en – Original Instructions
Installation, Operation and Maintenance Manual
33
5.6
Operation modes
According to the chart in section 3.2 Integrated features and functions on page 11, the
different pump versions have different integrated functions, thus operation modes.
5.6.1
Fix speed models
These pumps are not equipped with a control knob; run on a constant speed if energized, until
reaching the power limit, then the speed may be reduced.
Timer controlled version is available, standby and air purge functions are not available.
5.6.2
Variable speed models
These pumps are equipped with a control knob, with which the speed can be controlled stepless
between a factory preset minimum and maximum value. For reference see the hydraulic curves at
the dedicated speeds based on the scaling of 1-7 in section 8.7 Hydraulic curves on page 43.
Timer controlled version is available, standby and air purge functions are standard, except some
special OEM versions.
Figure 16
5.6.3
Fix speed models with fix value temperature control
These pumps are not equipped with a control knob; run on a constant speed if energized, until
reaching the factory preset temperature limit; it is around 97 °F (36 °C) as default, then the pump
stops and switches to standby mode. When the fluid cools back to around 91 °F (33 °C) the
pump restarts.
Timer controlled version is available, standby and air purge functions are not available.
5.6.4
Fix speed models with variable value temperature control
There are two versions:
•
Adjustable switch off temperature (see Figure 17 left side view). The desired switch off
temperature can be selected between 68-158 °F (20-70 °C) using the selector knob. The
pump stops when it reaches the set temperature (switches to standby mode). When the fluid
cools back with ~5 °F (~3 °C) below the switch off temperature, the pump restarts.
•
Adjustable restart temperature (see Figure 17 right side view). The factory preset
temperature limit is around 97 °F (36 °C) as default, reaching this value the pump stops and
switches to standby mode. The desired restart temperature can be selected between
91-77 °F (33-25 °C) using the selector knob. When the fluid cools back to the set
temperature, the pump restarts.
Timer controlled version is available, standby and air purge functions are standard, except some
special OEM versions.
Figure 17
