Operation In An Explosive Atmosphere; Before Switching On; Switching On And Off - Wilo Padus PRO Einbau- Und Betriebsanleitung

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AUTO
ON
RESET
OFF
Fig. 6: Phase inverter
7.4 Operation in an explosive atmo-
sphere
7.5

Before switching on

7.6

Switching on and off

Installation and operating instructions Wilo-Padus PRO
Commissioning
Incorrect direction of rotation
If the direction of rotation is incorrect, exchange the two phases at the mains connec-
tion.
Pumps with CEE plug and phase inverter
1. Insert CEE plug into the socket.
2. Check the control lamp.
⇒ Control lamp off: Direction of rotation correct.
⇒ Control lamp on: Incorrect direction of rotation.
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3. Correct the direction of rotation.
180°
⇒ Use a suitable screwdriver to push the phase inverter into the plug and turn by
180°.
▶ Direction of rotation set correctly.
Operation in an explosive atmosphere is not permitted.
Check the following prior to activation:
▪ Check whether the device has been installed properly and in accordance with the locally
applicable regulations:
– Has the pump been earthed?
– Has the power supply cable routing been tested?
– Has the electrical connection been carried out in accordance with regulations?
– Are all mechanical components attached correctly?
▪ Check level control:
– Can the float switches move freely?
– Have the switching levels been tested (pump on, pump off, minimum water level)?
– Is additional dry-running protection installed?
▪ Check the operating conditions:
– Have the min./max. temperatures of the fluid been tested?
– Has the max. immersion depth been checked?
– Is the max. switching frequency complied with?
– Has a hard base been installed in the case of soft flooring?
– Are all gate valves open?
During the start process, the rated current is temporarily exceeded. During operation,
the rated current may no longer be exceeded. CAUTION! If the pump does not start,
switch off the pump immediately. Remove the fault before reactivating the pump!
Pumps with bare cable end
The pump is switched on and off using a separate operating point (on/off switch,
switchgear) provided by the customer.
Pump with attached plug
▪ After inserting the plug into the socket, the pump is ready for operation. The pump is
switched on and off with the ON/OFF switch.
Pump with attached float switch and plug
▪ After inserting the plug into the socket, the pump is ready for operation. The pump is
controlled via two switches on the plug:
– HAND/AUTO: Determines if the pump is switched on and off directly (HAND) or de-
pending on the fill level (AUTO).
– ON/OFF: Switches the pump on and off.
en
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