Hydor HEB, Installation And Maintenance Instruction

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5.2 Isolate supply to HE fan.
5.3 Disconnect the wiring from the motor terminals. Make sure the wiring
is adequately marked for reconnection.
5.4 Withdraw all cables from the motor and detach from motor arms to clear
HE fan assembly.
5.5 Ensure the HE fan assembly is adequately supported to avoid injury or
damage.
5.6 Unbolt the HE fan assembly from its mounting (4x fixings in the mounting
plate).
5.7 Lift the HE fan assembly away from its mounting location and place out of
the way for disposal or recycling at a local facility.
5.8 The new fan can now be fitted as follows:
5.9 Lift the new HEB fan into the original mounting place.
6.0 The fixing holes will line up exactly to the HE fan fixing points for 630mm
and 710mm models. When replacing the 760mm HE with a 710mm HEB,
the mounting holes will move slightly.
6.1 Ensure the HEB fan assembly is adequately supported.
6.2 Fix the HEB fan assembly into the aperture in the same manner as the HE
fan was.
6.3 Re-run power supply cables to the new motor.
6.4 Connect wiring to new fan, see section 9. Please note
that if the fan is single phase, the capacitor value will have changed.
6.5 Secure all loose cable as required to make safe.
6.7 The fan is now ready to switch on and test.