Wilo Actun OPTI-QS Series, Installation And Operating Instructions Manual

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68 WILO SE 02-2019 DIN A5
English INSTALLATION
23. Remove the supporting clamp, square timbers and guide the connection cable to the
outside through the well closure.
24. Place the unit on the well and fasten the well closure.
25. Fit the pressure pipe to the tap on the well closure and route the connection cable to
the switchbox.
Installing piping for deep wells
Long piping is needed for deep wells. With lengths of 10 m or more, impermissible ben-
ding stress may occur when lifting the piping and it may become damaged.
To prevent this, the piping must be installed successively in short lengths.
To do this, the individual sections (recommendation: max. 3 m) are lowered into the
borehole and installed one after the other. This way, longer piping can be installed for
deep wells without any problems.
NOTICE:
Metal pressure pipes must be integrated into equi-
potential bonding according to the locally applicable
regulations and approved rules of technology:
• In this process, make sure the contacts are con-
nected across an area that is as large as possible
and guarantee a low-resistance connection!
Installing flexible piping
The pump can also be used with flexible piping (e.g. hoses). In this case, the piping is
fitted to the pressure connection and then lowered into the borehole together with
the pump.
Observe the following in the process:
• Nylon or stainless steel guys are used to lower the pump.
• The guy must have sufficient bearing capacity for the complete system (pump, piping,
cable, water column).
• The guy must be fastened to the attachment points (eyelets) provided on the pressure
port for that purpose. If these attachment points are not available, an intermediate
flange containing suspension points must be installed.
DANGER due to improper fixation.
The guy must not be wound around the pressure
port or affixed to the piping. This could result in
slipping or the piping might become separated.
There is an increased risk of injury! Always attach
the guy to the specified attachment points!