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VECTIOS
POWER TM
PJ
EN-51
●
Operators shall ensure that the unit is checked for leaks ad
minima according to the following frequency:
• t CO2e < 5 ......... not subjected
• t CO2e 5 to 50 ... every year
• t CO2e 50 to 500 every 6 months
• t CO2e > 500 ...... every 3 months
●
Where a leakage detection system has been installed the
frequency of checks is halved.
Note: These machines use R410A. It is essential that technicians
use equipment which is compatible with R410A with a working
pressure which is approximately 1.5 times higher than that of
units using R407C.
●
Always remember that refrigeration systems contain
pressurised liquids and vapours. All necessary provisions
must be made when the system is partially opened: ensure
the part of the circuit concerned is not pressurised.
●
Partial opening of the primary refrigerating circuit will
cause a certain quantity of refrigerant to be released into
the atmosphere. It is essential to keep the amount of lost
refrigerant as low as possible by pumping the charge and
isolating it in another part of the system.
●
The refrigerant and lubricating oil, and the low-temperature
liquid refrigerant in particular, may cause in
fl
ammatory lesions
similar to burns if they come into contact with the skin or eyes.
Always wear protective eyewear, gloves and other protective
equipment when opening pipes or tanks liable to have liquids
in them.
●
Store unused refrigerant in the appropriate containers and
limit the amounts stored in mechanical rooms.
●
Cylinders and tanks of refrigerant must be handled with care
and signs warning users of the related poisoning,
fi
re and
explosion hazards must be clearly visible.
Refrigerant that reaches the end of its life must be collected
and recycled in accordance with applicable regulations.
14 - MAINTENANCE
14.2 Servicing
It’s recommended to note down the operating readings and
perform the following checks at least twice a year and mandatory
after each time a unit is started for seasonal use.
Weekly checks
With the unit running at full capacity, check the following values:
●
LP compressor suction pressure and HP compressor
discharge pressure.
●
The oil level and its appearance. If the colour changes, check
the quality.
●
Also check whether the safety devices operate correctly.
●
Check the entire system for traces of water or oil under or
around the unit and for any unusual noises.
Monthly checks
●
Check all the values listed in the table “Operating readings“
on chapter 13.
●
Check for corrosion on all metal surfaces (chassis, casing,
exchangers, electrical cabinet, etc.).
14.3 access to the main components
●
Make sure that the insulating foam is neither detached nor
torn.
●
Check the coolants for any impurities which could cause
wearor corrosion in the exchanger.
●
Check the circuits for leaks.
●
Check whether the safety devices and the expansion valve(s)
operate correctly.
Annual checks
●
Carry out the same inspections as during the monthly checks.
●
Carry out an oil contamination test (every year or every 5000
hours). If acid, water or metal particles are found, replace
the oil in the circuit concerned and the dryer. Follow the
recommendations of paragraph 14.1.
●
Check the electrical connections to ensure they are tight and
in good condition.
●
Check the condition of the contacts and the current at full load
on all three phases.
●
Check the electrical box for water seepage.
N.b.: The intervals for cleaning are given as a guide and should
be adapted to each unit.
Condensate drainage pan
●
These units are equipped with a condensate drainage pan
sloped toward the drain.
Note: This pan is removable for easy cleaning in models 0420
to 0720. It is secured to the unit using 4 M6 Allen screws.
●
Check that the condensate pan is su
ffi
ciently clean.
●
Check that the drain is not clogged.
●
Cleaning of the pan can be done with water and non-abrasive
detergent.
Condensate pan
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