Kubota WSM L3560, Workshop Manual, Page: 763 / 801

CABIN
L3560, L4060, L4760, L5060, L5460, L6060, WSM
10-S20
Charging an Empty or Partially Charged System (Vapor)
This procedure is to charge the system through the
LO
pressure
side with refrigerant in the vapor state. When the refrigerant
container is set right side up, refrigerant will enter the system as a
vapor.
CAUTION
• Never open the HI pressure side valve of manifold gauge
while the engine is running.
NOTE
• Do not turn the refrigerant container upside-down when
charging the system by running the engine.
• Put refrigerant container into a pan of warm water
(maximum temperature 40 °C (104 °F)) to keep the vapor
pressure in the container slightly higher than vapor
pressure in the system.
1. Check that the
HI
pressure side valve (4) is closed.
2. Start the engine and set an approx. 1500 min
-1
(rpm).
3. Turn on the A/C switch.
Set the temperature control lever to
maximum cooling
position
and the blower switch to
HI
position.
4. Open the
LO
pressure side valve (5) of manifold gauge and the
can tap valve (3) on refrigerant container and charge the
refrigerant until air bubbles in the sight glass of the receiver
vanish.
5. After charging the specified amount of refrigerant into the
system, close the
LO
pressure side valve (5) of manifold gauge
and can tap valve (3), then stop the engine.
6. Check for gas leak with an electric gas leak tester. (See page
G-70.)
(Reference)
• Specified amount of refrigerant (total)
770 to 870 g (1.70 to 1.90 lbs) [Refrigerant R134a]
• Manifold gauge indication at fully charged system (at ambient
temperature: 30 °C (86 °F))
HI
pressure side
1.27 to 1.66 MPa (13 to 17 kgf/cm
2
, 185 to 242 psi)
LO
pressure side
0.15 to 0.20 MPa (1.5 to 2.0 kgf/cm
2
, 21 to 28 psi)
9Y1210824CAS0045US0
(1)
LO
Pressure Gauge
(2)
HI
Pressure Gauge
(3) Can Tap Valve
(4)
HI
Pressure Side Valve
(5)
LO
Pressure Side Valve
KiSC issued 03, 2016 A