CA01A.C01
Service instructions, mixer type POP-I
Page 4/8
Landia Inc.
Issued on: 01 March 1997
Cary, NC 27513
Rev. date: 24. October 2018
Executed by: AJ/BNV
Accepted by: SL/KT
OPERATION
The mixers have thermal sensors as standard equipment.
Often the mixers are exposed to extremely difficult operation conditions. Therefore, it is important to connect
the thermal control. Burning of the motor due to overheating can thus be avoided. If the safety function has been
activated the mixer must not be re-started until the cause of the circuit disconnect has been determined.
Among other things the disconnection can be caused by low main voltage, a propeller blockage or an overheated
motor. The cooling period for overheated motors can be up to 1 hour.
THE UNIT MUST NOT OPERATE ABOVE LIQUID LEVEL.
CAPACITY
The capacity of the mixer will always depend on the consistency of the medium, but especially on the design of
the tank.
INSPECTION
With each inspection, service or oil exchange, lubricate the outer sealing system with grease according to
the instructions lateron in this paragraph.
Regular inspection will ensure the mixer a long life at low costs. The oil must be changed every 6 months/4,300
hours of operation, however, min. once a year. Under difficult operation conditions more often than every 6
months.
At inspection the outer wear bushing must be checked for wear and be replaced if needed.
There are two different kinds of the outer wear bushing: a wear bushing made of stainless steel and a type
designed for extremely wearing mediums. This is a stainless steel wear bushing, covered with a ceramic
material. The ceramic coated type is characterized by its dark colour on the wearing surface
.
With stainless steel wear bushing:
If the wear bushing has deep wear traces, the propeller must be removed.
A spacer can be mounted between the interior wear bushing and the propeller in order to move the wear area for
the exterior wear bushing. If it is impossible to move the wear area, either because it has been moved previously,
or the wear area is too wide, a new wear bushing must be installed.
With ceramic coated wear bushing:
Dismount the propeller and control if the surface is mat/porous. If this is the case the wear bushing is worn and
must be changed. It is very important to control the oil sealing ring for wear with this system.
Having dismounted the propeller, control the interior wear bushing for wear traces.
This wear bushing can be turned once for a new wear area.
The oil sealing rings (incl. of springs) must be controlled for wear and changed if necessary.
Allow for new oil sealing rings to settle firmly in the seat of the sealing flange for at least 15 min. before adding
grease through the grease nipple.