Basic Advice On Fixing The Switchgear In Place; Level Control; Dry-Running Protection - Wilo Control EC-L Einbau- Und Betriebsanleitung

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6.4.1 Basic advice on fixing the
switchgear in place
6.4.2 Installation of switchgear
6.4.3

Level control

6.4.4

Dry-running protection

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Installation
▪ Level sensor and connection cable provided by the customer.
▪ While laying the cable, ensure that there is no tension, no kinking and no pinching that
could damage the cable.
▪ Check the cable cross-section and length for the routing type chosen.
▪ Seal unused threaded cable connections.
▪ Observe the following ambient conditions:
– Ambient/operating temperature: -30 °C...+50 °C
– Relative humidity: 40...50 %
– Max. relative humidity: 90 %, non-condensing
Various structures can be used for installation (concrete wall, mounting rail, etc.). For
this reason, the fixation material for the relevant construction must be provided by the
customer and the following information must be observed:
▪ To prevent cracks in the masonry and chipping of the construction material, ensure suf-
ficient clearance to the edge of the structure.
▪ The depth of the borehole depends on the length of the screws. Drill the borehole ap-
prox. 5 mm deeper than the screw length.
▪ Drilling dust impairs retention force. Always blow the borehole clean or vacuum it out.
▪ Do not damage the housing during installation.
Attach the switchgear to the wall with the four screws and wall plugs.
▪ Max. screw diameter:
– Control EC-L 1x.../EC-L 2x...: 4 mm
– Control EC-L 3x...: 6 mm
▪ Max. screw head diameter:
– Control EC-L 1x.../EC-L 2x...: 7 mm
– Control EC-L 3x...: 11 mm
‡
Switchgear is disconnected from the mains and voltage-free.
1. Align the drill template at the installation location and attach.
2. Drill and clean the mounting holes in accordance with the specifications of the fix-
ation material.
3. Remove the drill template.
4. Loosen the screws on the cover and remove the cover to the side.
5. Attach the lower part to the wall with the fixation material.
Check the lower part for deformations! Realign deformed housing covers (e.g. by
placing alignment plates below them) to ensure the housing cover closes pre-
cisely.NOTICE! If the cover does not close correctly, the protection class is com-
promised!
6. Close the cover and fasten it with the screws.
▶ The switchgear is installed. Now connect the mains, pumps and signal transmitter.
For automatic control of the pumps, a level control device must be installed. To this
end, the following signal transmitters can be connected:
▪ Float switch
▪ Level monitor
▪ Level sensor
▪ Dynamic pressure bell ("IPS" version only)
The signal transmitters must be installed according to the system's installation plan.
Observe the following points:
▪ Float switch: Float switches must be able to move freely in the operating space (pump
chamber, tank)!
▪ Dynamic pressure bell: The use of a bubbling-through system is recommended for the
optimal venting of the dynamic pressure bell.
▪ Do not undershoot the minimum water level of the pumps!
▪ Do not exceed the switching frequency of the pumps!
Level measurement can be performed using the level sensor, the dynamic pressure bell
or a separate float switch. If a level sensor or dynamic pressure bell is used, then adjust
the switching point via the menu. A forced switch-off of all pumps always takes place
in the event of an alarm, irrespective of the selected signal transmitter!
The following applies to the "fill" operating mode:
▪ Realise dry-running protection in all cases via the "Extern OFF" input!
WILO SE 2018-12