 |
|||
|
|
|||
|
|
|||
| ||||||||||
|
|
 TM 9-4120-425-14&P
REFRIGERATION SYSTEM SERVICING (DISCHARGING) - Continued
0049-00
SERVICE DISCHARGING
Rear Top of Unit
1.
Remove screws from service valve access cover.
2.
Remove service valve access cover.
3.
Unscrew hose connection protective caps from service valves.
WARNING
Death or serious injury may result if personnel fail to observe safety precautions.
Use great care to avoid contact with liquid refrigerant or refrigerant gas being
discharged under pressure. Sudden and irreversible tissue damage can result from
freezing. Wear thermal protective gloves and a face protector or goggles in any
situation where skin-eye contact is possible.
WARNING
Prevent contact of refrigerant gas with flame or hot surfaces. Heat causes the
refrigerant to break down and form carbonyl chloride (phosgene), a highly poisonous
and corrosive gas.
4.
Connect the charging manifold hoses to the manifold and air conditioner service valves.
5.
Attach a hose assembly to the center connection of the manifold.
6.
The open end of the center connection hose must be connected to the recovery/recycling unit that is located in a well
ventilated area.
WARNING
Discharge refrigerant in an open area and not around an open flame.
CAUTION
Do not permit the oil to escape from the unit. If oil is escaping, close the valve(s)
slightly. Do not permit the refrigerant to escape fast enough to form ice or frost on
either the lines or the valve.
7.
Slowly open the low pressure service valve to allow refrigerant gas to flow slowly out of the hose.
8.
Slowly open high pressure service valve to allow refrigerant gas to flow slowly out of the hose.
9.
Check the discharge hose for the presence of oil. Adjust (close slightly) valves if necessary to prevent oil discharge.
10. When gas stops flowing, close both service valves.
11. Go to WP 0050-00 for purging the system.
0049-00-2
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals