Filling And Venting; Setting The Control Mode - Wilo Stratos PARA-C Einbau- Und Betriebsanleitung

CAUTION
A dry run leads to bearing damage!
Ensure that a dry run of the pump is not possible!
8.1

Filling and venting

Fill and vent the system correctly. The pump rotor chamber normally vents automatically after a short time in
operation.
NOTICE
Incomplete venting will lead to noises in the pump.
8.2

Setting the control mode

8.2.1 Pumps with operating button
(Fig. I a):
The control mode is selected with the operating button.
The following settings can be configured:
Constant differential pressure (Δp-c) setting range
Fig. I a, Item 9: The control mode Δp-c is active.
The number indicates the delivery head in metres of the water
column.
Variable differential pressure (Δp-v) setting range
Fig. I a, Item 10: The control mode Δp-v is active.
The digit indicates the delivery head in metres of the water column
at nominal flow rate.
Setting range ext. In
Fig. I a, Item 8: The external control is active. The control mode de-
pends on the technical version of the product. (See section
"Equipment variants")
The following settings are possible:
• Setpoint adjustment via analogue input 0 ... 10 V.
• Setpoint adjustment via pulse-width modulation (PWM).
• Setpoint adjustment at constant speed (not externally controlled).
Factory setting
The pump is supplied with the setting mode "ext. In" as standard.
8.2.2 Pumps without operating button
(Fig. I b):
The pump automatically follows its external control function. The control mode depends on the technical
version of the product. (See section "Equipment variants")
Installation and operating instructions • Wilo-Stratos PARA-C/-CZ • Ed.01/2023-04
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