Samsung MXJ-YA1509 Series, Руководство по установке

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3. 3.
Guideline for each installation process Guideline for each installation process
9. Vacuum drying 9. Vacuum drying
9-1. Purposes 9-1. Purposes
Using vacuum drying, the moisture inside the p Using vacuum drying, the moisture inside the product or pipe can be evaporated. roduct or pipe can be evaporated.
9-2. Procedure (HR Modulation Installation Standard) 9-2. Procedure (HR Modulation Installation Standard)
1) Before starting 1) Before starting
(1) Check if the second a (1) Check if the second air tight test (outdoor unit, MCU, indoor unit pipes a ir tight test (outdoor unit, MCU, indoor unit pipes are all connected.). re all connected.).
(2) After the second air tight test, check if the pressure is down to 1Mpa and check if there is any (2) After the second air tight test, check if the pressure is down to 1Mpa and check if there is any
leakage of nitrogen gas. leakage of nitrogen gas.
(3) Minimum two sets of R410a gauge manifolds, five or more manifold (3) Minimum two sets of R410a gauge manifolds, five or more manifold hoses, more than one vacuum hoses, more than one vacuum
pump. pump.
(4) Power up the indoor/outdoor unit. In case of HR, if the power is not on, then all the valves inside (4) Power up the indoor/outdoor unit. In case of HR, if the power is not on, then all the valves inside
the MCU are closed. the MCU are closed. So the vacuum may not be achieved by using the So the vacuum may not be achieved by using the S/V of the outdoor unit. S/V of the outdoor unit.
2) Connect the gauge manifold to achieve a vacuum for the following pipes. 2) Connect the gauge manifold to achieve a vacuum for the following pipes.
(1) Liquid pipe (1) Liquid pipe
(2) Gas pipe (2) Gas pipe
(3) High-pressure gas pipe (3) High-pressure gas pipe
(4) Oil Equalizing pipe (4) Oil Equalizing pipe
(If the manifold can’t achieve a perfect vacuum, then purge it with refrigerants.) (If the manifold can’t achieve a perfect vacuum, then purge it with refrigerants.)
3 3
) ) Connect the Connect the prepared two prepared two manifold g manifold gauges and auges and five five hoses hoses as as shown shown below below and and
connect to each service valve. connect to each service valve.