Toshiba MMC-AP0151H, Руководство по обслуживанию

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8
Close fully balance pipes of
the outdoor units other than
unit for pressure adjustment
and unit with trouble.
6
Close fully service valve of the
gas pipe approx. 10 minutes
after the system has started.
9
Close service valve of the gas pipe with
checking the low pressure, and then
adjust the pressure to 0.12MPa.
10
When pressure of the troubled outdoor
unit (manifold gauge) and pressure of
the header unit become almost same,
close valve of the gas pipe fully.
11
When low pressure of the troubled outdoor unit dropped
below 0.10MPa, close fully service valve of the balance pipe.
Push the push SW05 to finish the pump down operation.
12
Turn off the main power supply of all the outdoor units.
Using a recovery device, the remained refrigerant in the
outdoor unit in which pump down operation has finished
and measure the amount.
7
The header unit is
selected as the
outdoor unit for
pressure adjustment.
Outdoor unit with trouble
[Setup for header unit]
9. As the low-pressure data is displayed on 7-segment display section, close the service valves of the gas pipe gradually
with confirming the pressure data, and then adjust so that the pressure becomes around 0.12MPa or equivalent.
10. When the manifold gauge pressure of the troubled outdoor unit has become almost same as with low pressure of the
header unit, close fully the service valve of the gas pipe of the unit for pressure adjustment after operation for a
while.
[Setup for the defective outdoor unit]
11. When the manifold gauge pressure of the troubled outdoor unit becomes below 0.10MPa, close fully packed valve of
the balance pipe and then push SW05 on the interface P.C. board to finish the pump-down operation.
12. Turn off the main power supplies of all the outdoor units, and use a refrigerant recovery device to recover the remain-
ing refrigerant in the outdoor unit which the pump-down operation has completed. Be sure to measure the recovered
refrigerant amount. (It is because addition of refrigerant corresponding to recovered amount is necessary after repair.)
All of the refrigerant recovery work has finished.
Return all SW01/02/03 of the header unit to (1/1/1) to complete the work.