Maintain_SRL Fluid Technology(Suzhou) Co., Ltd.

Regular maintenance

01. Replaced the lubricant regularly

After the initial operation of the equipment for one week, the initial addition of the oil should be replaced. Specific lubricating oil grades can refer to the description in the product manual. The oil level reaches the second mark of the oil standard. After 4000 hours of continuous operation of the equipment, it is necessary to replace the pump-inward lubricating oil. Oil replacement can refer to the description in the product manual. The oil level reaches the second mark of the oil standard. You can also consult the lubricant supplier to replace the same grade of lubricants. When the ambient temperature or material medium temperature below -50 ℃, the need for higher grade lubricants. Specific consultation can contact the dealer or factory after-sales service sector.

02. Replacement of vulnerable parts within one year

According to the operating characteristics of the equipment,we has specially designed the spare parts for regular maintenance. The spare parts kit contains all the vulnerable parts of the flow end of the device, including diaphragm assembly, valve ball/seat (or one-way valve group), oil seal, and related seals. In the non-critical operating environment, it is recommended that users take a disassembly inspection and confirmation of the wear of the vulnerable parts in about 6 months. If there are major wear and tear, it is recommended to replace the relevant vulnerable parts in time and adjust the maintenance cycle. If wear is within acceptable limits, it is recommended to replace the vulnerable parts once a year.

03. Three year operation and maintenance

It is recommends that customers run and maintain the equipment once every three years. This maintenance requires thorough maintenance of the device's overcurrent and drive terminals, requiring disassembly and maintenance of the overcurrent and drive terminals. Replace parts that are overly worn. Among them, it is recommended that the seal parts and bearings of the drive end be replaced except for the normal replacement of the vulnerable parts.

Fault Diagnosis of Mechanical Diaphragm Metering Pump

Phenomenon	Cause	Solution
The pump can not run normally or run without flow	Liquid level in the reservoir is too low.	Add liquid to the pool.
	Check valve is damaged or contaminated.	Cleaning or replacement.
	The tubing is blocked.	Clear Pipeline.
	Liquid is frozen.	Dissolve the whole dosing system
	The fuse is blew out .	Replace the fuse.
	The thermal overload device in the motor starter jumps off .	Reset the thermal overload device.
	The cable is disconnected .	Find the position and repair it.
	The voltage is too low .	Test and calibrate (maybe the cable is too fine).
	The pump is not filled with liquid .	Before piping the pressure line, the pipette and pump head should be filled with liquid.
Pumping fluid is insufficient	Check valve seat wear or contamination	Cleaning or replacement
	The stroke adjustment is set to zero position	Reset stroke setting
	The pump is running at a wrong speed	Match the power supply voltage and frequency to the data on the pump motor nameplate
	Lack of liquid	Increase the diameter of the pipette or increase the suction head
	Suction tube leakage	Repair the suction line
	Suction is too high	Rearrange the equipment to reduce the suction process
	The liquid approaches the boiling point	Cooling the liquid or increasing the suction head
	Leakage of relief valve in the liquid discharge pipeline	Repair or replace the safety valve
	Liquid viscosity is too high	Reduce viscosity (e.g. heating or diluting liquid)
The infusion volume is unstable	Suction tube leakage	Maintenance of suction line
	Safety valve leakage	Repair or replace the safety valve
	Insufficient suction water	Improve the liquid level of the suction tank or use the pressure solution tank
	The liquid approaches the boiling point	Cooling the liquid or increasing the suction water
	Check valve seat wear or contamination	Cleaning or replacement
	Piping filters are blocked or contaminated	Cleaning strainer
Motor and pump body overheated	The operating temperature of the motor and the pump is often hot	No more than 93°c
	Power does not conform to electrical specifications of the motor	Make sure the power supply matches the motor correctly
	Pump running under rated performance condition	Reduce the pressure or stroke speed, If this does not work, please contact the dealer or factory after-sales service department
	Pump lubricating oil filling is incorrect.	Discharge the oil and refill the appropriate amount of recommended lubricant
When the pump is set at zero stroke, the liquid is still transported	Error adjust the scale knob	Re-adjust Stroke settings
	Lack of hydraulic difference	Correct operating conditions
Excessive gear noise	The backlash is too large	Please contact the dealer or factory after-sales service department
	Bearing wear	Please contact the dealer or factory after-sales service department
	Incorrect marking of lubricating oil or insufficient filling amount	Replacement or replenishment of lubricating oil
Every stroke has a loud crash	Excessive loss of gear parts	Please contact the dealer or factory after-sales service department
Every stroke has a loud crash	Bearing wear	Please contact the dealer or factory after-sales service department
The liquid end runs with noise	Noise in a check valve	The ball is moved up and down by a certain force, and a special "tick" noise is normal, especially in a metal piping system
Leak detection at bottom of pump head, material leakage	Diaphragm broken	Change the diaphragm
Pump head Bottom inspection hole, lubricant leakage	Oil Seal Rupture	Change oil seal