Druck PV 411 User Manual
Page 13
K258 Issue No. 1
Priming the system
There are two methods: vacuum priming to extract the air or pre-
filling the system.
Notes:
1
If air remains in the system, full pressure cannot be
achieved as the air in the fluid compresses. Air must be
removed from the system fluid.
2
Both priming methods require the pump to be held in
the vertical position to keep the reservoir bleed hole in fluid.
Do not allow air to enter the system through this bleed hole.
Vacuum priming (Figure 2)
Connect the equipment as detailed on page 5.
Air can be removed using the vacuum facility on the pump.
Note:
This method should not be used with vacuum-sensitive
equipment.
Turn selector valve fully out, anti-clockwise (vacuum position).
Pump until bubbles stop appearing in the reservoir, (this generates
a vacuum in the system).
Turn the selector valve fully in, (this action releases the vacuum and
rapidly fills the system with fluid from the reservoir).
The pump and connected system is ready for use.
