Daikin GYEQ20AN Service Manual page 235

SiAUY361411EA
11
Inspecting the exhaust gas cooler
Part name
Tools/materials Waste cloth
Step
(1) See "Basics" (page 213)
(2) Check for leaks
Inspecting the compressor for refrigerant/refrigerating machine
12
oil leaks and abnormal noise/vibration
Part name
Tools/materials Waste cloth, soap solution, leak detector
Step
(1) See "Basics" (page 213)
(2) Check for refrigerant
leaks
(3) Check for refrigerating
machine oil leaks
(4) Turn ON the power and
open the gas cock
(5) Start up the engine
(6) Check for refrigerant
leaks during operation
(7) Check for abnormal
noise/vibration
(8) Stop the engine
Maintenance / Service Data
1. Exhaust gas cooler gasket
2. Exhaust gas cooler body
3. Check if the exhaust drain water is stained with antifreeze fluid.
1. Check the flange connecting portions for leaks.
2. Check the intake/discharge pipe outlets for leaks.
3. Check each pipe for leaks from joints and pressure containers (such
as welded areas and fusible plugs).
1. Check the refrigerant circuit for any refrigerating machine oil sticking
to flange connecting portions, pipe joints, or other portions.
2. Check the compressor's mechanical seals for leaks.
3. Check if too much refrigerating machine oil has dripped from the
drain tube.
Operating Hours:
0 to 1500 hours: 0.02 L (20 cc)/1500 hours
Over 1500 hours: 0.014 L (14 cc)/1500 hours
See "Basics" (page 213)
Run the engine in normal operation mode.
See step (2).
Check for abnormal noise/vibration.
Stop the operation.
Task
Task
Drain tube
Drain case
Maintenance
Remarks
Visually check.
Remarks
• Use a soap solution or
leak detector.
Visually check.
023330-00E
Keep away from rotating
parts and hot parts.
Check for squeaking noise,
contact noise, and
excessive vibration
compared to its normal
operation.
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