CA02A.C01
Service instruction: POP-I
Side 2/8
Executed by: HL
Issued on: 11 December 2002
Accepted by: SL
Rev. date: 22 November 2017
Introduction
The type POP-I is a horizontal submersible mixer.
During operation the mixer is locked by a conic stop console/stop bracket fixed to the guide pipe. The mixing takes
place by means of an electric motor coupled to the propeller by means of a planetary gear. The oil filled coupling/oil
chamber between motor and gear is in an open connection with the gear, so the oil cools and lubricates the gear
and the mechanical shaft seal between the oil chamber and the motor. The propeller is installed on the output shaft
of the gear.The exterior sealing system consists of a sealing ring and a mechanical shaft seal with a grease-
filled chamber in between.The following pages describe the connection and the maintenance of mixers type POP-I.
Application
This mixer is to be used for flow creation, mixing and homogenization of liquids with high or low dry matter content,
like e.g. wastewater, sludge and paper pulp, as well as chemical liquids and manure. The mixer can be placed in
square and circular tanks and may only operate when fully submerged below liquid level. When the mixer is in
operation, it must be fixated to the stop console, which is installed on the guide pipe. If the guide pipe is without stop
console, the mixer is suspended in the wire and is stopped by a stop bracket that is installed on the guide pipe.
If the mixer is to be applied for other purposes, contact Landia for advice.
Warning
Please note the following:
•
Only a certified electrician is allowed to connect the unit.
•
Prior to installation and start-up, check that the equipment is installed correctly to the mixer, as well as
the equipment in the tank.
•
Prior to the first start of the mixer, the propeller shaft must be rotated manually. This also applies if
the mixer has not been in operation for a longer period.
•
The electrical cable is always to be ensured by means of the chain to prevent the cable from getting
into contact with the propeller. If the mixer is not supplied with a chain, the cable is to be protected
against damage in another way, e.g. by means of a cable mesh.
•
It must be verified that the propeller cannot touch the tank under any circumstances.
•
The mixer must always
be fully below liquid level during operation.
•
Prior to hoisting the mixer for service/repair it is imperative that the electrical connection of the mixer is
switched off or locked. Prior to service/repair the mixer should be cleaned thoroughly.
•
When the mixer is hoisted or lowered, its cable and chain are always to be placed outside the work
area.
•
For service/repair of mixers installed in well/tank with explosion danger/toxic gases we refer to the
national safety directions as far as safety is concerned, e.g. concerning the toxic hydrogen sulphide.
Service/repair
To maintain a high operating safety and a long service life without unnecessary and expensive repair it is important
from the beginning to execute regular and preventive service. Maintenance should be executed according to the
intervals stated in the manual. Always follow the instruction carefully and only apply the parts described by Landia in
the spare parts list.
Landia can refer you to a service partner in your territory.
Please note
If spare parts not identical to the ones recommended are used at service/repair, the guarantee from Landia will be
voided. Spare parts can be ordered at Landia or your local distributor.
