Automatic Operation; Alarms - Selecta PRO-NITRO S Manual De Instrucciones

INSTRUCTION MANUAL CODE 80188 REV E
6
Fig 5.2 Toggle key and indicator for
mode set.
3
1 2
Status indicator & alarms.
1. Heater ON
2. Water tank empty
3. Safety door open
4. Overtemperature on Steam genera-
tor.
J
.P. SELECTA s.a.u.
Jun/2018
• Distilling start: Press
Distillation starts and stops after the distilling time.
Distillation can be stopped, on any time, by pressing
Emptying sample tube: Keep press
•

5.5 AUTOMATIC operation

• Select AUTOMATIC mode. Key «6» toggles working mode. See Fig 5.2
• Set parameters according 5.3.
• Insert a sample tube (See 5.1) and an Erlenmeyer flask.
• Starting the sequence: Press
The following sequence will start:
Adding H3BO3 on the Erlenmeyer.
•
• Adding NaOH on the sample tube.
• Distilling until the distilling time.
Distillation can be stopped, on any time, by pressing
• Emptying sample tube: Keep press
tube will be emptied to the waste output.
Note: the parameters keep stored on the unit.

5.6 Alarms

4
In order to avoid dangerous situations or to protect the analyser life, some alarm
systems are provided on the unit:
(2) Low level of water on the steam generator alarm
Indicates that a low level of water was detected on the steam generator for a long
time. The microprocessor stops the distillation.
Probably the water reservoir is empty or the water does not have the suitable
conductivity.
(3) «Tube/Door» alarm
Safety door not closed or sample tube not inserted.
This alarm blocks the distillation and the NaOH adding.
(4) «Overtemp» alarm
An excess temperature on the steam generator has switched the safety thermo-
stat.
Block the distillation function.
Once is switched, it must be left to get cool for some minutes. Solve the root
problem that causes the switching and reset the safety thermostat by pushing the
central button. The safety thermostat is located on the electrical box, on the right
hand side. A cover must be removed.
The safety thermostat switching is due to low level of water on the steam genera-
tor, probably because the water reservoir is empty or water pump malfunction.
Autovía A-2 Km 585.1 Abrera 08630 (Barcelona) España
e-mail: [email protected] - website: http://www.jpselecta.es
(It can be modified without notice)
. See Fig. 5.1 key «9»
» for a few seconds.
.
for a few seconds. The sample
Tel 34 937 700 877 Fax 34 937 702 362
Page: 40
key.
.