Output
Outputs 1 and 2 (KL6/KL7) are individual potential free changeover contacts
and can be directly connected to either DC or AC sources.
Output 3 (KL5/1 - KL5/2) is connected to mains power and is therefore
dangerous.
What happens on power up ?
Power failures
a) The unit runs a self check (start up). Display shows ”OFF” and whether it
is in a heating or refrigeration phase.
b) Short term power failures (<24 hrs) during automatic operation
No samples are taken, the inputs are not interrogated, however, the
internal clock continues to run during power failure.
On return of power the unit initiates a self check, any bottle changes
required are caught up. The sampler now continues to operate as
normally. If the power failure occurred during a sample cycle the water in
the dosing glass is then released into a bottle.
c) Long term power failures (>24 hrs) during automatic operation:
No samples are taken, the inputs are not interrogated, however, the
internal clock continues to run during power failure.
On return of power the unit initiates a self check, any bottle changes
required are not caught up. The sampler now continues to operate as
normally.
d) Long term power failures (500 hrs) have the following effect:
Internal buffer accumulator is discharged. An error message is displayed
(for message acknowledgement please see chapter “Problems and
solutions”).
Reset operational data again. The unit must then be connected to mains
power for at least 1 week (accumulator recharge). The sampler will
operate normally during this time.
On/off switching using the ON
and OFF push buttons
Switch off (operate OFF): This aborts the automatic cycle. Display shows
"OFF". The unit should not be switched off during a sample cycle, always
wait until the unit has completed the cycle. The sampler is switched off but
still connected to the mains supply therefore heating and refrigeration
continue to operate.
Switch on (operate ON): Display shows "ON". The unit can be restarted
(from first bottle) by operating the “AUT” button.
Electrical inatallation
asp-station d 2
12
