Husqvarna PG 690 Operator's Manual page 38

Problem
The product is not
easy to hold on to.
The product sounds
as if it increases the
speed too much.
The product makes
an irregular scratch
pattern.
38
Cause
Too small number of diamond tools are in-
stalled on the product.
The large grinding drive motor does not oper-
ate.
This can be caused by fault with motor or
fault with wire to the motor.
The belt is broken.
Only 1 phase comes into the product. The
product will not receive an error code and will
use <1 A motor current. The fan rotates slow-
ly.
The surface or the operation uses too much
of the product capacity.
The small grinding drive motor is not connec-
ted.
The small grinding drive motor does not op-
erate.
This can be caused by fault with motor or
fault with wire to the motor.
The surface is too thick or the diamond tool
configuration is incorrect.
The diamond tools are incorrectly attached or
attached at different heights on the grinding
discs.
The diamond tools are of mixed types
The head locks are loose or missing.
The resin tools are mixed or have unwanted
contamination.
The grinding discs are worn or damaged.
Solution
Increase the number of diamond tools to de-
crease load on the product and operator.
Make sure that the large grinding drive motor
is connected.
If the problem stays, speak to an approved
service agent.
If the belt is broken, let a service center re-
place it.
Turn one of the grinding discs by hand. If all
grinding discs rotate together, the belt is not
damaged. If 1 grinding disc rotates freely,
then the belt is broken.
Do a check of the power supply.
Adjust the speed of the motors and/or the
forward speed of the product across the
floor.
Make sure that the small grinding drive motor
is connected.
Make sure that the small grinding drive motor
is connected.
If the problem stays, speak to an approved
service agent.
Push down the handlebar slightly to lift the
grinding head from the surface when you
start the product.
Make sure that all diamond tools are installed
correctly and have the same height.
Make sure that all segments are the same di-
amond grit and bond. If the diamond seg-
ments are rough, space out the rough dia-
mond segments equally. Operate the product
on an abrasive surface until all segments
have the same height.
Make sure that all head locks are in position
and tightened.
Make sure that all resins are the same dia-
mond grit and bond and that there is no con-
tamination. To clean the resin tools, operate
them for a short time on a lightly abrasive
surface.
Examine the grinding discs for broken sec-
tions or too much movement.
1163 - 003 - 22.01.2020