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© Danfoss | DCS (sb) | 2019.12
4 | 520H11543 | AN212086434305en-000101
Adjustment:
Low Pressure Switch
Cut out on pressure fall
with automatic reset.
Scale plate directly indicates
the Cut In and the Differential
set points.
1.
Set Cut In by adjusting range screw.
Turn the screw clockwise to lower the set point.
2.
Then set Differential by adjusting differential screw. Turn the
screw clockwise to increase the Differential.
3.
The Cut Out setting equals the Cut In
less the Differential: CUT OUT = CUT IN - DIFFERENTIAL
Adjustment:
Condenser Fan Cycling
Scale plate directly indicates
the Cut In and the Differential
set points.
1.
Set Cut In by adjusting range screw.
Turn the screw clockwise to lower the set point.
2.
Then set Differential by adjusting differential screw. Turn the
screw clockwise to increase the Differential.
3.
The Cut Out setting equals the Cut In less
the Differential: CUT OUT = CUT IN - DIFFERENTIAL
Adjustment:
Low Pressure Switch
Cut out on pressure fall
with manual reset.
Scale plate directly indicates the Cut
Out set point. There is no pointer for
the Differential.
The Differential pressure value is
fixed and printed on the scale plate.
Adjustment:
High Pressure Switch
Cut Out on pressure
rise with automatic reset.
Scale plate directly indicates
the Cut Out and the Differential
set points.
1.
Set Cut Out by adjusting range screw.
Turn the screw clockwise to lower the set point.
2.
Then set Differential by adjusting differential screw. Turn the
screw clockwise to decrease the Differential.
3.
The Cut In setting equals the Cut Out
less the Differential: CUT IN = CUT OUT - DIFFERENTIAL
Adjustment:
High Pressure Switch
Cut Out on pressure
rise with manual reset.
Scale plate directly indicates
the Cut Out set point.
There is no pointer for the
Differential.
The Differential pressure value is
fixed and printed on the scale plate.
1.
Set Cut Out by adjusting range screw.
Turn the screw clockwise to lower the set point.
2.
The Cut In setting equals the Cut Out
less the Differential: CUT IN = CUT OUT - 60 psi
1.
Set Cut Out by adjusting range screw.
Turn the screw clockwise to lower the set point.
2.
The Cut In setting equals the Cut Out plus
the Differential: CUT IN = CUT OUT + 10 psi
NOTE:
Cut Out set point must be above absolute vacuum!
If the Differential is set too high then the switch
will not stop the compressor.
IMPORTANT:
The scale plate is only for reference and for more
precise setting a pressure gauge should be used.
IMPORTANT:
After installing and adjusting pressure switch run the
controlled equipment several times (at least three
cycles) at normal operating conditions.
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