EN
1205. 6755517_02
34
27. MAINTENANCE
27.1. EXTRAORDINARY MAINTENANCE
๎๎ฏ๎ฏ๎๎๎ฏ๎๎๎ถ๎๎ถ๎๎๎๎๎๎๎๎ฝ๎๎๎๎๎๎๎๎๎ต๎ถ๎๎ฏ๎๎๎๎๎๎ต๎ถ๎๎๎๎๎๎๎๎๎๎๎ถ๎
disconnected from the electric power supply mains.
Make sure there is no voltage present before operat-
ing. Periodic maintenance is fundamental to keep
๎๎๎๎๎ต๎ถ๎๎๎๎๎๎๎จ๎๎๎๎ฏ๎๎๎๎ธ๎๎๎๎ถ๎๎๎ต๎ถ๎๎๎๎๎๎๎จ๎ต๎ถ๎๎๎ฝ๎ถ๎๎ฏ๎๎๎ถ๎๎
๎๎ถ๎๎๎๎๎๎๎๎๎ฝ๎๎ถ๎๎๎ฝ๎จ๎๎๎๎๎๎ฅ๎๎
๎ฏ๎๎๎๎๎๎๎๎๎๎๎จ๎ฝ๎๎๎๎๎๎๎๎ถ๎๎๎ฏ๎๎๎ฝ๎๎๎๎๎๎๎๎ฝ๎ต๎๎๎๎๎๎๎ฝ๎๎๎๎๎๎๎๎๎ฏ๎๎
๎๎ฝ๎ถ๎๎๎ฝ๎ฏ๎๎๎จ๎ฝ๎๎๎๎๎๎ฅ
27.2. HYDRAULIC CIRCUIT
๎๎ฌ๎๎๎ผ๎ฅ
1. Refilling of water circuit
2. Cleaning the water filter
3. Control of pressure/flow switch
4. ๎
๎ฝ๎๎๎๎๎๎๎ถ๎๎๎๎๎๎๎๎๎๎ต๎๎๎๎ฅพ๎๎ฏ๎๎๎๎ฅฟ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎จ๎ฏ๎ฝ๎๎
rate to the
5. Evaporator is constant
6. The thermal insulation state of the hydraulic
piping
7. The percentage of glycol where necessary
27.3. EMPTYING THE SYSTEM
Before starting to drain the system, turn "off" the
unit
๎จพ๎๎ ๎๎๎๎๎ฌ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎ต๎๎ฏ๎ฝ๎๎๎ฅฌ๎๎๎๎๎ฝ๎๎๎๎๎๎๎๎๎๎
closed
๎จพ๎๎๎๎๎ถ๎๎๎๎๎๎๎๎๎๎ถ๎๎๎๎๎๎ฝ๎ต๎๎๎๎๎๎๎๎๎๎๎ต๎๎๎๎๎ถ๎๎๎๎ถ๎๎๎๎ฏ๎ฏ๎
the vent valves of the system and the correspon-
ding terminals.
๎จพ๎๎ฏ๎ถ๎๎๎๎๎๎๎ฝ๎จ๎๎๎๎ฝ๎ฏ๎ฝ๎ถ๎๎๎๎๎๎๎ต๎๎ฅฒ๎๎ฝ๎๎ถ๎๎ฝ๎จ๎๎๎๎๎๎ต๎ถ๎๎๎
๎๎ต๎๎๎ถ๎๎๎๎๎ถ๎๎๎๎๎ฅพ๎๎จ๎๎ถ๎ฝ๎๎๎๎๎๎๎๎๎๎๎๎๎๎๎ฏ๎๎๎ฝ๎ฏ๎ฅฟ๎๎ฝ๎๎๎จ๎ฝ๎๎๎ฝ๎๎๎๎๎
inconveniences, drain the chiller hydraulic circuit by
the corresponding knobs. If the system uses glycol,
this liquid should not be drained to the environment
because it is a pollutant. It must be collected and, if
possible, reused.
