6.3.1
High pressure switch
EN
6.3.2
Low pressure switch
CONTROL DEVICES
High pressure switch (bar) R410A
High pressure switch (bar) R407C
Low pressure switch (bar) R407C
6.3.3
Control device of the phase sequences
7
Inspection, transport and positioning
7.1
78
High pressure switch stops the unit when the discharge pressure exceeds its pre-set limit value.
The reset is manual (by pressing the push-button at the top of the pressure switch located in the
electric panel) and can be done only when pressure is decreased below the device reset value
(see table below).
Low pressure switch stops the unit when the suction pressure decreases below its limit pre-set
value. The reset is automatic and it occurs only when pressure is higher than the device differential
resetting value (see table below).
ACTIVATION
Since the SCROLL compressors can function only in one rotating direction, this device controls
that the phases be correctly connected.
In case phases are not correctly connected, the machine will not start, a light will begin to flash in
the relay and on the panel the green light ALARM will be ON.
Warning: The machine must not be installed in narrow space, that could not allow an
adequate spread of the air coming from the outlet.
The external unit must not be installed in narrow spaces. The suction comes from the opposite side
where the motor fan is placed, while the discharge is set on the other side. The minimum distance
between the discharge and a wall is 3 meters.
Inspection
Upon receipt the unit, verify the integrity. The machine left the factory in perfect shape; any damage
must be immediately disputed to the conveyor and annotated on the delivery receipt before the
sign. Our company must be informed, within 8 days, of the entity of the damages. The customer
must prepare a writted declarations.
DIFFERENTIAL
42
9
29
7,7
0,7
2,2
M.CS620-00 ITA-ENG-FR 24/05/2021
CS
REINSERTION
Manual
Manual
Automatic