6.2.1. General (monthly or every 500 operating hours)
Keep the agitator clean (otherwise cooling is impaired).
Foreign bodies that have been picked up must be removed
from the agitator. The connection cable must be examined
for abrasions, traction marks, buckling and other damage.
If the cable is defective there is a danger that the agitating
medium may enter the agitator and cause damage. A de-
fective cable must be immediately replaced by the manu-
facturer or an authorized workshop. The agitator must be
checked for damage to the corrosion protection coating
and for leaks.
6.2.2. Electric motor
The power consumption should be checked on a monthly
basis in all 3 phases. Damage to the motor, transmission
and storage can be recognized by the current consump-
tion.
Lubrication: The roller bearings are lubricated for their
lifespan (in case of noise, the bearings must be replaced
at the manufacturer's factory). The oil in the oil chamber
should be changed after each 6000 operating hours.
Oil condition: Lay the agitator horizontally, so that one of
the oil chamber screws is on top. Remove the screw and
remove a small amount of oil. If the oil is cloudy or milky,
this indicates a defective shaft seal. In this case, have the
condition of the shaft seals checked by a HOMA dealer or
the customer service department. Replace missing parts.
Insulation test: If the insulation resistance is less than 2
megaohms, the submersible mixer can not be turned on.
(Measuring DC voltage 1500 V)
6.2.3. Stirring Propeller
Inspection: Inspect the stirring propeller periodically.
Remove random wound foreign bodies such as twines,
cords, etc. They can cause uneven running and thus cre-
ate strong vibrations in the system and can lead to dam-
age on the mixer components. With uneven running, the
stirring propeller must be cleaned.
6.3. Change of oil
Change oil only with motor at operation temperature.
Note that the mixer must be in a horizontal position
when changing oil.
When releasing the oil level screws, excess pressure may
escape from the oil chamber or the gearbox. Only remove
the screws completely after the pressure was equalized.
The thread and the magnets (on the gearbox) of the
screws must be clean before screwing them back on.
The sealing rings must be always replaced with new parts.
34 | ENGLISH
6.3.1 Oil chamber
Oil: biodegradable Shell Ondina 917 . Used oil must be dis-
posed of properly. The oil capacity is:
HRS07 - 27
HRS29 - 32
CHRS07 - 25
CHRS27- 32
Procedure:
1.
Loosen the oil drain plug
2.
Drain oil
3.
Fill prescribed type and quantity of oil
4.
Screw in the oil drain plug
Oil screw
0.7 l
1.0 l
0.8 l
1.1 l