Full Gauge Controls MT-444E Faston Manual Download Page 4

[OfF,]

[On,,]

-

[OfF,]

[no,,]

20

sec.

[no,,]

0.1 (1)

20.0 (36)

ºC (°F)

2.0 (4)

0

1

-

0

[,f17]

[,f19] 

[,f16] 

[,f18]

[,f13]
[,f14]
[,f15] 

0.1 (1)

20.0 (36)

ºC (°F)

3.0 (5)

[,f32]

-50 (-58)

75.0 (167)

ºC (°F)

-5.0 (23)

[no,,]

999

min.

10

[,f29]
[,f30]
[,f31]

Evap. temp. to start defrost if 

[,f24]

 = 

[,,,1]

 (r1)

Evap. temp. to start defrost if 

[,f24]

 = 

[,,,1]

 (r2)

Evap. temp. to start defrost if 

[,f24]

 = 

[,,,1]

 (r3)

[,f25]
[,f26] 
[,f27]

1

999

H

12

[,f22]

[,f24]

[,f28]

[,f23]

It serves to increase the refrigeration time only in the first cooling cycle. In installations 
with several equipment it is possible to avoid demand spikes, causing the defrosts to be 
realized at different times, when assigning different values   in this function.

0

1

-

0

[no,,]

999

min.

[no,,]

0

2

-

0

Additional time at the end of the first refrigeration 
cycle

[,f20]

-20.0 (-36)

20.0 (36)

ºC (°F)

0.0 (0)

Condens

er high temperature alarm (S3) 

[,f57] 

=

 

[,,11]

[,f21]

[,f37]
[,f38]
[,f39] 

-50 (-58)

75.0 (167)

ºC (°F)

20.0 (68)

[,f33]

[,f34]
[,f35]
[,f36] 

[no,,]

999

min.

[no,,]

-50 (-58)

75.0 (167)

ºC (°F)

40.0 (104)

1

999

H

12

1

999

min.

30

Maximum  time  without  defrosts  if 

[,f24]

  = 

[,,,1]

[,f40] 

[,f41]
[,f42]
[,f43]

[,f45]

[,f46]

[no,,]

999

min.

15

[Off,]

[On,,]

-

[On,,]

[no,,]

999

min.

1

[,f44]

When  the  evaporator  temperature  (sensor  S2)  drops  and  reaches  the  value  set  in  

[,f29]

,

[,f30]

,

[,f31]

, the countdown to start the pre-defrost begins. During this 

stage,  if  the  temperature  remains  low,  the  pre-defrost  starts.  Otherwise,  if  this 
temperature rises above the set value, the system returns to the refrigeration stage.

When  starting  the  defrosting  process,  the  controller  will  only  activate  the  fan  to  take 
advantage of the gas residual energy.

Confirmation time of low temperature (sensor S2) to 
start the pre-defrost if 

[,f24]

 = 

[,,,1]

Pre-defrost Time (gas collecting)

When the evaporator temperature ( sensor S2) reaches the value configured by this 
function, the controller will initiate the countdown to defrost.

Determines how often defrost will be performed, which is the time counted from the end of 
the previous defrost.

[,,,0]

= Electrical defrost (by resistance), where only the defrost output is activated.

[,,,1]

= Hot gas defrost, whereby the compressor and defrost output are activated.

[,,,2]

= Natural defrost, where only the fan output is activated. 

[,,,0]

= Defrost started by time;

[,,,1]

= Defrost started by temperature.

Defrost type

Condition to start the defrost

Interval between defrosts if 

[,f24]

 = 

[,,,0]

(r1)

Interval between defrosts if 

[,f24]

 = 

[,,,0]

(r2)

Interval between defrosts if 

[,f24]

 = 

[,,,0]

(r3)

CELSIUS (FAHRENHEIT)

FUN

MIN

MAX

UNIT.

DEFAULT

DESCRIPTION

FUNCTION

This is the difference between turning refrigeration OFF and BACK ON in power-saving 
mode.

Control differential of power-saving setpoint (r1)

Control differential of power-saving setpoint (r2)

Control differential of power-saving setpoint (r3)

This is the value that will be added to the current preset setpoint after the time set in 

[,f64]

.

Example:  If 

[,f02]

=

[,,3.0]

(setpoint),

[,f10]

=

[,,2.0]

(differential)  and 

[,f16] 

=

[,,1.0]

(antifreeze), refrigeration will be turned off at

[,,4.0]

(

[,,3.0]

[,,1.0]

) and turned back on at 

[,,6.0]

(

[,,3.0]

[,,2.0]

+

[,,1.0]

).

Antifreeze safety differential temperature

Enables the evaporator temperature sensor (sensor 
S2)

The sensor S2 can be disabled. If this is the case, defrost will be initiated by time.

Digital filter operating mode 

[,,,0]

= The filter operates both when the temperature rises and when it falls; 

[,,,1]

= The filter operates only when the temperature rise. When the temperature fall, 

the response is immediate.

Intensity  of  the  digital  filter  applied  to  the  room 

sensor (sensor S1)

The value adjusted in this function represents the time ( in seconds) for the temperature to 
change by 0.1°C. A typical application for this type of filter is for ice cream and frozen food 
frezzers, as , when the door is opened, a mass of hot air reaches the sensor directly, 
causing a rapid increase in the measured temperature indication and often unnecessarily 
activating the compressor.

