Commissioning
en
Installation and operating instructions Wilo-Atmos GIGA-N
63
▪
Check the direction of rotation of the motor while commissioning!
6.8.1
Fuse on mains side
Circuit breaker
The size and switching characteristics of the circuit breakers must conform to the rated
current of the connected product. Observe local regulations.
Residual-current device (RCD)
Comply with the regulations of the local energy supply company! The use of a residual-
current device is recommended.
If persons come into contact with the device and conductive fluids, secure the connec-
tion
with
a residual-current device (RCD).
6.8.2
Protective devices
WARNING
Risk of burns from hot surfaces!
The spiral housing and the discharge cover assume the temperature of the fluid dur-
ing operation. It may cause burns.
• Depending on the application, insulate the spiral housing.
• Provide corresponding guards.
•
Allow the pump to cool down at ambient temperature after switching it off!
• Observe local regulations.
CAUTION
Risk of property damage due to incorrect insulation!
The discharge cover and the bearing bracket must not be insulated.
7
Commissioning
WARNING
Risk of injury due to missing protective equipment!
(Serious) injuries can occur due to missing protective equipment.
• Do not remove the unit casings of moving parts (such as that of the coupling)
during machine operation.
• Always wear protective clothing, protective gloves and protective goggles when
working.
• Do not remove or disable the safety devices on the pump and motor.
• An authorised technician must check the functionality of the safety devices on
the pump and motor prior to commissioning.
CAUTION
Risk of property damage due to improper operation!
Operating outside of the duty point can impair the pump efficiency or damage the
pump. Operating with the shut-off device closed for more than 5 minutes is not re-
commended and generally dangerous in the case of hot fluids.
• The pump must not be operated outside of the specified operating range.
• Do not operate the pump with the shut-off devices closed.
• Make sure that the NPSH-A value is always higher than the NPSH-R value.
Summary of Contents for Atmos GIGA-N
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Page 440: ...el 440 WILO SE 2019 04 6 8 1 RCD RCD 6 8 2 7...
Page 441: ...el Wilo Atmos GIGA N 441 5 NPSH A NPSH R 7 1 7 2 Atmos GIGA N...
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