Replacing The Compressor Heater; Charging The Refrigerating Machine Oil - Daikin GYEQ20AN Service Manual

Replacement of Primary Parts
2.3

Replacing the Compressor Heater

Caution Check page 203 [1 Precautions to Take before Replacement] before proceeding with the
following steps.
[C2 compressor heater (located on the front side)]
1. Remove the strut located at the center of the front side.
2. Perform steps 2 through 7 of "Replacing the compressor."
3. Remove the front comp bracket.
4. Remove the compressor heater.
[Reverse the steps above to install the replacement]
∗ Make sure that the types and sizes (length in particular) of the bolts and nuts are correct.
[C1 compressor heater (located on the back side)]
1. Remove the strut located at the center of the back side.
2. Remove the drain filter.
3. Place wooden bases underneath the engine.
4. Set another wooden base on the right edge of the back comp bracket.
5. Remove the engine mount on the back left side.
6. Place wooden bases underneath the compressor.
7. Remove the V ribbed belt. (See page 213 [1.2 Periodic Inspection Procedure for the
8. Remove the back comp bracket.
9. Remove the compressor heater.
[Reverse the steps above to install the replacement]
∗ Make sure that the types and sizes (length in particular) of the bolts and nuts are correct.
2.4

Charging the Refrigerating Machine Oil

Caution Check page 203 [1. Precautions to Take before Replacement] before proceeding with the
following steps.
[If you have replaced the compressor:]
When the amount of remaining refrigerating machine oil in the old compressor is larger than the
initial charged amount (see page 206 [2.2 Replacing the Compressor]) of the replacement
compressor, charge the difference from the oil port (oil return line) after replacing the
compressor. When there is an oil leak, charge the leaked amount similarly.
[If you want to refill]
Charge the refill amount from the oil port (oil return line).
[If you have completely drained the refrigerating machine oil from the system:]
1. Perform evacuation through the high and low pressure side servicing ports or the stop
2. For GYEQ30AN, charge the whole amount from the oil port (oil return line). For GYEQ20AN,
[Refrigerating machine oil charged amount at the time of outdoor unit shipment]
Outdoor unit capacity
Charged amount (L) ∗1
∗1. Described on the outdoor unit model identification plate.
209
(Use 2 to 4 wooden bases sized approximately 45 × 700 mm along with 5 to 10 mm shims.)
∗ Fit the engine with the wooden bases from beneath the back comp bracket to the front
comp bracket, and fill the gap toward the engine oil pan with thin shims.
Outdoor Unit].)
valves (liquid and gas). (When performed through the stop valves, they must be opened)
Turn ON the outdoor unit evacuation mode when performing evacuation.
charge half amounts from both the oil port (oil return line) and the low pressure side
servicing port.
GYEQ20AN
7.6
SiAUY361411EA
GYEQ30AN
9.8
Replacement of Parts