Dosing unit GRANUDOS Type Flex-CPR Touch XL,
Type Flex-Touch and Type Flex-S5
Index: 01 Change date: 11/10/2023
OI No.: BA SW 022-01 Granudos Flex Dosiereinheit EN.docx
Page 55 of 68
7.1.2.3
Replacing the dosing motor (without dosing screw)
Procedure
a)
Loosen the threaded pin of the old dosing screw.
b)
Clean the front surface of the old dosing screw’s PVC adapter and cover it with silicon grease.
c)
Open the connection socket at the dosing hopper, loosen the terminals of the dosing motor
cable (brown - white), pull in a new motor cable and clamp tight: brown on brown, white on
white.
d)
Push the dosing screw on the shaft so that the threaded pin is located on the flat part of the
motor shaft.
e)
Press the dosing screw against the motor and fasten the threaded pin.
ATTENTION!
Do not fasten the threaded pin too tightly, as this may strip the PVC thread. A maximum of
¼ turn.
f)
Push the motor with the dosing screw back into the cleaned bracket, tighten the flange – not
too tight – and push the protective caps on the screw heads.
g)
Place a new O-ring on the dosing screw’s guide pipe, wrap with Teflon tape (approx. 3 layers),
grease and push the finished dosing motor unit into the bracket.
7.1.2.4
Replacing the dosing screw (without dosing motor)
Description
When replacing the dosing screw (without dosing motor), the seal in the dust protection cover should
also be renewed. The sealing washers made of EPDM and felt are included in the maintenance kit’s
scope of delivery.
Procedure
a)
Pull the dust cover (167) from the dosing motor, remove the old sealing washer EPDM (165)
and the old felt washer (166) and clean the shaft.
b)
Spread silicon grease on both sides of the new felt washer.
c)
Fill the bearing indentations at the dosing motor with silicon grease.
d)
First push the sealing washer EPDM on the shaft, followed by the greased felt washer, then
firmly reattach the dust cover.
e)
Remove the old O-ring (168) from the dust cover’s groove, insert a new O-ring, and apply ap-
prox. 3 layers of Teflon tape.
f)
Spread silicon grease on the front surfaces of the dosing motor/dust cover and the dosing
screw.
g)
Push the dosing screw on the shaft so that the threaded pin is located on the flat part of the
motor shaft.
h)
Press the dosing screw against the motor and fasten the threaded pin.
ATTENTION!
Do not fasten the threaded pin too tightly, as this may strip the PVC thread. A maximum of
¼ turn.
i)
Thoroughly close the thread bore with putty.
ATTENTION!
Without putty, the screw will heavily corrode within a short time and can no longer be loos-
ened. If the dosing screw or the motor must be replaced again at a later time, both parts
would have to be replaced together!
Summary of Contents for GRANUDOS Flex-CPR Touch XL
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