User Interface; User Terminal; Buttons General Functions; Key Led Management - Mitsubishi Electric s-MEXT Serie Manual De Instalación, Uso Y Mantenimento

s-MEXT
•
that there are no leaks in the refrigerant circuit;
• that all shut-off valves are open.
1. Check that the system master switch is in the ON position.
2. Move the door locking electric switch (on the main panel) to OFF, open the panel
and open the internal electrical panel door.
DOOR LOCKING SWITCH
3. Check that the fan, electric heater (if applicable) and humidifier (if applicable) circuit
breakers are OFF.
4. Turn the magnetic switch that supplies the auxiliary circuits ON.
5. To identify this switch, see the "Wiring Diagram".
6. Close the internal electrical panel door, close the main panel and move the door
locking electric switch back to ON.
7. If these operations have been carried out properly, the microprocessor display will
be ON.
MICROPROCESSOR DISPLAY
INFORMATION
During this phase, the microprocessor indicates the presence of
alarms (thermal, fans, humidifier (if applicable), no flow, etc.),
because some circuit breakers are in the OFF position, and some
components are not active.
8. Press the Alarm key to disable the sound signal.
3.2

USER INTERFACE

3.2.1

USER TERMINAL

The user interface comprises:
•
132x64 pixel backlit LCD display.
•
6 backlit buttons.
The connection between the microprocessor board and the user terminal involve a 4-pole
telephone cable equipped with RJ11 connector.
The terminal is fed directly from the control board.
3.2.2

BUTTONS GENERAL FUNCTIONS

Key Name
[ALARM]
[PRG]
[ESC]
[UP]
[DOWN]
[ENTER]
UM_s-MEXT_01_Z_03_19_ML
Description
Displays the alarms and resets normal
operating conditions.
Accesses the main menu.
Goes back one level in the mask tree if
you are in the header masks, or returns
to the main mask.
Move around the masks and set control
parameter values.
Confirms entered data.
Key combinations activate a set of specific functions.
Keys
+ +
+ +
+
+ +
+
3.2.3

KEY LED MANAGEMENT

The key led indicators turn on in the following instances.
Key
4

START

4.1

MACHINE START

Commissioning must be carried out by a specialist Engineer, in the presence of the Installer
and an experienced Operator.
The specialist Engineer will test the equipment, carrying out checks, calibrations and
commissioning according to the applicable procedures falling under their responsibility.
The experience Operator must address questions to the specialist Engineer in order to
acquire the necessary information to be able to carry out the control and operation activities
that will fall under their responsibility.
4.2

CALIBRATION AND TUNING PROCEDURES

At the first machine startup the operation control devices may need calibration and tuning.
These activities - the main among which are indicated below - must be carried out by
specialist personnel:
•
Air flow calibration;
•
Cooling circuit parameter calibration;
•
Humidifier calibration (accessory);
4.3 START
1. Check maintenance clearances and safety distances.
2. Check and adjust the air flow.
3. Measurement of the electrical absorption of the fans.
4. Check the SUPPLY VOLTAGE: Check that the mains voltage does not exceed +/-
10% of the machine nominal value.
5. Check the DIRECTION OF ROTATION OF THE THREE-PHASE MOTORS (F3):
Check the direction of rotation of the three-phase motors. If it is wrong, reverse two
phases on the general door locking switch. Inverse rotation will cause abnormal fan
noise.
6. Check the BALANCING OF THE PHASES: Check that the balance between the
phases does not exceed 2%. Otherwise, contact the electricity distribution company
to solve the problem.
24
TRANSLATION OF THE ORIGINAL INSTRUCTIONS
English
Name Description
[ALARM
+ PRG + Increase or decrease screen contrast.
UP]
[ALARM
+ PRG + Increase or decrease screen contrast.
DOWN]
In the shared keyboard mode, this
[ALARM combination allows to share screenshots
+ ESC] and parameters among LAN connected
units.
[UP +
Press for 5 seconds to set the LAN
ENTER +
address on the user terminal.
DOWN]
With the user terminal set to 0, it allows
[ALARM
to configure the LAN address on the
+ UP]
control board.
Name Description
Fixed in case of alarm and flashing in
case of signal.
[ALARM] Once the [ALARM] key is pressed, the
led becomes fixed.
In lack of alarms/signals, the led is off.
When the unit is operating (ventilation
[PRG]
ON).
[ESC]
Upon turning on the unit, when pressing
[UP]
any key or activating an alarm/signal.
It will disengage after three minutes of
inactivity on the keyboard of the user
[ENTER]
terminal.
[DOWN]