Midea R410A T3 Top-discharge Split Type Series 50Hz MCAC-UTSM-201501
83
Use a vacuum pump
Loosen and remove the maintenance orifice nut of valve A, and connect the filler hose
of the manifold valve to the maintenance orifice of valve A (Tighten both valve A and
valve B).
Connect the filler hose adapter to the vacuum pump.
Open the low (Lo) pressure handle of the manifold valve completely.
Start the vacuum pump to extract air. At the beginning of extracting air, slightly loosen
the maintenance orifice nut of valve B, check whether any air enters it (The vacuum
pump noise changes, and the multi-meter indicates from negative to 0.). Then tighten
this maintenance orifice nut.
Upon completion of vacuuming, tighten the low pressure handle of the manifold valve
completely and stop the vacuum pump. Keep extracting air for over 15 minutes. Check
whether the multi-meter points at -1.0×10Pa (-76cmHg).
Loosen the remove the square-head cover of valves A and B. After opening valves A
and B completely, tighten the square-head cover of valves A and B.
Remove the filler hose of the maintenance orifice of valve A, and then tighten the nut.
Procedure of using stop valve
Open the spool until it touches the stop block. Do not attempt to open further.
Use a spanner or a similar tool to tighten the bonnet.
Upon completion of installation, open all valves before trial run. Each unit has two valves of
different sizes located at the outdoor unit side. Of the two valves, one is gas valve and the
other is liquid valve. The procedure of opening / closing the valve is shown in following
Содержание MFA-76C(H)RN1
Страница 17: ...MCAC UTSM 201501 Midea R410A T3 Top discharge Split Type Series 50Hz 16 Pipe side view 4 Service Space Top view...
Страница 21: ...MCAC UTSM 201501 Midea R410A T3 Top discharge Split Type Series 50Hz 20 MTA 120CRN1 MTA 150CRN1...
Страница 35: ...MCAC UTSM 201501 Midea R410A T3 Top discharge Split Type Series 50Hz 34 MTA 120C H RN1 MTA 150CRN1...
Страница 36: ...Midea R410A T3 Top discharge Split Type Series 50Hz MCAC UTSM 201501 35 MHB 76C H RN1 MHB 96C H RN1...
Страница 44: ...Midea R410A T3 Top discharge Split Type Series 50Hz MCAC UTSM 201501 43 3 Dimensions 4 Service Space...
Страница 46: ...Midea R410A T3 Top discharge Split Type Series 50Hz MCAC UTSM 201501 45 6 Wiring Diagrams MFA 76HRN1 MFA 96HRN1...
Страница 47: ...MCAC UTSM 201501 Midea R410A T3 Top discharge Split Type Series 50Hz 46 MFA 76CRN1 MFA 96CRN1 MFAT 120CRN1...
Страница 109: ...MCAC UTSM 201501 Midea R410A T3 Top discharge Split Type Series 50Hz 108 E0 E1 E2 P1...
Страница 113: ...MCAC UTSM 201501 Midea R410A T3 Top discharge Split Type Series 50Hz 112 System low pressure protection...
Страница 154: ...Midea R410A T3 Top discharge Split Type Series 50Hz MCAC UTSM 201501 153 3 The wire connection...