Wilo Atmos GIGA-N, Installation And Operating Instructions Manual

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en Commissioning
64 WILO SE 2019-04
CAUTION
Risk of property damage due to condensation formation!
When using the pump in air-conditioning or cooling applications, condensate can
form, which could damage the motor.
• Open the condensate drainage holes in the motor housing at regular intervals and
drain the condensate.
7.1 Personnel qualifications
▪ Electrical work: A qualified electrician must carry out the electrical work.
▪ Operation/control: Operating personnel must be instructed in the functioning of the
complete system.
7.2 Filling and venting
NOTICE
The standard version of the Atmos GIGA-N pump has no air vent valve. The suction
line and pump are vented via a suitable venting device on the pressure flange of the
pump. An optional air vent valve is available.
WARNING
Risk of personal injury and property damage due to extremely hot or ex-
tremely cold pressurised fluid!
Depending on the temperature of the fluid, when the venting screw is opened com-
pletely, extremely hot or extremely cold fluid in liquid or vapour form may escape or
shoot out at high pressure. Fluid may shoot out at high pressure depending on the
system pressure.
• Make sure the venting screw is in a suitable, secure position.
• Always exercise caution when opening the venting screw.
Procedure for venting systems where the fluid level lies above the suction port of
the pump:
▪ Open the shut-off device on the pressure side of the pump.
▪ Slowly open the shut-off device on the suction side of the pump.
▪ To vent, open the venting screw on the pressure side of the pump or on the pump.
▪ Close the venting screw as soon as fluid escapes.
Procedure for filling/venting systems with a non-return valve, where the fluid level
lies below the suction port of the pump:
▪ Close the shut-off device on the pressure side of the pump.
▪ Open the shut-off device on the suction side of the pump.
▪ Fill fluid in via a funnel until the suction line and the pump are completely filled.
7.3 Checking the direction of rotation
CAUTION
Risk of property damage!
Danger of damage to the pump parts that rely on the fluid supply for lubrication.
• Before checking the direction of rotation and commissioning, the pump must be
filled with fluid and vented.
• Do not operate the pump with the shut-off devices closed.
The correct direction of rotation is indicated by an arrow on the pump housing. As seen
from the motor side, the pump rotates correctly in the clockwise direction.
▪ Remove coupling guard.
▪ To check the direction of rotation, disengage the pump from the coupling.