Emerson Quiet Kool 18S-EHVC24WD2V, User Manual, Page: 13 / 19

EVACUATION
Service Valves
11
Evacuate the Refrigerant Lines and Indoor Coil
Important
: Do not open the service valves until
the refrigerant lines and indoor coil leak check and
evacuation are complete .
STEP 1
- Evacuate until the micron gauge reads no
higher than 350 microns , then close the valve to
the vacuum pump .
STEP 2
- Observe the micron gauge . Evacuation is
complete if the micron gauge does not rise above
500 microns in one ( 1 ) minute .
Once evacuation is complete blank off the vacuum
pump and micron gauge , and close the valves on the
manifold gauge set .
1 MIN
.
Open the Service Valves
Important
: Leak check and evacuation must be com -
pleted before opening the service valves .
Important
: The Suction Service Valve must be opened
first BEFORE opening the Liquid Service Valve !
STEP 1
- Remove service valve cap .
STEP 2
- Fully insert hex wrench into the stem
and back out counterclockwise until valve stem just
touches the rolled edge ( approximately five ( 5 ) turns .)
STEP 3
- Replace the valve stem cap to prevent
leaks . Tighten finger tight plus an additional 1 / 6 turn .
STEP 4
- Repeat STEPS 1 - 3 for Liquid Service
Valve .
Cap
Rolled Edge to
Captivate Stem
Hex Headed
Valve System
Service Port
3
/
16
”
Hex Wrench
f
or Liquid Service Valve
5
/
16
”
Hex Wrench
f
or Suction Service Valve
Unit Side
of Service
Valve
Extreme caution should be exercised when opening
the Liquid Line Service Valve . Turn counterclock -
wise until the valve stem just touches the rolled
edge . No torque is required . Failure to follow this
warning will result in abrupt release of system
charge and may result in personal injury and / or
property damage .
0350
s n o r c i M
ON OFF
WARNING
!