Maintenance Piccolo Unit; Routine Maintenance; Refrigerant Charge - Tekno Point PICCOLO 12 Manuel D'installation

12. MAINTENANCE
PICCOLO UNIT

12.1 ROUTINE MAINTENANCE

Regular maintenance is essential to maintain the efficiency of
the unit both in terms of operation and energy.
The maintenance plan that the Technical Assistance
Centre should be observed annually, provides the following
operations and checks:
- Periodic cleaning of the water filter inside the unit SMALL.
- Periodic cleaning of the air filter (blower).
12.2 CHEMICAL CLEANING EXCHANGE
It is recommended to chemically wash the plate heat
exchanger every 3-4 years of operation.

12.3 REFRIGERANT CHARGE

The condensing units are loaded with R32 refrigerant gas
and tested in the factory.
Under normal conditions (length within the ranges shown in
the data sheets), thus they do not need any intervention on
the refrigerant control.
However, over time, small leaks may develop at the joints
leading to loss of refrigerant and draining of the circuit,
causing the unit to function poorly.
In these cases must be found by the leaks of refrigerant,
should be repaired and recharged refrigerant circuit.
The charging procedure is as follows:
- Empty and PICCOLO the entire refrigerant circuit using a
vacuum pump is connected to the outlet of high pressure to
the low outlet
- Connect the refrigerant cylinder to the gas outlet on the low
pressure line.
- Charge the quantity of refrigerant gas indicated on the
rating plate of the device in the liquid phase.
- Always check the undercooling values which must be
between 4 and 8 ° C and between 5 and 10 ° C (supercooling).
In the event of partial leaks, the circuit must be completely
emptied before being recharged.
The R32 refrigerant must be charged only in liquid phase.
- Efficiency safeties.
- Power supply voltage.
- Power consumption.
- Tightness of electrical and PICCOLO connections.
- State of the contactor / compressor / s.
- Verification of operating pressure and cooled.
To do this refer to the CAT.
Operating conditions other than nominal, may produce
considerably different values.
Seal testing or identification of leaks must only be performed
using R32 refrigerant gas, checking with a suitable leak
detector.
It is prohibited to load the refrigerant circuits with a different
refrigerant than the one indicated on the identification plate.
Use a different refrigerant may cause serious damage to the
compressor.
You must never be used in the cooling circuit, oxygen or
acetylene or other flammable or poisonous gases because
they can cause explosion or poisoning.
You may not use oils other than those indicated.
Use oils other than those indicated may result in serious
damage to the compressor.
You may not use tracer products for the detection of leaks in
the cooling circuit.
57
U INS
INSTALLATION MANUAL PICCOLO
CAT
25