Lowara ecocirc BASIC, Installation And Operating Instructions Manual

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- Rinsed thoroughly to prevent the presence of foreign objects and
impurities which could block the pump.
- Fully filled with the pumped media (water or water-glycol mix).
- Completely purged of air.
- To help to reach this, the pump has a built-in automatic air purge
function. See instructions for activating the air purge function in
section 2
- The air purge function can be activated any time during operation
when the presence of air is suspected in the system.
- The air purge function can be activated several times in a sequence
if necessary.
- Audible flow noise indicates that there is still air in the pump.
7.3
Typical setting
The corresponding values are derived from the hydraulic calculation of
the system. If this calculation is not at hand, then the following speed
settings can be used:
Standard single-family home Apartment block
(approx. 140 m
2
@ 50 W/m
2
= 7 kW) (approx. 420 m
2
@ 50 W/m
2
= 21 kW)
ecocirc
…-4
2-3 e
cocirc…-6
2-3
If the temperature differential between the forward and the return is too
large, increase the power; if the temperature differential is less than
expected, reduce the power even further. (Guideline values: underfloor
heating: 8
–10 K; radiator heating: 15–20 K).
8.
Maintenance/Disassembly
Pumps are subject to wear. If the pump is blocked (see section 9) or
grinding noises are audible, check the pump and replace it if
necessary. Procedure:
- Before any disassembly attempt, always disconnect
the pump from the mains.
- Shut off supply and drain lines. If there are no shut-off
devices, drain the system so that the fluid level is
beneath that of the pump.
- Loosen the union nut by hand or with an appropriate
tool (such as a strap wrench) and carefully pull the
motor out of the pump housing.
Residual water may leak out of the rotor cavity. Prevent ATTENTION