Nederman VAC 12, Instruction Manual

Page: 31 / 356

VAC 12/20
31
EN
9.9 Optional: Anti surge control
Every 500 hours check that the unit does not pump and that the valve ‘floats’ at
varying air flow.
This can normally be controlled by observing the relays (yellow LEDs) inside
the relay box and listening to the change of sound as the valve operates. The
variation in flow is to be large enough for the vacuum unit motor current to
pass I
e min
and I
e max
.
9.10 Spare parts
Installation, repair and maintenance work must be carried out by qualified
personnel using only original Nederman spare parts. Contact your nearest
authorised distributor or AB Ph. Nederman & Co. for advice on technical
service or if you require spare parts. See also www.nederman.com.
Ordering spare parts
See www.nederman.com.
When ordering spare parts always state the following:
• Part- and control number (see the product identification plate).
• Detail number and name of the spare part (see www.nederman.com).
• Quantity of the parts required.
10 Recycling
The product has been designed so that component materials can be recycled.
Its different material types must be handled according to relevant local
regulations. Contact the distributor or Nederman if uncertainties arise when
scrapping the product at the end of its service life.
11 Acronyms and abbreviations
ASC
Anti Surge Control
CAS Compressed Air Switch
LED
Light Emitting Diode