AA01B.C01
Service instruction POPR-I
Page 5/7
Prepared by: ALJ/CML
Issued on: 01 March 1997
Approved by: SL
Rev. date: 12 March 2021
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
disconnection has been found. Among other things the disconnection can be caused by reduced mains 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
Regular inspection will ensure the mixer a long life at low costs. Oil change must be done every 6 months/4300
operating hours for POPR-I 150 rpm and every 6 months/2000 operating hours for POPR-I 300 rpm, however, min.
once a year. Under difficult operation conditions more often than every 6 months.
At inspection, the outer wear bush, pos. C, must be checked. There are two different kinds of outer wear bush: a wear
bush made of stainless steel and a type designed for particularly abrasive media. This is a stainless steel wear bush,
covered with a ceramic material. The ceramic coated type is characterized by its dark colour on the wearing surface.
With stainless steel wear bush
If the wear bush has deep wear traces, the propeller must be removed.
A spacer, pos. H, can be installed between the interior wear bush, pos. D, and the propeller in order to move the wear
area for the outer oil sealing ring, pos. G. 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 bush must be installed.
With ceramic coated wear bush
In this case, remove the propeller and check if the wear bush is mat/porous. If this is the case, the wear bush, pos. C,
is worn and must be changed. It is very important to check the oil sealing ring for wear with this system.
When the propeller is removed, check the inner wear bush, pos. D, for wear traces. This wear bush can be turned
once for a new wear area. The oil sealing rings, pos. F and G, (incl. springs) must be inspected for wear and replaced
if necessary.
A. Grease chamber
B. Grease nipple
C. Outer wear bush
D. Inner wear bush
E. Grease chamber
F.
Oil sealing ring
G. Utmost Oil sealing ring
H. Spacer
Summary of Contents for POP-1
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