This  compensates  for  any  deviations  in  the  sensor  reading  due  to  replacement  or  a 
change in cable lenght

Local calibration of the room sensor ( sensor S1)

Local calibration of the evaporator sensor ( sensor 
S2)

Evap. temp. (sensor S2) to finalize the defrost (r1)
Evap. temp. (sensor S2) to finalize the defrost  (r2)
Evap. temp. (sensor S2) to finalize the defrost  (r3)

If the temperature on the evaporator (sensor S2) reaches the set valuem the defrosting 
process will end as usual, i.e. by temperature. This, it optimizes the defrosting process.

Room temperature to end the defrost (r1)
Room temperature to end the defrost (r2) 
Room temperature to end the defrost (r3)

If the room temperature ( sensor S1) reaches the set value, the defrosting process will 
end, avoiding an eventual unwanted rising of product temperature.

If the controller is configured to carry out the defrost based on temperature, this time 
works as a safeguard in situations where the evaporator temperature (sensor S2) does 
not  reach  the  programmed  values  in   

[,f29]

,

[,f30]

,

[,f31]

.  This  function 

determines the maximum time that the controller will wait for without carrying out the 
defrost.

This  function  is  used  to  set  the  maximum  time  for  a  defrost.  If,  within  such  period, 
defrosting is not terminated by temperature, a dot will start blinking on the bottom-right 
corner of the display (it needs to be enabled in 

[,f84]

), indicating that the defrosting 

process  has been terminated by the time  limit  rather than by temperature. This  may 
happen if the temperature set is too high, the time limit is too short, or the sensor S2 is 
disconnected or not connected to the evaporator.

Maximum defrost time (for safety) (r1)
Maximum defrost time (for safety) (r2) 
Maximum defrost time (for safety) (r3)

Locked temperature indication during defrost

This  function  is  intended  to  prevent  an  increase  in  room  temperature,  due  to  the 
defrosting process being displayed. During the defrosting process, the last measured 
temperature in the refrigeration cycle will be frozen on the display. The indication will be 
unfrozen when the temperature before defrost is reached or when the time set using this 
function is exceeded, after the start of the next refrigeration cycle (whichever comes first). 
If set to the value 

[,,,0]

, the temperature display will only be frozen at the defrost 

stage. This function can be disabled if set to 

[no,,]

.

Defrost when powering the controller

Allows a defrost to start when the controller is powered. For example, when the power 
supply returns (in the case of a power shortage)

Draning time

Time required for dripping, i.e. to drain the last drops of the evaporator. During this period, 
all outputs remain switched off. If you do not want this stage, adjust this time to  

[no,,]

.

Summary of Contents for MT-444E Faston

Page 1: ...nd 10 9 and 11 115 Vac 230 Vac 12 Vac dc 24 Vac dc DIGITAL REFRIGERATION CONTROLLER Control functions shutdown Functions lock Serial Programming Protection level On off light IP 65 FRONT Power saving mode Connector for quick coupling Buzzer Approximate consumption 3 4 VA NEW CONNECTION SYSTEM QUICK COUPLING FASTON and PUSH IN FAST CONNECTION Hold the wire near its end and insert it into the desire...

Page 2: ...icktouchorusethequickaccessmenu Item8 1 8 4 Silencing the alarm Tosilencetheaudiblealarm pressthe key quicktouch 8 5 Manual Defrost To start stop a manual defrost regardless of the schedule press and hold the key for 6s until the dEFr message appears Then release it The On message will appear when it has started and the OFF message when it has been stopped It can also be accessed through the quick...

Page 3: ...e sensor S1 temperature room is lower than the configured value for this function the compressor willbeturnedoff This is the control temperature when the power saving mode is active If the sensor S1 temperature room is lower than the configured value for this function the compressor will be turned off Limitspreventingtheaccidentalsetupofanexcessivelyhighorlowtemperaturesetpoint whichcouldresultinh...

Page 4: ...esandwhenitfalls 1 The filter operates only when the temperature rise When the temperature fall theresponseisimmediate Intensity of the digital filter applied to the room sensor sensorS1 Thevalueadjustedinthisfunctionrepresentsthetime inseconds forthetemperatureto change by 0 1 C Atypical application for this type of filter is for ice cream and frozen food frezzers as when the door is opened a mas...

Page 5: ...is function is to stop the evaporator fan until the room temperature approaches that listed in the project thus preventing a high temperature and suction pressure which can damage the compressor If the evaporator temperature surpasses that of the value the faz is turned off turning back on with a set hysteresis of 2 C 4 F It is a valuable resource when for example cooling equipment has been inacti...

Page 6: ...he LED indicator for the lightoutputisconstantlyoff 3 0 0 no 999 H no Operating Mode Lamp Output Alarm Door Resistance 2 2 no f67 f68 0 999 min 20 0 999 min 10 CELSIUS FAHRENHEIT FUN MIN MAX UNIT DEFAULT DESCRIPTION FUNCTION If the room sensor sensor S1 is disconnected or out of its measuring range the compressorwillturnonandoffaccordingtothesetupconfiguredinthesefunctions Compressor ON time in ca...

Page 7: ...fr Defrost LOC Blocked No No OFF Turnedoff disabled ON Turnedon enabled Refr Refrigeration SET asin Setting settingorconfiguration 12 OPTIONAL ITEMS Sold Separately Ecase protective cover It is recommended for the Evolution line keeps water from entering the back part of the instrument It also protects the productwhentheinstallationsiteiswashed NOTE Ecase is compatible with the use of small type F...

Page 8: ...he product is violated or repaired by any person not a member of the technical team of Full Gauge Controls Damage has been caused by a fall blow and or impact infiltration of water overload and or atmospheric discharge USE OF WARRANTY To make use of the warranty customers must send the properly packaged product to Full Gauge Controls together with the invoice or receipt for the corresponding purch...

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