Hach SIGMA 900, Руководство пользователя

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Page 48
Advanced Program Features
8837prg.fm
Section 5
5.14 Advanced Program Features
To enable one or more advanced program functions, the sampler must be in
one of the three standby states (
READY TO START
,
PROGRAM HALTED
,
or
PROGRAM COMPLETE
).
Refer to the programming instructions that explain the advanced
programming steps. The advanced program must be enabled in the
parameter entry mode.
REVIEW PROGRAM?
If you press the
YES
key, all programmed settings will appear on the display. Pressing the
NO
key
will place the sampler back into the standby state.
LOW BATTERY This message indicates that the external battery is low and requires recharging.
MEMORY POWER LOW This message indicates that the internal lithium battery is low and needs to be replaced.
PROGRAM STOPPED
DUE TO FULL BOTTLE
During composite mode, this message appears upon a full bottle condition. The program cannot
be restarted until the composite container is emptied and the float switch is in the lowered position.
BOTTLE IS FULL
If your instrument is programmed for single container composite sampling, this message appears
if the
START PROGRAM
key is pressed and the float switch is not in the lowered position. Because
the same circuit path is used for the composite full bottle float switch (composite mode) and
#1 bottle indicator (multiple bottle mode), this message will also appear if the
START PROGRAM
key
is pressed with the sampler programmed for single container composite with the distributor
assembly in place, and the arm in the #1 bottle position. To correct this situation, remove the
distributor, install the composite container retainer, and press the
START PROGRAM
key.
FULL BOTTLE or
PROGRAM HALTED
DUE TO FULL BOTTLE
The full bottle float switch is in the raised position due to a full composite container. To resume the
program, exchange the full container with an empty one. With the float switch in the lowered
position, the program will resume within one minute.
PURGE FAILURE
The liquid sensor detected the presence of liquid during the pump purge cycle.
1. Make sure that there are no loops in the intake tubing.
2. Make sure that the sampler is located above the sample source.
3. Make sure that the intake tubing slopes downward from the sampler to the sample source.
This message also appears if the liquid sensing circuit detects liquid within the first second that the
pump is pulling a sample (Pumping Sample cycle). The sampler “knows” that the minimum intake
tubing length is three feet, and that it is not possible for liquid to have traveled from the intake
strainer to the liquid sensor in such a short time. Again, a loop or coil in the intake tubing near the
sampler, or tubing that does not slope downward from the sampler to the stream may cause
incomplete drainage. The residual liquid may reach the sensor within the first second, causing the
PURGE FAILURE
message.
If site conditions do not permit sampler installation such that the intake tubing slopes downward
from the sampler to the stream, used the Timed Calibrate method for determining sample volume
(refer to 13a and 13c in
section 5.5 ).
DISTRIBUTOR ERR
After the
START PROGRAM
key is pressed, this message will appear if the distributor arm does not
locate bottle #1. Before pressing the
START PROGRAM
key again, be sure that the movement of the
distributor arm is not obstructed.
1. All bottles must be positioned correctly to avoid interfering with the movement of the
distributor arm.
2. The tubing must be properly routed through the distributor arm to the fitting located under the
control housing.
3. Check that the distributor is connected to the receptacle located under the control housing.
CABINET TEMP. FAULT
This message is displayed if the thermal control system fails to bring the refrigerated compartment
to the desired set point (i.e. 4 °C) within 30 minute.
Refer to trouble shooting
Message Description of Message