RG66001652_REV.02
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LCW - LCR
STARTING UP FOR THE FIRST TIME
HOW TO START UP THE Chillers OF THE LCW SERIES FOR THE FIRST TIME
Water connections
•
Warning: the chiller is charged with HFC R407C – Group I EN 378 refrigerant (non-hazardous
substances) conforming to the requirements of EEC regulation 2037/00.
•
When making the plumbing connections, be sure to apply the inlet and outlet connections as
indicated. In particular, be very careful
not
to invert condenser and evaporator circuits.
Apply gate valves on the water side so that the chiller may be isolated from the plumbing system
and install a mesh filter (accessible for inspection) on both the evaporator and condenser sides.
•
Fill the water circuit, making sure to expel all the air present inside using the air valve situated on
the external brass connections at the top right of the storage reservoir.
Electrical connections
•
Put on the main switch, turn the ½-turn locking screws of the electric enclosure and open it.
•
Introduce the power cable 400/3/50+N through the hole provided on the left side of the unit and
secure it in place with the cable holder.
•
Connect the power supply and earthing wire to the terminals of the main switch.
•
Put off switch “QF” of the compressor so as to be sure it will not start running in the wrong
direction in the case of a phase sequence error.
•
Position the Local/Remote selector (SLR) situated at the top middle of the electric board on
LOCAL
and switch on the power by turning the main switch (IG) to ON.
•
Check the phase sequence relay situated in the middle of the electric control board to make sure
the phases are in the right sequence R-S-T; the
green
indicator light should go on: if it does not,
disconnect the power supply to the unit from the external distribution board, invert two phases
and repeat the check. IN NO CASE SHOULD YOU TAMPER WITH THE WIRING
DOWNSTREAM FROM THE MAIN SWITCH since this may alter the correct sequence of other
devices, e.g. pump(s).
•
Put the compressor switch “QF” back on.
•
Close the electric control board and lock it by means of the ½- turn locks.
Starting up
•
Check that all external cocks of the water circuit are open and water flows properly (the flow
alarm should not be triggered)
•
Put the main switch on the ON position.
o
The [external] pump will start immediately.
o
After 60 seconds the compressor will start
•
Check the water thermal differential (12-7°C to be detected by means of a thermometer on the
inlet and outlet water pipes of the unit).
•
Check that there are no leaks on the refrigerant side and water side.
•
Using all the screws supplied, close the unit.
Use
•
always consult the USER manual and the
μ
Chiller or pCO1 manual provided with the unit when
undertaking maintenance and/or advanced set-ups.
