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 54 of 68
7.1.2.2
Maintenance of the dosing motor
Overview dosing motor
Key:
Procedure
a)
Use a small screwdriver, knife or a similar tool to scrape the putty from the thread hole of the
Threaded pin (163, page 52) on the dosing screw’s PVC adapter.
b)
Loosen the threaded pin with an Allen wrench SW 2.5 and pull the dosing screw from the shaft.
c)
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.
d)
Spread silicon grease on both sides of the new felt washer.
e)
Fill the bearing indentations at the dosing motor with silicon grease.
f)
First push the sealing washer EPDM on the shaft, followed by the greased felt washer, then
firmly reattach the dust cover.
g)
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.
h)
Spread silicon grease on the front surfaces of the dosing motor/dust cover and the dosing
screw.
i)
Push the dosing screw on the shaft so that the threaded pin is located on the flat part of the
motor shaft.
j)
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.
k)
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!
l)
Push the dosing motor into the cleaned motor bracket (24) and evenly screw tight with the
new screws M5x20; push on the protective caps.
Figure 40: Dosing motor
Important!!
Spread silicon grease on both
sides of the felt washer
Dosing motor
Silicon grease
Summary of Contents for GRANUDOS Flex-CPR Touch XL
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