Maintenance Tasks - salmson Rocsan lix Manuel D'installation Et Mise En Service

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8.2.2. Intervals for difficult operating conditions
For difficult operating conditions the maintenance intervals stated
should be shortened accordingly. In this case, please contact
Salmson customer service. If the units are to be used in difficult
conditions, we also recommend that you take out a maintenance
contract.
The following are considered difficult operating conditions:
• Large quantities of fibrous materials or sand in the fluid
• Turbulent intake (caused by air entering or cavitation,
for example)
• Heavily corrosive fluids
• Highly gaseous fluids
• Unfavorable duty points
• Operation at risk from water hammers
8.2.3. Maintenance tasks recommended to ensure smooth
operation
We recommend that the current consumption and operating volt-
age are checked regularly during all 3 phases. These values remain
constant during normal operation. Slight fluctuations are a result
of the composition of the pumped fluid. The current consump-
tion can assist in early detection and correction of damage and/or
faulty operation in the impeller, bearings and/or the motor. Larger
voltage fluctuations strain the motor winding and can lead to
failure of the pump. Regular checks can therefore prevent greater
damage from occurring later and reduce the risk of a total failure.
We recommend using remote monitoring for the regular checks.
Please contact Salmson customer service about this.
8.3.

Maintenance tasks

Before performing maintenance:
• Isolate the unit from the electricity supply and make sure it
cannot be switched on accidentally.
• Let the unit cool down and clean thoroughly.
• Ensure that all operation parts are in good condition.
8.3.1. Checking the insulation resistance
To check the insulation resistance, the power supply cable must
be disconnected. The resistance can then be measured with an in-
sulation tester (measuring voltage = 1000 V). The following values
may not be exceeded:
• For the initial start-up: The insulation resistance may
not be less than 20 MΩ.
• For further measurements: The value must be greater
than 2 MΩ.
For motors with an integrated capacitor, the wind-
ings must be short-circuited before checking.
If the insulation resistance is too low, moisture may
have penetrated the cable and/or the motor. Do not
connect the machine. Consult the manufacturer.
8.3.2. Turning the impeller
1. Lay the unit horizontally on a firm surface.
Make sure that the unit cannot fall over and/or slip
away.
2. Slowly and carefully reach into the hydraulic housing from
below and turn the impeller.
BEWARE of sharp edges!
Sharp edges can form on the impellers and hydrau-
lic opening. there is a risk of injuries! Wear the
necessary protective clothing, e.g. safety gloves.
8.3.3. Checking the oil level in the oil separation chamber
The same opening is used to empty and fill the oil separation
chamber.
BEWARE of injuries from hot and/or pressurized
lubricants!
After the unit is switched off, the oil is still hot and
under pressure. This can force out the plug, causing
hot oil to escape. Beware of injuries or burns! Let
the oil cool down to ambient temperature first.
Fig. 6.: Plugs
1 Plug
1. Lay the unit horizontally on a firm surface with the plug
facing upwards.
Make sure that the unit cannot fall over and/or slip
away.
2. Slowly and carefully remove the plug.
Caution: The lubricant may be pressurized. This can
force the plug out.
3. The lubricant must reach to about 1 cm below the plug
opening.
4. If there is not enough oil in the oil separation chamber,
top it up. When doing so, follow the instructions under
"Changing the oil".
5. Clean the plug, fit with a new sealing ring if necessary and
screw it in again.
8.3.4. Visual inspection of the power supply cable
The power supply line must be examined for bubbles, cracks,
scratches, chafed areas and/or crushed sections. If damage is
found, the unit must be shut down immediately and the power
cable replaced.
The cables may only be changed by Salmson cus-
tomer service or an authorized/certified service
workshop. The product may not be used again until
the damage has been rectified correctly.
8.3.5. Visual inspection of accessories
Check that accessories are fitted correctly and working properly.
Loose and/or defective accessories should be repaired immediate-
ly or replaced.
8.3.6. Visual inspection of the coating and housing for wear
The coatings or housing parts must not be damaged. Repair any
visible damage to coatings. If there is visible damage to the hous-
ing, consult Salmson customer service.
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