HRX-OM-Q026
Chapter 5 Display and Setting of Various Functions
HRSH Series 5.17 Pump Operation Mode Setting
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5.17 Pump Operation Mode Setting
5.17.1 Pump operation mode
Pump operation mode can be selected from the two modes shown below.
●Pressure control mode
The pump in this product automatically controls the circulating fluid
discharge pressure to be the set pressure.
When the piping resistance is too small, the actual pressure may not
reach the set pressure.
In such a case, the pressure fails to increase due to the too small piping
resistance even though the pump discharges the maximum flow.
This is not a malfunction of this product.
When the piping resistance is too large, the actual pressure may not
decrease to the set pressure. In such a case, the pressure fails to
decrease due to the too large piping resistance even though the pump
discharges the minimum flow.
This is not a malfunction of this product.
●Frequency set mode
The pump in this product is operated at the set frequency.
Use this mode when pressure control is not necessary.
5.17.2 How to set/check the pump operation mode and value
How to set the pump operation mode, how to set the value for each mode,
and the default setting and the default setting/value are shown below.
Table 5.17-1 Pump operation mode setting
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