42
Adjustment of regulation and safety equipement
Commissioning
Pre-commissioning checks
Never commission a machine without first having read the
manual in full.
National regulations must be respected during the testing of
the installation.
Before starting the unit, perform the following checks:
- Compare the entire installation with the refrigerant and
electrical diagrams.
- Check that all the components comply with the specifications
in the diagrams.
- Check that all the documentation and safety equipment
required by applicable European standards is present.
- Check that the access and emergency routes are
unobstructed.
- Check the assembly of the connectors.
- Check the quality of the welding and seals and make sure
there is no leakage of refrigerant fluid.
- Check the direction of rotation of the fans
- Check the protection against mechanical damage.
- Examine any noise emission problems specific to the
installation.
- After opening the water circuit valves, make sure that the
water circulates in the chiller when the pump is operating.
- Bleed the air from the hydraulic circuit.
- Check the operation of the circulation controller
- Check that the fixing collars have been tightened correctly on
all the piping
- Check that all the electrical connections are tightened
correctly
- Leave the crankcase heaters of the compressors powered for
6 hours before operating the compressor (Except LD - LDC -
LDH 80 90)
Touch the crankcases to make sure that the heaters have been
functioning correctly (they should be warm).
- Check that current is arriving at the general connection and
make sure that the supply voltage is within the permitted limits
(-10% to +6% compared to the rated voltage).
Regulating and
safety devices
Function
Electrical symbol
Adjustment
Circuit 1
Circuit 2
External air sensor
Regu safety
B1
Exchanger water inlet sensor
B2
CONNECT
regulator
Exchanger water outlet sensor
B3
B10-B11
Coil sensor (ILD-ILDC-ILDH)
B4
B13
Outlet sensor
B7
B12
Exchanger refrigerant
inlet sensor
B8
B14
Electronic high pressure sensor
Regulation of condensing pressure
+ safety
BHP1
BHP2
Electronic low pressure sensor
Regu safety
BBP1
BBP2
Compressor safety
Safety
QG
HP pressostat
Safety device with manual reset
HP1
HP2
42b (R410A)
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