Piusi K900, Инструкция по установке и использованию

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Installation, use and maintenance
7 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 con-
ditions and inform the operator by means of a display message. In these cases, an
error indication will be displayed instead 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 dam-
aging the meter gears. Should this condition occur, “HI FLO” will be displayed:
From one of the
measurement
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, “volume units” of fluid. The exact mea-
surement 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 electronics 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 passing 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 be-
cause the gears are blocked or the electronics is faulty.
In one measuring
chamber 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.