Biral ModulA RED Serie Instrucciones De Montaje Y Funcionamiento página 10

10 | english
Glykol:
The pump can be used for delivering water-glycol mixes. Maximum permissible viscosity: 50 mm²/s
(cSt). This corresponds to a water-ethylene-glycol mix with a glycol content of around 50% at –10°C.
The pump is controlled via an output-limiting function that protects against overload. The delivery
of glycol mixes affects the MAX characteristic curve because the delivery capacity is reduced
accordingly, based on the glycol content and temperature of the media. So that the effect of the
glycol is not reduced, temperatures above the nominal temperature given for the medium should
be avoided. Generally, the operating duration with high media temperatures should be minimised.
Before adding the glycol mix, it is vital that the system is cleaned and rinsed. To avoid corrosion or
precipitations, the glycol mix should be checked regularly and changed if necessary. If the glycol
mix has to be further thinned, the specifications from the glycol manufacturer should be adhered to.
For the delivery of a liquid with density that differs from water and/or kinematic
viscosity, the delivery output is reduced.
Domestic hot water:
Permissible water hardness:
max. 35 °fH (20 °dH) (water temperature below 65 °C)
max. 25 °fH (14 °dH) (water temperature below 85 °C)
To counter the risk of lime deposits, for domestic hot water systems we recommend:
Hardness level max. 25 °fH (14 °dH) Medium temperature <65 °C
Warning
The pump may not be used to deliver combustible media such as diesel and fuel.
Warning
The pump may not be used to deliver aggressive liquids such as acids or seawa-
ter.