Air Evacuation; Evacuation Instructions - mundoclima H9A Serie Manual De Instalación Y Usuario

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AIR EVACUATION

Preparations and Precautions
Air and foreign matter in the refrigerant circuit
can cause abnormal rises in pressure, which
can damage the air conditioner, reduce its
efficiency, and cause injury. Use a vacuum pump
and manifold gauge to evacuate the refrigerant
circuit, removing any non-condensable gas and
moisture from the system.
Evacuation should be performed upon initial
installation and when unit is relocated.
BEFORE PERFORMING EVACUATION
Check to make sure that both high-
pressure and low-pressure pipes between
the indoor and outdoor units are
connected properly in accordance with the
Refrigerant Piping Connection section of
this manual.
Check to make sure all wiring is connected
properly.
This unit must be installed by a professional according RD 795/2010, RD 1027/2007 and RD 238/213
MC

Evacuation Instructions

Before using the manifold gauge and vacuum
pump, read their operation manuals to familiarize
yourself with how to use them properly.
Low pressure valve
1. Connect the charge hose of the manifold
2. Connect another charge hose from the
97
MC
Manifold Gauge
Compound gauge
-76cmHg
Pressure hose /
Charge hose
Low pressure valve
Fig. 7.1
gauge to service port on the outdoor unit' s
low pressure valve.
manifold gauge to the vacuum pump.
7
Pressure gauge
High pressure
valve
Charge hose
Vacuum
pump

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