Adjust Operating Mode And Pump Output; Maintenance; Shutdown - Wilo Yonos MAXO Instrucciones De Instalación Y Funcionamiento

8.4

Adjust operating mode and pump output

Factory settings heating pump
The pumps are delivered in control mode Δp-v. The required delivery head is preset to ½ of the maximal re-
quired delivery head (see pump data in the catalogue). Adjust operating mode and pump output according to
system requirements.
Factory settings drinking water pump
The pumps are delivered in control mode Δp-c. The required delivery head is preset to ½ of the maximal re-
quired delivery head (see pump data in the catalogue). Adjust operating mode and pump output according to
system requirements.
Adjust the settings
In the design, the system is configured at a certain duty point (hydraulic full load point at calculated maximum
heating load or total resistance of the drinking water pipe network). When commissioning, adjust the pump
output (delivery head) to the corresponding duty point. Select the alternative operating mode with constant
speed.
1. Adjust desired operating mode with operating button.
▶ The LED display shows the operating mode (c1, c2, c3) or the setpoint in m (at Δp-c, Δp-v).
1. Adjust the setpoint by turning the operating button (only at Δp-c, Δp-v).
NOTICE
The setpoint is displayed on the LED display in 0.5 m increments (at set delivery head < 10 m)
or in 1 m increments (at set delivery head > 10 m). Other steps are possible but not displayed.
9

Maintenance

9.1

Shutdown

The pump must be shut down before carrying out maintenance, repair or dismantling work.
DANGER
Risk of fatal electrical shock!
There is a risk of fatal injury from electric shock when working on electrical devices.
• Work on electrical components may only be carried out by qualified electricians!
• Switch off the voltage on all-poles of the pump and secure against unauthorised restart!
• Always switch off the power supply from the pump and if necessary SSM!
– Due to the presence of dangerous contact voltage, work on the module must not be
started until 5 minutes have elapsed!
• Check whether all connections (even potential-free contacts) are voltage-free!
• The pump may still be live even in voltage-free state. The rotor induces a contact voltage,
which is also present at the motor contacts. Close the existing shut-off valves in front of
and behind the pump!
• If the control module/Wilo plug is damaged, the pump must not be put into operation!
• In case of impermissible removal of operating elements on the control module, there is a
risk of electrical shock if inner electrical components are touched!
Installation and operating instructions • Wilo-Yonos MAXO/-D/-Z • Ed.01/2022-08
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