en – Original instructions
30
SCUBA – Additional Installation, Operation and Maintenance Instructions
Permitted tolerances for the supply voltage
Frequency Hz
Phase ~
No. of cond earth
UN, V ± %
50
1
2 + 1
220÷240 ± 6
3
3 + 1
230/400 ± 10
60
1
2 + 1
220÷230 ± 6
3
3 + 1
220/380 ± 5
8.7
Sound pressure
Unit position
LpA sound pressure level measured in free field at a distance of one metre, dB ± 2
Submerged
Non-applicable
Partially submerged
< 70
8.8
Materials in contact with the liquid
Component
Material
Sleeve, diffuser, casing, filter, plate
AISI 304 stainless steel
Bush support, impeller, lower head, upper head
Technopolymer