444EXPRESSV01-03T
-14900
The
MT-444 eXpress
is a digital controller designed specifically for cooling. The touch screen keys can
select the desired Preset (3 options); enable/disable the energy saving mode, among other functions. It has a
normal operating setpoint and a power-saving setpoint for each one of the three Presets, with their respective
hysteresis.
While the
MT-444 eXpress
offers a default solution for most applications, the
MT-444 V-eXpress
offers a distinct characteristic, the power grid voltage meter. Using the True-RMS strain gauge, it is capable of
protecting the compressor against activations with improper voltage, whether it is high or low. Similarly, when
the power grid voltage is higher or lower than the maximum or minimum voltage setup, the compressor output
will be automatically switched off for protection.
- Beverage displays;
- Refrigeration cabinets.
- Power Supply:
230Vac ±10% (50/60 Hz) or on the version 115Vac ±10% (50/60 Hz)
- Setpoint Temperature:
-50 to 60ºC or -58 to 99ºF
- Operation Temperature:
0 to 45ºC (32 to 113ºF)
- Resolution:
0.1ºC between
-9.9 and 9.9ºC and 1ºC on the remainder of the range
1ºF on all the range
- Maximum current of the relays:
10(8) A/ 250Vac 1HP–compressor output
7A/ 250Vac – defrost output
3(2) A/ 250Vac – 1/10HP– fan output
2(2) A/ 250Vac – light output
- Digital input:
input for open-door detection (dry contact type)
- Operating humidity:
10 to 90% RH (with no condensation)
- Frontal dimension (with frame):
105x55x90 mm (WxHxD)
- Frontal cutouts dimension:
91x45 mm
- Base module dimension:
113x87.5x32 mm (WxHxD)
4. INDICATORS AND KEYS
5. BASIC OPERATIONS
5.1 Change Preset
To select the desired preset, press and hold the corresponding key for 2s, until the
[Pr]
screen appears, and
then release it.
5.2 Turning power-saving mode on/off
To turn the energy saving mode on/off press and hold the key for 2s, until the
[EC]
message appears, and
then release it.
5.3 Silencing the alarm
To silence the audible alarm, tap any of the keys
,
or .
$ % &
Tap
5.4 Manual Defrost
To start/stop a manual defrost, regardless of the schedule, press and hold the key for 10s, until the
[dF]
message appears, and then release it. The
[On]
message will appear when it has started and the
[OF]
message when it has been stopped.
%
Press and hold for 10 sec.
release
the key
On
Off
release
the key
On
Off
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
8
9
10
Power-Saving Mode LED indicator
Light LED indicators
LED indicator for pre-defrost and defrost (on) or draining (blinking)
Fan LED indicators
Compressor LED indicators
Power-Saving Mode Key
Temperature unit LED indicator
Plus Key / Preset 1
Set Key / Preset 2
Minus Key / Preset 3
DIGITAL COOLING CONTROLLER WITH
TOUCH SCREEN KEYS
VER. 01
Press and hold for 2 sec.
release
the key
Preset 1
Preset 2
Preset 3
5.5 Display process stage and the current desired temperatures
(setpoint)
To see which process stage is underway, press and hold the key for 4s, until the
[St]
message appears,
and then release it. The stage of the process in progress will be displayed, showing the desired temperature
(setpoint) in use, in relation to the current operating mode (normal/power-saving).
&
Displays the
current stage
Shows the current desired
temperature (setpoint)
release
the key
Fan delay
Cooling
Pre-defrost
Defrost
Draining
ex: (2.0ºC)
Press and hold for 4 sec.
NOTE:
If L3 is at 0, the first touch will be to enable the keyboard.
Press and hold for 2 sec.
1. DESCRIPTION
2. APPLICATION
3. TECHNICAL SPECIFICATIONS
Turn control
functions off
Function
blocking
Serial
Programming
Manual
Defrost
Audible
Alarm
Touch
screen
Power-saving
mode
WARNING
ACCESSORIES:
Only use original Full Gauge Controls accessories.
If you have any questions, please contact technical support.
AUTHORIZED SERVICE:
The installation or maintenance of the product must be performed by qualified professionals only;
BEFORE INSTALLING THE CONTROLLER, WE RECOMMEND READING THROUGH THE
ENTIRE INSTRUCTION MANUAL IN ORDER TO AVOID POSSIBLE DAMAGE TO THE
PRODUCT.
PRECAUTIONS WHEN INSTALLING THE PRODUCT:
Before performing any procedure on this instrument, disconnect it from the mains;
Ensure that the instrument has adequate ventilation and avoid installation in panels containing
devices that may cause it to operate outside the specified temperature limits;
Install the product away from sources that may generate electromagnetic disturbances such as:
motors, contactors, relays, solenoid valves, etc;
DUE TO YOUR CONSTANT EVOLUTION, THE FULL GAUGE CONTROLS RESERVES THE RIGHT TO CHANGE
THE INFORMATION CONTAINED IN THIS MANUAL AT ANY TIME WITHOUT NOTICE.
