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**Elevator Maintenance and Safety Technical Operation Procedures**
**EC-2100 Elevator Speedometer**
In order to comply with the "Safety Technical Operation Regulations for Construction and Installation Engineering" issued by the State Council, as well as the "Decision on Strengthening Construction Safety Production" issued by the State Construction Commission (No. 168), and in accordance with the relevant provisions of the People's Republic of China Criminal Law and the Beijing Municipal Labor Bureau’s "Safety Inspection Rules," this document has been developed to ensure the safety of construction and installation workers during the production process and to strengthen enterprise management. These procedures are specifically tailored for elevator maintenance and repair projects, and all personnel involved must strictly follow them. Those who comply will be commended, while those who violate these rules will face criticism, education, or more severe consequences if repeated violations or serious incidents occur.
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### I. General Safety Regulations
1. All employees, including apprentices, interns, contractors, and temporary workers, must be familiar with the safe operation procedures for their specific tasks and must not drink alcohol or engage in inappropriate behavior such as talking or laughing during work.
2. Elevator maintenance and repair operations must be carried out under the "Overhaul and Maintenance" mode.
3. Only the inspection and repair speed is allowed when working on an elevator, and after completing the maintenance, staff should leave the site or move to a safe position before testing at normal speed.
4. Employees must wear proper protective equipment at all times. Wearing slippers, high heels, or going barefoot is strictly prohibited. Work clothes should fit properly and not restrict movement.
5. It is strictly forbidden to carry passengers during elevator maintenance or repair.
6. Personnel must not enter or exit the elevator car while it is running or being manually cranked.
7. Generally, the computer room control panel door must not be opened. If it is necessary to open the door, the car's position must first be confirmed, and a designated person must monitor the floor level to ensure safety.
8. Each elevator maintenance team must develop rescue plans for passenger entrapment based on the type of elevator they handle. All personnel must be proficient in these methods. Regular training and drills are essential to prevent mistakes and ensure safety.
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### II. Safe Operation Procedures for Elevator Maintenance and Repair
#### 1. Working Inside the Car
- Before entering the car, check that it is properly parked on the current floor. Do not rely solely on the floor indicator light; always verify the actual position before opening the door.
- After entering, check the operation panel buttons for flexibility and reliability, and ensure the emergency stop switch is functional.
- Never open the outer door while inspecting or maintaining the elevator. Close the door after completing checks to prevent others from falling into the shaft.
- If the hall door cannot be closed immediately, assign a guard or install a secure barrier with warning signs to prevent accidents. Inform the user promptly.
- When performing repairs inside the car, avoid extending any part of your body beyond the car floor. If necessary, disconnect the emergency stop switch to prevent accidental activation. For complex tasks, ensure the power is disconnected first.
#### 2. Working on Top of the Car
- Before accessing the top of the car, confirm that it is positioned correctly on the desired floor. Always double-check the floor indicator light and have the operator repeat the command before moving the car.
- When working in the pit, ensure the car is stopped. If it needs to be moved to the top or bottom, staff must stand in a safe location to avoid being hit by the counterweight.
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### III. Emergency Operation Procedures
1. If the elevator is stuck with passengers, disconnect the power supply first, then safely release the passengers using the correct rescue method, address the fault, and raise the car.
2. If the elevator is at the bottom, disconnect the main power, then safely release the passengers, fix the issue, and lift the car.
3. If the elevator car is stuck:
- Disconnect the main power and use the rescue method to release passengers. If the car is more than 60 cm above the floor sill, do not allow passengers to exit until the rescue is complete.
- In mid-floor situations, use the appropriate rescue method to safely lower the car.
4. If the elevator doors do not close:
- Expect the car to move unexpectedly after the doors are closed. No passengers should be present during this time. Maintain awareness to avoid injury.
- Never operate the elevator without closing the doors. If the doors need to be opened briefly, assign someone to watch over them.
5. If the elevator doors do not open:
- Ensure passengers inside understand instructions and remain calm. Do not open the doors if the car is in an unsafe position.
- Avoid forcefully opening the doors. Manual opening should be done carefully to prevent passengers from rushing out.
6. Under no circumstances should the elevator be operated at the locked position in the machine room. If required, only a short period of operation is allowed under supervision, with the door lock contact shorted. The wiring must be removed as soon as possible to restore normal operation.
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### EC-2100 Technical Specifications
**Speed Range:** 0.1 ~ 2000.0 m/min
**Rotational Speed Range:** 1 ~ 20,000 r/min
**Distance Measurement:** 0 to ±999 mm*
**Measurement Time:** 10 ms
**Update Time:** 100 ms
**Key Features:**
- Measuring range up to 2000 m/min, calculation time as fast as 10 ms
- Data saving function (up to 10 sets)
- Standard analog voltage output and pulse output
- Maximum value retention function
- Average processing function (1–200 settings)
- Automatic power-off and battery level indication
- Optional EC-0202 distance measurement function
- Optional EC-0201 external detector
- Optional peripheral speed ring KS-300 for handheld use
**Product Description:**
The EC-2100 is a compact, lightweight, battery-powered hand-held elevator speedometer used for elevator adjustment, maintenance, and inspection. Compared to the previous model (EC-900), it offers a 2x wider measurement range (up to 2000 m/min) and a faster calculation time (10 ms). It measures elevator speed by gently touching the traction machine's pulley. A red LED display ensures easy visibility, even in low light conditions. With optional accessories like the EC-0201 external detector or EC-0202 distance measurement function, one person can perform tests independently.
**Technical Details:**
- **Measuring Method:** Contact type
- **Accuracy:** ±1 count
- **Display Update Time:** 100 ms
- **Resolution:** 0.1 m/min, 0.1 r/min, 1 mm (with optional function)
- **Battery Life:** Over 15 hours (at normal temperature)
- **Dimensions:** 60 x 162 x 38 mm
- **Weight:** Approximately 423g (including battery)
**Optional Accessories:**
- EC-0201 External Detector
- EC-0202 Distance Measurement Function
- EC-0203 Trigger Device
- KS-300 Speed Contact Rod
- KS-400, KS-500, KS-800 Cycle Speed Rings
- EC-0924 Extension Rod
- Signal Cables (EC-0921, EC-0922, etc.)
For more information, visit [www.chinawj.com.cn](http://www.chinawj.com.cn)
*Note: The EC-2100 requires optional peripherals such as the KS-300 speed contact rod or KS-400/500 cycle speed rings for full functionality.*