KAESER ESD.2C - Basic Requirements; Power Supply; Tab. 15 Fan Motor (Option K1); Tab. 16 Fan Motor (Option K2;K9)

ESD 442
Oil cooler Air cooler
Protection rating IP 55 IP 55
Motor bearing re-greas‐
ing interval [h]
4000 4000
Grease requirement,
each bearing [g]*
h = operating hours
* Copy the data from the motor nameplate into the table.
Tab. 15 Fan motor (option K1)
2.11.3 Option K2/K9
Fan motor
ESD 442
Rated power [kW] 0.3
Rated speed [min
-1
]
1460
Protection rating IP 54
Tab. 16 Fan motor (Option K2/K9)
2.12 Noise emission [dB(A)]
ESD 442
Sound pressure lev‐
el [dB(A)]
77
Noise pressure level as per ISO 2151 and the basic standard ISO 9614-2, tolerance: ±3 dB(A) at
maximum machine working pressure
Tab. 17 Noise emission [dB(A)]
2.13 Power Supply
Basic requirements
The machine is designed for an electrical supply according to National Electric Code (NEC)
NEC-670, particularly NFPA 79, edition 2007, section 4.3
The machine requires a symmetrical three-phase power supply.
In a symmetrical three-phase supply the phase displacement and voltages are equal for all phases.
This machine may only be supplied from a grounded TN or TT three-phase supply in which the
neutral point is grounded.
Connection to an IT network is not permitted without further measures being taken (ground leak
detection, specially designed frequency converter, etc.).
The machine may not be connected to a three-phase supply in which one of the phases is groun‐
ded, as this can lead to dangerous voltage surges.
The machine requires an industrial power supply that is separate from the public power supply.
2 Technical Specifications
2.12 Noise emission [dB(A)]
ESD_2C_10357405_10–LIN_00 E
Service Manual Screw Compressor
ESD 442/14 bar (abs) SFC SIGMA CONTROL 2
9