Tricel Vitae UK6, Техническое руководство

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5.7 Concrete specification
Semi dry concrete 25n grade with a ratio of 4.5 aggregate to 1 cement.
Important:
• Do not use standard concrete mixes where sulphates or similarly aggressive chemicals
are present in the groundwater.
• Lift height (rate of rise): Determine the lift height (m), or rate of rise (m/h) for the
specific, concrete type used, to ensure that a design pressure (P max) of 15kN/m2 on the
tank does not get exceeded.
•
Vibration: The tank design assumes minimal compaction of the surrounding concrete.
Where necessary, this may be extended to include internal light vibration. Never use
deep revibration which will substantially increase the pressure on the tank, possibly
causing failure.
•
Impact of concrete on discharge: Under no circumstances should concrete be discharged
directly onto the tank.
5.8 Topsoil requirements
Clean native topsoil shall not contain rocks larger than 36mm on largest dimension.
5.9 Electrical requirements
Important
• Please ensure the electrical installation complies with all national regulations and
requirements
.
• Electrical installations must be carried out by a qualified and certified electrician.
• Please note different electrical requirements are dependant on the size of the Tricel
Vitae system, read the following sections carefully.
The customers’ minimum responsibility shall consist of:
• A single run of 1.5mm² three core (two conductors plus earth conductor) steel wire
armoured (SWA) cable from the customer’s distribution cabinet to the tank unit socket
box.
•
Cable protection via 10-amp MCB protected by (RCD), rated 230V, 30mA.
• Bond the cable armour properly to the main earth at the premises.
• Never disconnect the power to the air pump. It is imperative that it be running 24 hours a
day, every day.