Picco R32
Inverter air/water heat pumps with axial fan
26
6. START UP
Before start-up:
1. Check that the diagrams and manuals of the installed machine are available.
2. Check that the wiring and plumbing diagrams of the plant the machine is connected to are available.
3. Check that the shut-off valves of the water circuits are open.
4. Check that the water circuit was filled under pressure and the air vented.
5. Check that all the plumbing connections are installed correctly and that all the indications on the rating plates are complied with.
6. Make sure that measures have been taken to discharge condensate.
7. Check the electrical connection and correct fastening of all the terminals.
8. Check that the electrical connections have been made according to standards in force, including earthing.
9. Voltage must match that on the unit’s rating plate.
10. Make sure that the electric voltage is within the tolerance limits (±5%).
11. Check that the electric heaters of the compressors are properly powered.
12. Check that there are no gas leaks.
13. Before switching the unit on, check that all panels are positioned correctly and well-fixed with screws.
CAUTION: The unit must be connected to the electric mains and placed in STANDBY (powered on) by closing the master
switch at least 12 hours before start-up. This will allow the heaters to adequately warm up the compressor crankcase (the
heaters are powered automatically when the switch is closed). The heaters are working properly if after a few minutes the
temperature of the compressor crankcase is 10-15°C higher than ambient temperature.
CAUTION: Check that the weight of the pipes does not bear upon the machine structure.
CAUTION: Never use the master switch to stop the unit temporarily. This must only be done to disconnect the unit from the
power supply for long downtimes (e.g. seasonal stops etc.). Furthermore power is missing, the crankcase heaters will not be
powered with the risk of breaking the compressors when the unit is switched on.
CAUTION: Do not modify the electrical connections of the unit so as not to immediately terminate the warranty.
CAUTION: Summer/winter operation must be selected at the start of the relative season. Frequent and sudden changes of
this operation must be avoided so as not to damage the compressors.
CAUTION: Upon initial installation and start-up, make sure that the machine works properly both in heating and cooling
mode.
6.1
SWITCHING ON THE UNIT
To supply power to the machine, turn the external handle of the disconnector to ON (“I”).
The unit display only switches on if the phase sequence is correct (inspection to be made when commissioning the unit). Wait at least 1 minute
between switching the unit off and back on again.
7.
INSTRUCTIONS FOR THE USER
Write down the unit’s identification data to be able to give it to the assistance centre when requesting an intervention.
The identification plate applied on the machine has all of the technical and performance data of the appliance.
In case of tampering, removal or deterioration, ask the Technical Assistance Service for a copy.
Tampering, removal and deterioration of the identification plate complicates installation, maintenance and request for spare
parts.
We recommend keeping track of the interventions carried out on the unit so as to make any troubleshooting easier.
In case of failure or malfunctioning:
•
check the type of alarm triggered to report it to the assistance centre;
•
contact an authorised assistance centre;
•
if requested by the assistance centre, immediately deactivate the unit without resetting the alarm;
•
request that original spare parts be used.
8. SHUTDOWNS FOR LONG PERIODS
The shutdown mode of the plant depends on the site of application and the time the plant is expected to be shut down. If the unit is equipped
with the antifreeze system, even when off (system on unit at “off” position).
The anti-freeze system remains in operation if the continuity of electrical supply to the appliances is guaranteed.
If the system is not to be used for an extended period of time it is recommended to empty the liquid from the system unless there is an adequate
amount of glycol.
To switch off the unit completely after having emptied the system:
•
Switch off the unit setting the switch of each appliance at"OFF".
•
Close the water valves.
•
Set the general residual current device at "OFF" (if installed upstream of the system).
Summary of Contents for Picco R32-140
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