Installation, use and Maintenance manual - ed. 04/14
20
SECTION 4
COMMISSIONING
L’AD 14 comes fully operational and ready for use. There are a number of options which are
enabled using the dipswitches mounted on the main control board inside the machine. These are
described in the previous section.
A commissioning sequence is built into the control system.
To initiate this sequence operate the test switch located on
the control panel for 3 to 8 seconds.
The cooler then follows the following sequence.
Stage 1
– Fan test
The fan runs at all five speeds commencing at speed 1 and ending at speed 5 and then stops.
Each speed is retained for approximately 4 seconds. The spare contact closes during this
sequence.
Stage 2
– Drain test
The drain valve opens for 7 seconds and then closes. Note that the Scavenge Pump
operates at the same time as the drain.
Stage 3
– Water valve test
Both water valves open for 17 seconds
Valve V1 stays open valve V2 closes for 5 seconds
Valve V2 opens and V1 Closes or 5 seconds
Both water valves then stay open
Stage 4
– Water level probe test
The water valves stay open and the cooler fills to level H (the third level)
The water valves then close
Stage 5
– Circulation pump test
When level probe H is reached the circulation pump runs for 10 seconds
Stage 6
– Overflow check
The HH level is manually lifted and the sequence is stopped. The cooler then drains down.
Alarm 2 is shown and retained.
By performing the above all of the key components are validated in sequence.
Note that the sequence can be started with the timer and alarm contacts open and in other
alarm conditions.
