Checks, Regulations And Adjustments; Starting; How To Lock / Unlock The Keyboard - Technoblock LS Serie Manual De Uso

9

Checks, regulations and adjustments

Before turning the unit on, check that:
- locking screws are tight
- electrical connections have been carried out correctly.
In the event that the unit has been opened:
- no tools were left inside
- assembly is correct
- there are no gas leaks
- front cover is secured correctly
9.1

Starting

Before on, by the main switch, the machine, make sure that the unit is provided with compressor
preheating system. In this case, to execute the preheating, maintain connected to the main supply the unit
without on the unit through the main switch. In this way only the compressor crankcase heater is on.
Leave the machine in this condition for a few hours; the duration of this preheating phase depends on the
temperature of the place where the unit is mounted: with high external temperature maintain this phase for at
least 3 hours, with lower temperature the preheating-time is around 8÷10 hours.
At the end of the preheating, set the main switch in the "start" position or press the "ON/OFF" button of the
remote control panel.
N.B. If the instrument does not start, control if the unit is provided with a voltage monitor, in this case you have
to wait for the counting end of this device (about 6 minutes
Set the required cold room temperature.
-
ATTENTION
Medium temperature range :
Low temperature range :
SET POINT change: By pressing the key for 3s the set point value is displayed and the set point change
mode is entered: the SET led blinks. In order to change the value use the UP and DOWN keys.
Then, the new value can be stored either by pressing the "SET" key (the instrument restores temperature display)
or by waiting the programming exit timeout (15s).
Now the unit is operating and does not require any further programming. The refrigerating cycle is fully automatic
according to the factory-set parameters, which can be modified by authorised personnel only.
ATTENTION
24 hours after starting check evaporator state. If ice has formed, defrost frequency should
be increased. In low temperature units the evaporator condition should be checked every
week during the first month of operation.
9.2

How to Lock / Unlock the keyboard

Lock
 Keep pressed for more than 3'' the
 The (POF) message will be displayed and the keyboard will be locked. At this point it will be possible
only to see the set point or the Max o Min temperature stored.
 If a key is pressed more than 3'' the (POF) message will be displayed.
Unlock
 Keep pressed together for more 3'' the
+5 / -5°C
-18 / -25°C
and keys.
and keys, till the (Pon) message will be displayed.
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