Motor Driven End Type System
• Relatively low cost piping work.
• System can be designed simply as completion of lubrication is controlled by end pressure.
• Suited to installations where lubrication locations are widely scattered.
Automatic operation is performed based on the lubrication interval set by the system timer on the electric control panel (5). In addition to the “Tank Empty” and “Overload operation” alarms, “Oil feed time extension” alarm is displayed to indicate an abnormal lubrication state by the signal timer.
The signal timer is set to roughly twice the completion time of lubrication operation.
When the pressure difference of the end of the main supply line where the pressure control valve (4) is installed reaches the preset pressure, the pressure control valve (4) is switched to send a signal to the electric control panel (5), and switch the solenoid operating valve (1a) to stop the pump (1).
After a certain period of time has elapsed, the system timer is activated to start lubrication by the main supply line on the opposite side. The lubrication time is planned to normally end within five minutes (max. eight minutes), and the standard set pressure of the pressure control valve is a differential pressure.
Example of Circuit Diagram (U series)
Note) One pressure control valve (4) is installed on one system at the end of the main supply line where pressure loss from the pump is the largest. Be sure to install and lay piping for one distributing valve (indicated inside the two-dot chain line) from the pressure control valve (4).
|1a||Change over valve||HV03|
|2||Distributing valve||DW-20 to 50 type
DV-30 to 60 type also can be used.
|3||Y type line strainer||T111-*|
|4||Pressure control valve||PV-2E type|
|5||Electric control panel||EA type|
Note) The change over valve of the U-5AE type motor driven grease pump is the SV-32MK.