Profroid SOPRANO 50, Operating Instructions Manual

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Connection to discharge
The pipe diameters must be determined in advance to ensure correct oil return and should not be based on the diameters of the
discharge header valves. It is usually dimensioned for fluid velocity less than 8 m/s (transcritical running).
The piping should always fall towards the unit, never away.
For double models, the link between the two coils should be made on-site.
Connection to gascooler return
This pipe must provide a downward drain for condensation into the bottle (subcritical running).
It is usually dimensioned for fluid velocity less than 1,8 m/s (transcritical running).
Pairing of several gascoolers mounted in parallel
We recommend that the circuits are well balanced to avoid individual gascoolers or a group of gascoolers mounted in parallel
becoming clogged
- Balancing by symmetry in the liquid line:
ELECTRICAL CONNECTIONS
General information
The machine is designed in accordance with EN60204-1.
All cabling on site must be made by qualified professional and must be in conformity with the legal standards in force in the relevant
countries and to EN60204-1.
Except for special operation, the nominal current must be 400 V for the power circuit.
Electrical motor wiring
In all cases please comply with the instructions shown on the gascooler connection box to.
Electrical motor protection
These must be in conformity with the standards applicable and be set according to the nominal current (displayed) for the speed used.
Control by fan cycling
All possible measures should be taken to prevent the motors short-cycling.
Number of cycles allowed: 20 start-ups per hour, allowing 30 seconds between 2 start-ups.