Maintenance Measures - Wilo Rexa CUT GI Notice De Montage Et De Mise En Service

9.4.1 Maintenance intervals for normal conditions
2 years
▪ Visual inspection of the power supply cable
▪ Visual inspection of accessories
▪ Visual inspection of the housing for wear
▪ Function test of monitoring devices
▪ Oil change
NOTICE! If sealing chamber control is installed, the oil
is changed according to the indicator!
10 years or 5000 operating hours
▪ General overhaul
9.4.2 Maintenance intervals for use in sewage lifting units
When the pump is used in sewage lifting units inside
buildings or on plots of land, carry out maintenance in-
tervals and measures in accordance with
DIN EN 12056‑4!
9.4.3 Maintenance intervals for harsh conditions
Under harsh operating conditions, specified maintenance
intervals must be shortened if required. Harsh operating
conditions include:
▪ Fluids with long-fibre components
▪ Turbulent inlet (e.g. due to air intake, cavitation)
▪ Strongly corroding or abrasive fluids
▪ Heavily gas generating fluids
▪ Operation at an unfavourable duty point
▪ Pressure surges
When using pumps under hard conditions, it is recom-
mended to sign a maintenance contract. Contact cus-
tomer service.
9.5

Maintenance measures

WARNING
Attached macerator: sharp edges on the cut-
ting plate and rotating blade!
The macerator can cause amputation of limbs! Wear
safety gloves to protect against cuts and never reach
into the macerator!
WARNING
Hand, foot or eye injuries due to the absence
of protective equipment!
Danger of (serious) injuries during work. Wear the fol-
lowing protective equipment:
• Safety gloves for protection against cuts
• Safety shoes
• Closed safety goggles
Installation and operating instructions Wilo-Rexa CUT GI
Maintenance and repair
9.5.1
9.5.2
9.5.3
9.5.4
The following pre-requisites must be fulfilled prior to
starting maintenance measures:
▪ Pump cooled down to the ambient temperature.
▪ Pump cleaned thoroughly and disinfected (if required).
Recommended maintenance measures
Regular inspection of power consumption and the oper-
ating voltage in all three phases is recommended for
smooth operation. In normal operation, these values re-
main constant. Slight fluctuations depend on the charac-
teristics of the fluid. Power consumption can provide an
early indication of damage or malfunctions in the im-
peller, bearings or motor, which can be rectified. Larger
voltage fluctuations strain the motor winding and can
cause the pump to break down. Regular inspections can
therefore largely prevent major secondary damage and
reduce the risk of total breakdown. In this regard, it is re-
commended to use remote monitoring for regular in-
spections.
Visual inspection of the connection cable
Check connection cable for:
▪ Bubbles
▪ Cracks
▪ Scratches
▪ Abrasion
▪ Pinch points
If damage is identified on the connection cable, decom-
mission the pump immediately! Have the connection
cable replaced by Wilo customer service. Only operate
the pump up again once the damage has been properly
remedied!
CAUTION! Water may penetrate into the pump due to
the damaged connection cable! Water ingress leads to
total failure of the pump.
Visual inspection of accessories
Accessories must be checked for:
▪ Correct fixation
▪ Smooth function
▪ Signs of wear, e.g. cracks caused by frequencies
Any defects detected must be repaired immediately or
the accessories must be replaced.
Visual inspection of coatings and housing for wear
The coatings and housing parts must not show any signs
of damage. If there are defects, the following must be
observed:
▪ If the coating is damaged, it must be restored.
▪ Contact customer service if housing parts have worn out!
en
109