Wilo CronoTwin-DL Einbau- Und Betriebsanleitung Seite 53

8.1.1 Activation
8.1.2 Switching off
8.1.3 Operation
Installation and operating instructions Wilo-CronoLine-IL, CronoTwin-DL, CronoBloc-BL
• By briefly switching on, check whether the direction of rotation
agrees with the arrow on the fan cover. If the direction of rotation
is incorrect, proceed as follows:
• For direct starting: Swap 2 phases on the motor terminal board
(e.g. L1 for phase L2),
• For Y-Δ start: Swap the winding start and winding end of 2 windings
on the motor terminal board (e.g. V1 for V2 and W1 for W2).
• The unit may only be switched on when the shut-off device on the
pressure side is closed! Only after full speed has been reached may the
shut-off device be slowly opened and be adjusted to the duty point.
The unit must run smoothly and free of vibration.
During the running-in period and normal operation of the pump, a
small amount of leakage, i.e. a few drops, is normal. A visual inspec-
tion is required from time to time. If there is clearly detectable leak-
age, the gasket must be replaced.
• Immediately after the conclusion of all work, all the provided safety
and protection equipment items must be properly installed and put
into operation.
DANGER! Risk of fatal injury!
Failure to install safety devices on the terminal box or near the
coupling can cause electrical shock or contact with rotating parts,
potentially resulting in life-threatening injuries.
• Immediately after maintenance, all previously removed safety
devices, such as terminal box covers or coupling covers, must be
reinstalled!
• Close the shut-off device in the pressure pipe.
NOTICE:
In case a non-return valve is installed in the pressure pipe, the shut-
off device can remain open insofar as a counter pressure is present.
CAUTION! Risk of material damage!
Risk of damage due to incorrect handling.
• When switching off the pump, the shut-off device in the inlet pipe
may not be closed.
• Switch off the motor and allow it to coast down completely. Ensure
the coasting is smooth.
• For longer downtimes, close the shut-off device in the inlet pipe.
• For longer periods of non-use and/or danger of freezing, drain the
pump and secure it against freezing.
• After removing the pump, keep it in a dry and dust-free storage.
NOTICE:
The pump should always run smoothly and vibration-free and not be
operated in conditions other than those specified in the catalogue/
data sheet.
DANGER! Risk of fatal injury!
Failure to install safety devices on the terminal box or near the
coupling can cause electrical shock or contact with rotating parts,
potentially resulting in life-threatening injuries.
• Immediately after maintenance, all previously removed safety
devices, such as terminal box covers or coupling covers, must be
reinstalled!
DANGER! Danger of burns or freezing to the pump when body parts
come into contact with the pump!
Depending on the pump or system operating conditions (fluid tem-
perature), the entire pump can become very hot or very cold.
English
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