To automate the control of the original in the electric drive. The master controller can be coupled to the operating mechanism directly or via a reducer

The main controller contacts are closed and opened in a certain order according to the stroke or rotation angle of the operating mechanism. (Alternative motor To drive).

型号	键槽宽尺寸（mm）宽×长	安装孔个数-直径	出轴直径∅（mm）

LK4-658	6×25	4-∅12	∅17

Order production process

Production Process

Reasons for Return	Product time limit	Solutions	Remarks
quality problem	Date to 12 months	Exchange or free repair; reimbursement for freight	Written reasons
quality problem	More than 12 months	Cost charges for repairing or collecting spare parts	Special Treatment for Special Causes
Misdistribution of business	Return within 2 months (against bill of lading)	Documents to Compensate for Return Fees	Products should be intact
User mistakenly purchased goods	Return within 2 months (against bill of lading)	10% discount	Products should be intact
Customized products	Within 3 months from the date of leaving the factory	30% discount	The specific discount depends on the situation.
Customized products	More than 3 months	No refund or exchange	The specific discount depends on the situation.
Backlog of unsatisfactory sales	Within 24 months from the date of discharge	20% discount	After-sales Service Department Opinions shall prevail.
	24 to 36 months	50% discount
	Over 36 months	No refund or exchange
Out of Sale Products	Withdrawal of notice	No refund or exchange

Customer Service Center is one of the most important departments of Heli Automation Instrument Co., Ltd. Her main job is to accept customer comprehensive business consulting, provide technical support to customers; accept, coordinate, handle customer complaints, solve customer's difficult problems; actively communicate with customers, contact, understand customer's feelings and needs, and timely customer information Feedback to all relevant management departments and proper handling.

The Customer Service Center has a Customer Management Department and a Technical Service Department. The customer management department mainly accepts the customer's comprehensive business consulting, and the technical service department mainly provides customers with technical support and solutions for pre-sale, sale and after-sales products. In order to ensure that every customer can get satisfactory service in Heli Automation Instrument Co., Ltd. and maintain good cooperation with the company, we emphasize the pertinence and effectiveness of customer service, and implement the acceptance responsibility system, that is, the customer Every call and every question is responsible for making each other's feelings and understanding. If you have any questions or needs about our products, or have any comments or suggestions about our services, please feel free to contact us and we will do our best to serve you. Your satisfaction is the purpose of our service. The common development of the company and customers is our persistent pursuit.

In the face of the future, all employees of the customer service center will be passionate about warming customers and casting brilliance with service.

Fault check and maintenance

●Mechanical fault check

1. After pulling the switch handle, drive the valve with the handwheel to check whether the hand-electric switch is sensitive and reliable.

2. Check the action and indication of the mechanical opening indicator.

3. If the handwheel does not move and the valve is blocked, the repair valve should be removed. If the valve can be driven by the handwheel, check the electrical part.

4. If the manual operation is normal, there is no interference, and the valve stem does not work, it is necessary to check whether the connection of the valve stem joint is reliable.

●Electrical fault check (check the external controller first, then check the electric device)

1. Check the main power supply and control power supply, relay, fuse and all indicators and switches are normal.

2. Check the motor and replace it if there is a problem.

3. If the micro switch fails, it can be solved by replacing the relevant original.

●Maintenance

It is recommended to perform two routine maintenance or regular maintenance every year.