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11.
Functional description
11.1 General
The device helps to supply the central lubrication system or individual lube points, with lubricant. Depending on the type of application,
the pump can be used for single line, dual line or progressive systems. There are various accessories for the barrel pump BEKA
Stream E, like barrel cover, follower piston or container (see accessories).
11.2 General
components
11.2.1 Pump
The pump is driven by a brushless DC motor. Due to an eccentric in the housing, the rotation motion of the motor is transformed to a
stroke movement of the piston rod. The delivery piston of the pump is connected with the piston rod, thus a suction and pressure stroke
is effected. Hence lubricant is pumped into the end of the conveying pipe and supplied to the pressure outlet. A reverse pumping of
lubricant is avoided by a non-return valve. The integrated return connection can be used to led back surplus lubricant to the barrel.
11.3 Components
11.3.1 Level monitoring
The ultra sound sensor monitors the lubricant level in the reservoir and sends a signal at minimum level. The ultra sound sensor sends
a signal for barrel exchange as soon as the barrel is empty. The signal evaluation is done by the customer.
Two TEACH methods may be used to configure the sensor:
• Teach individual minimum and maximum limits, or
• Use Auto-Window feature to center a sensing window around the taught position.
Also observe the technical documentation of the ultra sound sensor enclosed.
In order to avoid that air is pumped into the lubrication circulation, we recommend to switch off the device
when receiving the empty signal.
11.3.2 Ventilation valve
The ventilation valve in the reservoir cover helps to filter the incoming air during the pressure compensation that is caused by varying
level. The ventilation filter element has regularly to be checked and renewed at visible pollutions.
11.3.3 Grease level dipstick
When the grease level dipstick is pulled out of the reservoir, you can see the lubricant level at the stick. In order to avoid that dirt enters
the reservoir, the dipstick has to be put completely into the drilling.
11.3.4 Single line block
A relief valve can be attached as a block at the pump pipe at a device for single line systems. It is directly flanged at the pressure and
return connection.
11.3.5 Pressure limiting valve
Optionally, a pressure limiting valve can be attached to the device for progressive and dual line systems. It is available as component
for a customer-specific attachment in the entire system or as a module for direct attachment at the pump pipe. It has an opening
pressure of 280 bar.
Attention!
