Common faults of metering pumps
1) the metering pump is not normal
Rotate to stroke length 100% position. This allows the kit to rotate to the back of the drain hole and align the bottom of the pump. Adjust the hydraulic end and diaphragm to the proper position during the pump operation.
The duration of the pulse may not be long enough for the reaction time. With respect to the standard pulse width 80msec, the flow monitor pulse width expansion can be activated, increasing the pulse width to 300msec. Activate the smart switch, remove the cover fixed circuit board, remove the jumper X-1. This activates the extended function and allows more time before the failure instructions.
Metering pump installed from the exhaust pump head, the use of self suction liquid imbibition. Keep the suction line as short as possible.
2) change the metering pump diaphragm
Trouble is often encountered when the old diaphragm is removed. Provide some additional advice on how to remove the old diaphragm.
After in the pump head loose, remove the pump head before the stroke length adjustment to the 10% position. To ensure that the electromagnetic axis has sufficient pressure to maintain its connection firmly, so that you can unscrew the diaphragm.
The pull end torque from the Jack out of the screw. Seize the liquid counter clockwise rotation. There is a slight resistance that can unscrew the diaphragm.
Chemical 3 measurement may end in fluid crystallization, resulting in a one-way valve ball and seat valve does not work.
In the end inhalation metering pump may have a gas leak. Hydraulic end suction side connector may lack O ring or suction valve connection loose.
3) flow monitoring and measurement of a high viscosity medium, in the process of liquid delivery received a flow failure signal, how can we solve this problem?
Move the hydraulic end by loosening the 4 pump head screws. Rotating stroke length to 10%, and seize the hydraulic end, and then slide out of the screw hole, then the screws do not touch them, but still control the back and diaphragm. Then rotate the component counter clockwise, with a slight resistance, and the diaphragm will loosen from the electromagnetic axis. If the diaphragm is not loose, use some grease on the contact surfaces of the diaphragm and the electromagnetic shaft. After a few minutes, gently tap the diaphragm with a small plastic hammer. Then proceed again in accordance with the above description.
4) how to prevent the metering pump stroke positioning motor burnout?
4 screws fixed the pump head removed. The screw is positioned on the back of the metering pump.
See if the installation of the drainage pipe and drain valve closed? The discharge valve needs to be opened at the metering pump priming stage. Note: not all metering pumps have drain valves.
After in the diaphragm installed and back leakage from the hole in the vertical position, the installation of pump head. Make sure the suction valve is aligned with the drain hole, and the hydraulic screw is aligned with the corresponding 4 holes.
5) hydraulic metering pump flow smaller or inaccurate?
The valve in the valve open three.
Through the fill oil valve fully fill oil.
Add: No.658,20th Avenue,Hangzhou Economic & Technological Development Zone,Hangzhou,Zhejiang,China
Tel: 86-571-86878013
86-571-86403988
86-571-86400588
8615058179600
Fax: 86-571-86408588
Code: 310018
E-mail: yangyang@depamu.com
(Español)E-mail: wangyunxiao@depamu.com
