Daikin EWADC19C-XS Сервис мануал онлайн [297/304] 525303
Макгруп McGrp.ru
Задайте вопрос
Зарегистрироваться

Daikin EWADC19C-XS Сервис мануал онлайн [297/304] 525303

Daikin EWAD970C-SS Сервис мануал онлайн [297/304] 525208
ESIE10-01 Maintenance
Part 5 – Maintenance 5–7
3
5
1
5
Filter dryer
cartridge
replacement
procedure
Attention: Ensure proper water flow through the evaporator during the entire servicing period.
Interrupting the water flow during this procedure would cause the evaporator to freeze, with
consequent breakage of internal piping.
1. Shut down the relevant compressor turning the Q1 or Q2 switch to off.
2. Wait until the compressor has stopped and close the valve located on the liquid line.
3. Start up the relevant compressor turning the Q1 or Q2 switch to on.
4. Check the microprocessor display for the corresponding evaporation pressure.
5. When evaporation pressure reaches 100 kPa, turn switch Q1 or Q2 once again, to shut the com-
pressor down.
6. Once the compressor has stopped, place a label on the start-up switch of the compressor being
serviced, to avoid undesired start-ups.
7. Close the compressor suction valve (if any).
8. Using a recovery unit, remove surplus refrigerant from the liquid filter until atmospheric pressure
is reached. The refrigerant must be stored in a suitable and clean container.
Warning: To protect the environment, do not release removed refrigerant into the atmosphere. Always
use a recovery and storage device.
9. Balance internal pressure with external pressure by pressing the vacuum pump valve installed
on the filter cover.
10. Remove the filter dryer cover.
11. Remove the filter elements.
12. Install the new filter elements in the filter.
13. Replace the cover gasket. Do not allow any mineral oil onto the filter gasket so as not to contam-
inate the circuit. Use only compatible oil for this purpose (POE).
14. Close the filter cover.
15. Connect the vacuum pump to the filter and pull vacuum to 230 Pa.
16. Close the vacuum pump valve.
17. Recharge the filter with the refrigerant recovered during emptying.
18. Open the liquid line valve.
19. Open the suction valve (if any).
20. Start up the compressor turning the Q1 or Q2 switch.
Oil filter
replacement
■ Important: The lubrication system has been designed to keep most of the oil charge inside the
compressor. During operation, however, a small amount of oil circulates freely in the system,
conveyed by the refrigerant. The amount of replacement oil going into the compressor should
therefore be equal to the quantity removed rather than the amount stated on the nameplate. This
will avoid excess oil during the following start-up.
The quantity of oil removed from the compressor must be measured after having allowed the
refrigerant present in the oil to evaporate for a suitable amount of time. To reduce the refrigerant
content in the oil to a minimum, it is advised that the electrical resistances be kept on and that the
oil be removed only when it has reached a temperature of 35÷45°C.
■ Attention: The replacement of the oil filter requires careful attention with regard to the oil recovery.
The oil must not be exposed to air for more than about 30 minutes. In case of doubts, check oil
acidity or, if it is impossible to carry out the measurement, replace the charge of lubricant with fresh
oil stored in sealed tanks or as specified by the supplier.
The compressor oil filter is positioned beneath the oil separator (delivery side). Replacement is
recommended when its pressure drop exceeds 2.0 bar. The controller stops the compressor in an
alarm status when the filter pressure drop reaches 2.5 bar. The pressure drop across the oil filter is
the difference between the compressor delivery pressure minus oil pressure. Both these pressures
can be monitored through the microprocessor for both compressors.
Compatible oils: Daphne PVE Hermetic oil FCV 68D

Содержание

Похожие устройства

Скачать