Wilo Actun OPTI-MSH Einbau- Und Betriebsanleitung Seite 66

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8. Bring the casting mold to an upright position (connection cable at the bottom, pump
cable at the top) and secure it in this position so that the casting mold cannot tip over.
In this process, do not squeeze the casting mold.
9. Shake the casting resin mixture into the casting mold up to a fill level of approximately
10 mm below the mold opening.
10. Evenly pull the connection cable through the base of the casting mold until the mold
lid seals the casting mold. In this process, hold the pump cable and carefully feed it
through.
Make sure the water level sensor is not pulled into the casting mold when you are
pulling through connection cables!
11. Secure the pump cable so that no pressure is applied to the mold lid and it has been
positioned evenly on the casting mold.
12. If necessary wipe escaped casting resin from the connection cable.
13. Leave the casting resin mixture to harden for a minimum of 3 hours (at ambient tem-
peratures ≥ 16 °C) without moving the casting mold.
Once you have completed this step, check that the connections are not damage and
check the earthing duct. Measure the resistance between the motor housing / pump
and the ground terminal of the cable connection and check that it is below 3 Ω.
Once again measure the insulation resistance prior to connecting the connection
cables to the switchbox / main switch. This way, you can identify damage caused during
installation.
• Use an insulation tester (measuring voltage is 500 V) to measure the resistance of the
connection cable and the signal cable (if available).
• The resistance must not fall below the following values during initial commissioning:
• Power supply connection cable: min. 100 MΩ,
• Signal cable: min. 100 MΩ.
If the insulation resistance is too low, it is possible that moisture has penetrated into
the cable and/or the motor. Do not connect the pump. Consult the manufacturer!
If the insulation resistance is OK, connect the unit to the mains supply by connecting
the connection cables to the switchbox.
Electrical connections may only be made by a qualified electrician!
66
INSTALLATION
WILO SE 11/2018 DIN A5