Locating Blockage In Series-Flo Systems - ABB IRBT 4003S Product Manual

Maintenance instructions

Locating blockage in Series-Flo systems

2.1.11 Locating blockage in Series-Flo systems
Description
In a Trabon Series-Flo system, free flow of lubricant from the pump through the
transmission system and the bearings is necessary.
If any portion of this transmission system (a divider valve, line fitting or any
bearing) does not freely accept and pass its portion of the lubricant a blockage has
occurred.
This blockage will cause a higher than normal pumping pressure to be developed by
the pump.
Depending on the application or system design, this blockage with its resultant high
pump pressure will usually cause a complete loss of lubricant flow into the total
system and no bearing will be receiving lubricant.
The loss of flow due to a blockage is first indicated with the higher than normal
system pressure that is developed by the pump as it attempts to overcome this
blockage.
Divider valve
A Series-Flo type divider valve is a manifolded proportioning device consisting of
an inlet and end section plus a minimum of three intermediate sections.
The divider valve is manifolded together with tie rods and nuts. A master divider
valve is the first divider valve downstream from the lube pump. A secondary divider
valve is any divider valve receiving lubricant from the master divider valve.
Warning!
Never block a lube outlet that is designed to discharge lubricant.
Figure 2 Divider valve
3-8 3HEA 800 970-001 Rev. D, Mars 2006