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8 Operation
8.1 Operation of the pumping centre
When pressurisation starts, control unit opens both the line to be pressurised and the pump solenoid valves.
Pneumatic system starts the pump and opens the line control valve. Pressurisation continues until the pres-
sure at the pressure monitoring unit reaches a pre-set acknowledgement level. After acknowledgement, the
control unit closes the solenoid valves, the pump stops and pressure discharges from the line to the lubricant
barrel.
If the lubricant level in the barrel reaches the low limit level during pumping, the low-level switch sends an
alarm to the control unit and pumping is stopped. The alarm can be reset by replacing the lubricant barrel and
resetting the alarm at the control unit.
The numbers in brackets are the position numbers for Figure 2.
8.2 Commissioning
DANGER
Electrical shock
Electrical connections must only be made by qualified electricians. Minimise the risk of electric shock by
making sure that the pumping centre is turned off before making connections. Power must be turned off
before work involving handling of conductive parts or
opening any part of the system or product.
WARNING
Pressurised lubricant
Make sure that the system is depressurised. Remove pressure from the grease filter before opening it with
the help of a venting screw located in the filter plug (11, Figure 5). Turn off the air supply by lifting the shut-
off valve button (1, Figures 7 & 8) or set air pressure to 0 bar using the pressure regulator (2, Figures 7 &
8) and the pressure gauge (3, Figures 7 & 8). Disconnect the M12 cable (7, Figures 5 & 6) from the pump.
Any residual pressure in the system when opening or disconnecting components may cause components
to be thrown or lubricant to spray, causing injury to people or damage to the environment.
WARNING
Pressurised lubricant
The pressure in the pneumatic system must be regulated so that the pressure at the pumping centre can-
not under any circumstances exceed 300 bar (4,350 psi/30 MPa). A higher pressure may damage the sys-
tem components and cause injury to people or damage to the environment.
ATTENTION
Make sure that the surroundings are clean. Make sure that no impurities enter the pump, the follower
plate or the lubricant barrel. Impurities may cause damage to the lubrication system or the machine or
device being lubricated.