Emerson WORLD CLASS 3000 Benutzerhandbuch

• 1/4" supply line; maximum water pressure is 150 psi (1034kPa) 
• Size humidifier supply line for 1 gpm (3.8 l/m), with a minimum water pressure of 20 psi (138kPa)
• Do not supply de-ionized water to the humidifier 

Facility water and glycol quality remain a requirement throughout the life of the piping system. Fluid 

and piping system maintenance schedules must be established and performed. A local fluid mainte-

nance program must be established that will evaluate fluid chemistry and apply necessary treatment. 

A periodic leak inspection of facility and unit fluid piping is recommended. Refer to 5.4 - Glycol Pip-

Three-phase electrical service is required for all models in either 208, 230, 460, or 575 V, 60 Hz; or 

200, 230, or 380/415 V, 50 Hz. Electrical service shall conform to national and local electrical codes. 

Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer to elec-

trical schematic when making connections.
A manual electrical disconnect switch should be installed within 5 feet (1.6 m) of the unit in accor-

dance with codes, or a factory-supplied disconnect switch may be factory mounted within the unit 

accessible from the exterior.

Risk of improper scroll compressor installation. Could cause poor performance and 

compressor damage.
Three-phase power must be connected to the unit line voltage terminals in the proper 

sequence so that the scroll compressor rotates in the proper direction. Rotation in the wrong 

direction will result in poor performance and compressor damage. Use a phase sequence and 

motor rotation sensor to ensure that the three-phase power is correctly connected and the 

compressor is rotating properly.

Risk of electric shock. Can cause injury or death.
Potentially lethal voltages exist within this equipment during operation. Observe all cautions 

and warnings on unit and in this manual.
The Liebert iCOM microprocessor does not isolate power from the unit, even in the “Unit Off” 

mode. The only way to ensure that there is NO voltage inside the unit is to install and open a 

remote disconnect switch. Refer to unit electrical schematic.