the vacuum pump even after a vacuum stage has been achieve
153. If the piping is up to 15m. in length run the vacuum pump at least 10 min. after a vacuum stage has been achieve
154. If the piping length is 15m. or longer then keep running it for at least 15 min. after that completely closed the low-pressure valve
155. Loosen the yellow host and turn off the vacuum pump
156. 5 min. after turning off the vacuum pump make sure the lower gauge needle this not raise about the position within when the vacuum pump put turn off
157. If it does, check again for any loose connection
158. Vacuum drying take 15 min during this time connect the power supply to the outdoor unit as well as the control wiring between the indoor and outdoor unit
159. Electric wiring
160. Remove the clamp to secure the wire sheet
161. Connect the power wiring
162. Next, connect the control wiring from the indoor unit to the outdoor unit
163. When doing so be sure to connect the control wiring so that the color of the wiring connected to the indoor unit terminal number 1, 2 and 3 correspond with those of the wiring connected to be the outdoor unit connection terminal 1,2 and 3
164. Refrigerant leak check
165. Let’s check for any refrigerant gas leak at the piping connection by applying the refrigerant pressure
166. Remove the cap from the smaller piping size stop out
167. Open the valve to 90 degree for 5 sec. and then completely close it again
168. Check for any leakage at the flare connection using an electric refrigerant leak detector or solve solutions