GL0014K Owners Handbook BioDisc BD, BE, BF, BG, ND, NE, NF, NG
Page 13
Volumes in litres (gallons in brackets)
a) Isolate power to the BioDisc at the Control Panel.
b) Undo the BioDisc cover latches and fold back the hinged cover sections as required to
gain access. Alternatively the covers can be completely removed. Hinged sections
should be folded back before lifting off.
c) Remove surface scum from the Primary Settlement Tank through the desludge ports [A]
on either side of the rotor.
d) Lower the sewage level by approximately 500mm. Use the ports alternately
UNIT Desludge
Primary
Settlement Tank
Final
Settlement Tank
Period
Min Max. Min Max
BD/ND 6 months
4,000
(880)
5,230
(1,150)
1,500
(330)
2,260
(500)
BE/NE 4 months
3,350
(740)
5,050
(1,110)
1,500
(330)
2,260
(500)
BF/NF 4 months
5,650
(1,245)
8,150
(1,800)
2,000
(440)
2,950
(650)
BG/NG 3 months
7,100
(1,565)
10,610
(2,340)
1,000
(220)
2,260
(500)