Solar working station operation manual SR881
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►Press “+”“-”button to adjust concentration, adjustable
range (20
～
70
）
► Press “ESC” button to exit the menu or wait for 20
seconds to exit automatically, parameters are saved
automatically.
Note:
w
hen MEDT type of transfer liquid is “00
，
03”,MED% cannot be displayed.
4.5.5 INTV Pump interval function
Description:
This function is useful when collector sensor isn’t installed on collector (sensor installed on
the outlet pipe of collector). In order to measure the actual temperature of collector, within
the preset interval, solar pump is triggered for short time, so that the hot water inside
collector can flow to the pipe, where sensor is mounted, as the result, the actual
temperature of collector is measured. It is unnecessary to activate this function for all time,
you can use it within a preset schedule.( default set time is 06:00 ~20:00,not change)
During the period that solar pump is in operating, (the period of running time can be set by
paramete
r “tRUN”), controlled check the temperature increase of sensor, if the temperature
increases is less than 1
o
C, then solar pump is ceased automatically. After the break time
(interval can be set by parameter “tSTP”), same process repeats.
During the period that solar pump is in operating, if measured temperature increases is over
1
o
C, then the next interval is omitted, this omitting repeats when it caters condition and until
the switch-on temperature difference is catered or no more temperature change can be
measured. After that, pump interval function recovers to pulse rate-controlled mode.
Setup steps:
To access main menu FUN, then select submenu INTV, “INTV
OFF” displays on screen.
► Press “SET” button, parameter “OFF” displays and blinks, factory set is “OFF”
► Press “+”“-” button, to activate this function, “INTV ON”
displays on the screen.
► Press “ESC” button to exit the menu or wait for 20
seconds to exit automatically, parameters are saved
automatically.
