6.2- Controls
1
AKO Microcontroller (1)
Refer to the attached microcontroller manual about this device operation.
Main switch (7)
Starts up (pos.1) or stops (pos. 0) the control panel.
As a safety measure, the door cannot be opened when the panel is operating.
Control selector (9)
It allows selecting the compressor control.
ŸPosition 0 (Stop): In this position the compressor will never start to operate.
The crankcase's resistor always activates when the main switch is in
position 1.
ŸPosition 1 (Pump down): The compressor starts to operate pump down (closed liquid solenoid)
until the low pressure switch stops it.
ŸPosition 2 (Run): The installation will operate autonomously controlled by the panel.
6.3- Indicators
High pressure switch indicator (3)
Indicates the activation of the high pressure switch.
Low pressure switch indicator (8)
Indicates the activation of the low pressure switch.
Thermistor alarm indicator (4)
Indicates the activation of the compressor's thermistor.
Current breaker alarm indicator (5)
Indicates the activation of the compressor's current breaker.
Compressor operating indicator (6)
Indicates the activation of the compressor.
IMPORTANT: Before starting up the installation, we recommend preheating the compressor's crankcase,
and to do so, first turn the control selector (9) to position 0 and then the main switch (7) to position 1.
After ten minutes you can start-up the installation turning the control selector to position 2.
7.- WIRING DIAGRAMS
Nomenclature
-X(n):.....................................................................................Connection terminals
-D3/-D4: .........................................................................................AKO Controller
-FI: ...............................................................Defrost resistor protective circuit breaker
-FM: .......................................................................Control protection circuit breaker
-H(n): ..............................................................................................Indicator LEDs
-K1: ................................................................................................Auxiliary relay
-K1M: ..........................................................Compressor contactor (or condenser unit)
-K2M: ...............................................................................Defrost resistor contactor
-Q1:......................................................................................Compressor protector
-S1:...................................................................................Operating mode selector
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