Installation and Operating Instructions Wilo-Cronoline
11
Englis
h
Installation
7.
Install motor control, cabling, overload protection, mains
circuit breaker and accessories in accordance with the locally
applicable safety regulations.
8.
To protect the motor, overheating protection should also be
installed.
9.
Low temperature applications (below normal temperature
ranges) may require external motor and mechanical seal
heaters – contact WILO for additional details.
10.
Tighten cable screws
11.
Close terminal box and ensure that no spraying water can
enter it.
Caution when connecting to
an automatic pump control
device
Comply with respective installation and operating instructions
when wiring to automatic pump control device (DDC or Building
Management Systems). Be sure the following guidelines are met:
• AC power is within ±10% of rated voltage with rated
frequency (see motor name plate for ratings)
or
• AC power is within ±5% of rated frequency with rated voltage
or
• Combined variation in voltage and frequency of ±10%
(sum of absolute values) of rated values, provided the fre-
quency variation does not exceed ±5% of rated frequency
Note:
The connection diagram is located on an exterior
label or inside the terminal box.
Note:
Special motors can be supplied with a PTC thermal
sensor that must be connected to the PTC trip relay.
