Solar
maintenance
pump
General information
The KELLER solar maintenance pump is an electro-
magnetically-driven vibrating piston pump. The
pump is characterised by its safe and reliable operation,
low running noise and ease of operation.
The pump has been specially optimised for the main-
tenance and refilling of thermal solar power systems.
The pump system can easily be replaced. The
performance range at a viscosity of 6 mm2/s (water)
can be taken from the diagram.
The pump can be operated intermittently or
permanently (i.e. several hours at 100 % ED). Dry
running must be avoided. The solar maintenance
pump is equipped with an integral thermo-element,
which protects the pump against overheating and
permanent damage. The thermo-element switches
the solar maintenance pump off on reaching a
temperature critical for the pump, and on again
automatically following cooling. The cooling time can
be up to 45 minutes or longer, depending on the
ambient temperature. Note that after automatic
switching off by the thermo-element, the pressure
side is shut off, in order to prevent uncontrolled
pumping. The thermo-element must not be used as
an automatic shut-off switch, since this will eventually
result in damage to the switch. After every period of
use, or after extended pauses, the pump must be
switched off using the switch on the pump.
Dirt particles and mineral contents of fluids will impair
the function of the pump. The installed filter must not
be removed.
The components coming into contact with the
medium are made of stainless steel or plastic. The
processing guidelines of the products used, and the
applicable legal and official regulations, must be
observed at all times.
Operating instructions
art. 286.932
