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Firemiks AB
Instruction manual version: SPFA FM
P.O. Box 8155, 104 20 STOCKHOLM, Sweden
phone +46-8-551 196 10 - [email protected] - www.firemiks.com
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If the admixture performance has decreased over time to a too low
Level and none of the previous points could account for this, it is
possible that the vanes in the water motor have become too worn.
This is accelerated if the water is not free from contaminations (dirt,
sand, etc.). If so, contact us to order a set of spare part and for
instructions on how to replace the vanes.
8.4 Leakage in the unit piping or couplings:
a)
Check that all pipe couplings are properly tightened. It is important
to use two wrenches when doing this. One to tighten and one to hold
against.
8.5 Leakage between gable and middle part on the water motor:
a)
Check if any screws have become loose. If so, retightening them
with the correct tightening torque using a calibrated torque wrench in a
slow and deliberate manner. The correct tightening torques are as
listed in 10.1. If you ever find an original screw loose, please let us
know.
Note! Do not use higher torque as you may cause damage
or stretch the screw, so making the assembly less strong.
b)
If this is not sufficient the O-rings between gable and middle part
must be replaced. See 9.1 Water motor spare parts overview.
8.6 Leakage between connection pipe and middle part on the water
motor:
a)
See 8.5 a)
b)
If this is not sufficient the O-rings between connection pipe and
middle part must be replaced. See 9.1 Water motor spare parts
overview.
8.7 Water motor rotor and additive pump is difficult to rotate with crank
on the rotor shaft end:
a)
This is normal in a wet pipe system where a unit which is filled with
pressurized water and is attempted to be manually rotated. It is
possible to check rotation if there is no pressure in the system and
a drain valve according to section 4.3.13 is opened.
b)
Should however a unit that is dry also be difficult to rotate, check
the unit by putting the Selector valve Dosing / Flushing
(No. 4 on
Flow Chart)
. in flushing position and let the specified minimum flow
of water go through the unit for a couple of minutes, to flush out
foreign particles, etc.
Note! The selector valve handle must only
be positioned in its two end positions.
If there are no unusual
noises and the unit has an easy rotation after flushing, this is
sufficient.
