Diagnostic Menu; Diagnostic Functions - Selecta PRO-NITRO A Manual De Instrucciones

MANUAL DE INSTRUCCIONES CODIGO 80189 REV D
J
.P. SELECTA s.a.u.
Jun/2018

11.4 Diagnostic menu

The analyser PRO-NITRO «A» includes an utility for checking and adjusting some
important parameters for properly working. It is mainly used for:
• Checking light level.
• Checking functions 8.1 without alarms.
• Checking colorimeter output signal level during titration and detecting problems.
Accessing to diagnostic utility:
1. The PRO-NITRO «A» must be OFF (Mains switch OFF).
2. Press «ENTER» key. Keep pressed and press mains switch ON.
3. After a few seconds «STIRRING» menu appear on the display. See attached
diagram.
Diagnostics utility operation:
For function selection, use the keys:
1. The keys
2. Press «ENTER» to start or stop the pointed function.
3. Press «ESC» to output from the diagnostics utility.

Diagnostic functions

Some of the functions on this menu do the same as others from the «TEST» menu,
except that here the alarms are disabled.
1. Check the light level
The display shows the light level: C0 = Level from 200 ±75.
2. Diagnosis of basic functions
STIRRING:
EMPTY COOLING:
TITRATION:
ADD 1ml:
PRIME:
EMPTY COLLECTOR: Stop / run collector empty system (pump + valve).
EMPTY SAMPLE:
STEAM COOLANT:
BORIC:
NaOH:
3. Colorimetric titration diagnostics
Using keys «
To run this diagnostic, a sample of ammonia sulphate must be prepared (See 8.2).
During the analysis the following figures appears on the display:
«Ls» Upper limit.
«Rd» Colorimeter reading.
Diagnostic: (normal values): Ls: [100 ... 250] , Li: [75 ... 150]
- The reading Rd,
- The reading Rd,
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«» and «» to point any function.
When the diagnosis functions are running
the alarm systems are DISABLED
Stop / run of collector stirrer.
Open/Closes the coolant (Tap) water.
See. 3 (below)
Orders to digital dispenser a 1ml volume.
Stop / run digital dispenser.
Stop / run sample tube empty system (pump).
Stop / run distillation (without titration)
Dispenses 50ml of fixative solution (Boric).
Dispenses 50ml of NaOH.
» y « » point «TITRATION».
with green colour must be above «Ls»
with red colour
CAUTION
«Li» Lower limit.
«D» Dispensed volume of HCl.
must be under «Li»
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Pag.: 65