Air Treatment
Compressed air quality
Option designation
Components
Characteristics
Abbreviation
da + dd
■
After-cooler
■ Cyclone separator
■ Filter combination
dry and technically oil-
free
F
da + dd + db
■
After-cooler
■ Cyclone separator
■ Filter combination
■
Heat exchanger
technically oil-free and
warmed
G
Tab. 41 Interrelation between compressed air treatment and compressed air quality
The compressed air outlets at the air distributor are labelled with the identifiers of com‐
pressed air quality.
2.7.2 Option ba
Low temperature equipment
2.7.2.1 Ambient conditions
Installation
Limit value
Maximum altitude amsl* [ft]
3280
Minimum ambient temperature [°F]
−13
Maximum ambient temperature [°F]
122
* Higher altitudes are permissible only after consultation with the manufacturer.
Tab. 42 Environmental conditions, low temperature equipment
2.7.2.2 Option bb
Coolant pre-heating
Coolant pre-heater
Value
Voltage [V]
230
Power [W]
1000
Tab. 43 Coolant pre-heater
2.7.3 Option ob
Trickle charging for starter batteries
Battery charger specification
Battery charger
Value
type
24V DC/10A
Charging voltage [V]
26.6
Charging current [A]
>0.5
Maximum charging current [A]
10
2
Technical Data
2.7
Options
18
Operator Manual Screw Compressor
M250 SIGMA CONTROL MOBIL
No.: 9_9570 07 USE