Daikin GYEQ20AN, Руководство по обслуживанию

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Inspecting the Outdoor Unit SiAUY361411EA
189 Parts Inspection
1.23 Inspecting the Compressor
„
Checking for gas leaks
1. Using a leak tester, check if refrigerant is leaking from the drain tube.
2. Visually check if a significant amount of refrigerating machine oil is leaking from the drain
tube.
(Allowable amount of refrigerating machine oil leaks)
If the total operating time is between 0 and 1500 hours: 0.02 L (20 cc)/1500 hours
If the total operating time is over 1500 hours: 0.014 L (14 cc)/1500 hours
3. Using a leak tester, check if refrigerant is leaking from the compressor intake and discharge
flanges.
4. Check if the compressor clutch correctly turns ON/OFF using onboard checker channels 05
and 06.
„
Checking for "compressor lock"
1. With the compressor belt removed, make sure that the compressor rotates smoothly when
turned by hand.
2. Check if the compressor clutch correctly turns ON/OFF using onboard checker channels 05
and 06.
„
Inspecting the freezing cycle system after compressor replacement
1. Compressor (C/P) malfunctions are typically caused by a fault in the compressor itself but
also may be caused by a fault in the freezing cycle system.
2. After replacing the compressor, inspect the freezing cycle system by performing
measurements at the following measuring points with the onboard checker (in outdoor unit
data display mode) while the unit is running:
Fig. 5.1/ Freezing cycle check sheet (for reference)
Model Service agent
Person
in charge
S/#
Operating
time
Hr
Installed
date
Year /Month /Date Checked date
CH01
CH19
CH20
CH21
CH23
CH24
CH25
CH26
CH27
CH28
CH29
CH30
CH44
CH45
1
2
°C
°C
°C
°C
°C
°C
°C
°C
°C
Discharge
Intake
High-side
pressure PH
(Gauge value)
Low-side
pressure PL
(Gauge value)
MPa
MPa °C
°C
°C
°C
Discharge
temperature
(Measured value)
Saturation temperature
from low-side pressure value
: (as per Table 6.4) TL = Intake 5 (TS5)
temperature
(Measured value) TK =
Judgment: 10°C or higher
Discharge SH: °C
OK/NG
2.‡1*
Oil separator
temperature at outlet
(Measured value)
Degree of heating: SH = TK - TL
CH46
CH47
CH48
CH49
CH50
CH51
CH61
CH62
CH63
CH65
CH66
CH67
Discharge temperature check (Fluid compression check):
* The fluid is compressive if the discharge SH is 10°C or lower.
Discharge SH = Discharge temperature - High-side pressure saturation
temperature (converted value)
min
-1
MPa
MPa
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
°C
023307-00E01
Onboard checker values