Special Precautions When Dealing With R407C Unit; Service And Maintenance - Daikin UATYP60AGXY1 Installationshandbuch

SPECIAL PRECAUTIONS WHEN DEALING WITH R407C UNIT

•
R407C is a zeotropic refrigerant mixture which has zero
ozone depletion potential and thus conformed to Montreal
Protocol regulation. It requires Polyester oil (POE) oil
for its compressor's lubricant. Its refrigerant capacity and
performance are about the same as the refrigerant R22.
•
POE or PVE oil is used as lubricant for R407C compressor,
which is different from the mineral oil used for R22
compressor. During installation or servicing, extra precaution
must be taken not to expose the R407C system too long
to moist air. Residual POE or PVE oil in the piping and
components can absorb moisture from the air.
•
Refrigerant R407C is more easily affected by dust of
moisture compared with R22, make sure to temporarily
cover the ends of the tubing prior to installation.
Note is valid for Turkey only: The lifetime of our products is ten (10) years
SERVICE OF THE FILTER
• Remove any dust adhering to the filter by using a vacuum cleaner or wash in lukewarm water (below 40°C) with a
neutral cleaning detergent.
• Rinse the filter well and dry before placing it back onto the unit.
• Do not use gasoline, volatile substances or chemicals to clean the filter.
• Clean the filter at least once every 2 weeks. Or more frequently if neccesary.
Filter Position
The fi lters are mounted in front of the indoor heat exchanger.
* (Air fi lter : special order or fi eld supply)
UAT(Y)(P)60, 80, 100, 120, 150, 200A
Filter cover Service panel
removed when servicing
note: both side for unit 150, 200A

SERVICE AND MAINTENANCE

Filter
• No additional charge of compressor oil is permitted.
• No other refrigerant other than R407C.
• Tools specifically for R407C only (must not be used for
R22 or other refrigerant)
i) Manifold gauge and charging hose
ii) Gas leak detector
iii) Refrigerant cylinder / charging cylinder
iv) Vacuum pump c/w adaptor
v) Flare tools
vi) Refrigerant recovery machine
•
Filter-dryer must be installed along the liquid line for
all R407C air conditioners. This is to minimise the
contamination of moisture and dirt in the refrigerant
system. Filter-dryer must be of molecular sieve type. For
a heat-pump system, install a two-way flow filter-dryer
along the liquide line.
UAT(Y)(P)250, 300, 360, 420A
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Filter
Filter cover
removed when servicing