English / SERVICE-Ji'nan Tianhong Machinery Manufacturing Co., Ltd.

Common failures and troubleshooting methods

	Reason	Exclude
Lifting or lifting of the lifting platform	Overload	Lighten load
	Voltage too low	Check the starter motor load potential at work. Voltage floating range allowed ±10%
	Motor does not turn	Check motor and circuit
	Motor reversal	Arbitrary change of the two phases in the three-phase line.
	Motor phase (motor does not move, and there is a hum)	Check circuit breaker and motor connection.
	Drop valve open	In the down button release state, with the voltage meter check whether there is electricity down valve. If there is no electricity, then check the line, and troubleshooting; if there is electricity, then the valve itself is ruled out fault. Drop valve spool valve must be kept clean, flexible and mobile.
	Relief valve low pressure	Adjust relief valve. Adjusted under 100% rated load
	The oil level is too low, the oil pump suction	The hydraulic oil fill
	Oil absorbing filter clogging	Cleaning filter
	Oil absorption segment leakage	Check oil suction pipe and joint; tighten the joint. Replace connectors if necessary.

	Reason	排除
Lifting Taiwan natural decline	One-way valve drain	Check valve in the valve group. If it is found that the single valve sealing surface dirt cleaning, check valve.
	Drop valve closed lax	Check whether the decline in electricity, such as electricity is ruled out by the fall of the valve itself or the replacement valve failure. Drop valve spool valve must be kept clean, flexible and mobile.
	Oil pipe or valve connection parts	Tighten or replace the cylinder seal
Lifting platform does not drop	Down valve failure	In the press down button, check whether there is electricity down valve. If no electricity, try to rule out; if there is electricity, the valve itself is excluded from the failure, or replace the falling valve. Down valve should be kept clean and lubricated.
Lifting platform does not drop	Fall speed control valve	Adjust the drop speed control valve, such as the adjustment of the new valve is invalid.

Service commitment

Tianhong machinery always adhere to "quality first, customer first, integrity-based" business philosophy. Committed to providing high-quality products, perfect after-sales service, fast delivery. No matter where you are, you can feel our professional and technical personnel are quick and good service.

Warranty commitment

The company's products within one year of the normal use of the product quality reasons (non use of improper or man-made causes) caused by equipment failure, all free warranty. Company to provide customers with a lifetime of products to maintain service, welcome new and old customers call to discuss the consultation.

—Provide safe and reliable lifting platform

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