27.4. ELECTRICAL CIRCUIT
๎๎ฌ๎๎๎ผ๎ฅ
8. Safety efficiency
9. Electric supply pressure
10. Electrical Input
11. Connection tightness
12. ๎ณ๎๎๎๎จ๎๎๎๎๎๎๎ฝ๎๎๎๎๎๎๎ฝ๎ถ๎๎ฝ๎จ๎๎๎๎๎๎๎๎๎๎๎๎๎๎ฝ๎ต๎๎๎๎๎๎ฝ๎๎
resistance
27.5. COOLING CIRCUIT
๎๎ฌ๎๎๎ผ๎ฅ
13. State of compressor
14. Efficiency of the plate heat exchanger resistan-
ce if envisioned
15. Work pressure
16. Leak test for watertightness control of the
cooling circuit
17. Functioning of high and low pressure switches
18. Carry out the appropriate checks on the filter
dryer to check efficiency
27.6. MECHANICAL
๎๎ฌ๎๎๎ผ๎ฅ
1. Check the tightening of the screws the
compressors and the electrical box, as well as
the exterior panelling of the unit. Insufficient
fastening can lead to undesired noise and
vibrations
2. State of the structure.
Treat any shares if you encounter any oxidized
paint suitable to iminate or reduce the pheno-
menon of oxidation.
๎ค๎๎๎๎๎
๎พ๎๎ฅฎ๎๎๎
๎พ๎ฌ๎๎๎๎๎๎จ๎๎ฏ๎ฏ๎๎๎๎๎๎๎๎๎๎งฐ๎งญ๎งฌ๎๎๎๎๎๎๎๎ถ๎๎๎๎๎๎
inspected at the factory. Under normal conditions
they do not require Technical Assistance related to
control of refrigerant gas. Through time gas leakage
may be generated from the from the joints, causing
refrigerant to escape and discharge the circuit,
causing appliance malfunctioning. In these cases the
leakage points are to be discovered, repaired and
the Gas circuit is to be replenished, respecting the
December 28 1993 nยฐ549 law.
๎พ๎ฝ๎๎๎๎๎๎ฝ๎๎๎๎ต๎๎ ๎จ๎จก
1. Empty and dry the entire cooling circuit using
a vacuum pump connected to the low and
high pressure socket until 10 Pa is read on the
vacuum meter. Wait a few minutes and check
that this value does not rise above 50 Pa.
2. Connect the refrigerant gas cylinder or a load
cylinder to the socket on the low pressure
line.
3. Load the amount of refrigerant gas indicated
on the appliance features plate.
4. After a few hours of functioning, check that
the liquid indicator indicates the dry circuit
๎ฅพ๎๎๎๎ฅฒ๎๎๎๎๎ถ๎ฅฟ๎ฅ๎๎ฏ๎ถ๎๎๎๎๎๎๎๎๎๎๎ฝ๎จ๎๎๎๎๎๎๎๎ฏ๎๎ฏ๎ฝ๎๎๎ฅ๎๎๎๎๎
circuit must be emptied completely before
being re-loaded.
5. The R410A refrigerant must only be loaded in
the liquid state.
6. Functioning conditions that are different to
the nominal conditions can give rise to values
that are greatly different.
7. The sealing test or the search for leaks must
only be performed using R410A refrigerant
gas, checking using a suitable leak detector.
8. In the cooling circuit it is prohibited to use
oxygen or acetylene or other inflammable or
poisonous gases because they are a cause of
explosions or intoxication.
Provide that the disposal unit is implemented in
accordance with the rules in force in different
countries.
ATTENTION
We recommend that you include a
๎๎ฝ๎ฝ๎ฌ๎ฏ๎๎๎๎ต๎๎๎๎๎ถ๎๎๎ฅพ๎ถ๎ฝ๎๎๎๎ต๎๎๎ฏ๎๎๎๎ฅ๎๎๎ต๎๎
๎๎๎๎๎๎๎๎๎๎๎๎ถ๎๎๎๎ต๎๎๎๎ฅฟ๎ฅ๎๎๎๎๎๎๎๎๎ฏ๎ฏ๎ฝ๎๎๎๎๎ฝ๎
keep track of operations performed
unit, in this way will be more
easy to organize adequately
facilitating research and interven-
tions prevention of potential failures
the machine.
Return the booklet date, type of
๎๎ต๎๎๎๎๎๎๎๎๎๎จ๎ฝ๎๎ต๎๎๎๎ฅพ๎ต๎๎๎ถ๎๎๎ถ๎๎ถ๎๎
๎ฝ๎๎๎๎ถ๎๎๎๎๎๎ถ๎๎๎๎๎๎๎ฝ๎ถ๎๎ฝ๎๎๎๎๎๎๎๎๎ฅฟ๎ฅ
description of the measures imple-
mented.
ATTENTION
13
cooling circuits must not be
filled with a refrigerant other
than that indicated. Use a
different refrigerant gases can
cause serious damage to the
compressor.
28. DISPOSAL
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