Piusi K900, Bulletin

Page: 14 / 31

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EN
This manual is the property of PIUSI S.p.A. Any reproduction, even partial, is forbidden.
Translated from Italian
H ERROR INDICATIONS
FOREWORD During the normal meter operation, unusual conditions may occur and
compromise its proper functioning. K900 electronics was designed to
recognize one of these conditions and inform the operator by means of a
display message. In these cases, an error indication will be displayed in-
stead of the total; the partial indication continues to increase while blinking.
The unusual working conditions recognized by the meter are the following:
Exceeding of the
maximum meter
flow rate
he flow rate of the fluid dispensed may exceed the max. allowed flow rate,
thus damaging the meter gears. Should this condition occur, “HI FLO” will
be displayed:
From one of the mea-
surement chambers
no pulses are found
The meter consists of two adjacent measurement chambers, held
together by a manifold. The fluid, by flowing through the appliance, rotates
the gears in the two chambers which, during their rotation, transfer, “vol-
ume units” of fluid. The exact measurement of the dispensed fluid is done
by counting the number of rotations made by the gears in both chambers
and consequently counting the transferred “volume units”. Each chamber
is associated with a transmission channel of “volume units”.
- chamber 1 channel 1 (CH1 WHITE wire)
- chamber 2 channel 2 (CH2 YELLOW wire).
Should the gears of one of the two chambers block or the counting elec-
tronics of one of the two chambers break down, counting of the dispensed
quantity would not be correct.
To make the user aware of this fault, “E1” is displayed:
“E1 CH1” means that “channel 1 has stopped”: in chamber 1 no fluid is pass-
ing because the gears are blocked or the electronics is faulty;
“E1 CH2” means that “channel 2 has stopped”: in chamber 2 no fluid is
passing because the gears are blocked or the electronics is faulty.
In one measuring cham-
ber more fluid is passing
than in the other
If the gears of one chamber are slightly obstructed, they slow down the
transfer of fluid which, in the other chamber, will flow more quickly. In this
conditions it will be displayed:
“E2 CH1”: fluid in chamber 1 is slower than fluid in chamber 2 CHECK
GEARS OF CHAMBER 1.
“E2 CH2”: fluid in chamber 2 is slower than fluid in chamber 1 CHECK
GEARS OF CHAMBER 2.