Min limits, with an "Err7" error indicating an issue.
- Incline Motor Set Position Time Out: 42 seconds (triggers "Err6" error).
- Communication Protocol: RS485 (DX+/DX-) and RS232 (TXD/RXD) for console communication (J7).
- PWM Output: 0~12V for fan control (Jk1).
- Drive Belt Tension Value: 240 Hz (for new drive belt installation), 206~216Hz (500~550N) for adjustment rod 2.
- Running Belt Tensioning Torque: M6 torque wrench (45 kgf-cm).
- Running Belt/Deck Specifications (M7):
- F570023-005 Habasit 256, 550x3340x2.4t no wax (Running belt)
- F580018-000 M7A00/710136525.4t (D&P no-wax deck)
- F570060-002 Siegling 7131, 55033401.6t prewax (Running belt)
- F580027-000 M7A00/710136525.4t (D&P prewaxed deck)
- Motor Current (Output Current) for User Weight < 100kg and < 8km/h:
- New Machine: 5↓
- Slight wear: 6↓
- Moderate wear: 7.5↓
- Need exchange: 7.5↑
- Incline Motor Frame Gap: 3mm to 5mm between mainframe and cushion.
Usage Features:
The treadmill offers a user-friendly interface with a console that displays distance, time, calories, incline, heart rate, and speed. It includes quick shift buttons for speed (SPD+, SPD-, Spd 4, Spd 6, Spd 8, Spd 10) and incline (INC+, INC-, Inc 2, Inc 4, Inc 6, Inc 8, Inc Up, Inc Down). The console also features dedicated buttons for Target, Strength, Rolling, Interval, Valley, Random, Fat Burn, Fitness Test, Ramp, H.R.C., Reset/Clear, Enter, Cool Down, Fan, Stop, and Start. An emergency stop button is present for immediate cessation of operation. The external control Key Pad (KP-208) allows for monitoring and operation of the inverter, including output frequency, frequency setting, output voltage, PN voltage, output current, and incline setting.
Maintenance Features:
The service manual details various maintenance procedures and troubleshooting steps.
- Error Signal Check and Solutions: A comprehensive list of error messages (LE1, OC, OE, PrEr, EEr, LE, 9F, OH, OL, OL1, ntcF, LF, dbuP, Err7, Err6, ESP, UArt, Err1) with their causes and recommended solutions, including checking power sources, replacing components (inverter, running belt, deck, motor), and updating firmware.
- Engineering Mode: Two engineering modes are available:
- Test Mode: Allows technicians to test all display segments, LED pilot lamps, and individual keys, with each key having a specific code. It also enables motor and incline motor testing.
- Factory Settings Mode: Provides access to software version display, language settings (English, Nederlands, Francais, Deutsch, Italiano, Espanol), unit settings (Metric, English), fan settings (ON/OFF), and adjustment of minimum speed, maximum speed, and maximum elevation. It also allows viewing and erasing total used distance and total used hours.
- Part Replacement Guide: Detailed instructions for replacing various components:
- Console Panel
- Membrane and Overlay
- Side Rails
- Running Belt
- Drive Belt
- Drive Motor
- Inverter
- Emergency Stop
- Hand Pulse Set
- Incline Motor
These instructions include step-by-step procedures with visual aids, specifying tools required (e.g., M5, M6, M8, M14, M17 wrenches, Philips screwdriver, Allen wrench).
- General Maintenance: Recommendations for locating the treadmill in a cool, dry place, keeping the display console clean, avoiding long fingernails on buttons, using a 100% cotton cloth with mild cleaner, and brushing away wax deposits. Ammonia or acid-based cleaners are explicitly prohibited.
- Running Belt and Running Deck Lubrication: A schedule for lubrication based on usage (Light, Medium, Heavy user) and instructions on how to spray silicone evenly on the deck, emphasizing the importance of stopping the belt completely before application and avoiding excessive silicone.
- Preventive Maintenance Schedule: A table outlining daily, weekly, monthly, seasonal, and 6-month inspection and maintenance tasks for various parts, including console screws, frame, running surface, power cord, overlay, handlebar, handlebar screws, rollers, safety key, drive belt, running belt tension, motor control, and motor pulley & groove.
- Running Belt/Deck Maintenance Schedule: Specific lubrication intervals (e.g., 15ml every 3, 6, 9, 12, 15 months for M7) and a note on motor current as an indicator of running belt/deck wear, with recommended current values for different wear stages.
- Troubleshooting: A table addressing common issues like console display not illuminating or displaying incompletely, providing causes and solutions such as checking power, console wiring, fuse, and replacing console PCB or power source.
The manual emphasizes that only qualified service technicians should service the treadmill and that no service should be undertaken without thoroughly reading the manual. It also provides contact information for technical support.
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