Evacuating The System - Kubota M8540 Workshop Manual

Hide thumbs Also See for M8540:

Table of Contents

M8540, M9540, WSM

(2) Evacuating the System

Evacuating the System

1. Discharge refrigerant from the system by R134a refrigerant

recovery and recycling machine. (Refer to "(1) Discharging the

Refrigerant" in this section.)

2. Connect the charging hose (red) (4) to the HI pressure side

charging valve and connect the charging hose (blue) (5) to the

LO pressure side charging valve.

3. Connect the center charging hose (green) (6) to a vacuum pump

4. Open both valves (3) and (9) of manifold gauge fully. Then run

the vacuum pump (7) to evacuate the refrigerant cycle. (For

approx. 15 minutes.)

5. When LO pressure gauge (1) reading is more than 750 mmHg

(299 in.Hg), stop the vacuum pump (7) and close both valves (3),

(9) of manifold gauge fully.

6. Wait for over 5 minutes with the HI and LO pressure side valves

(3) and (9) of gauge manifold closed, and then check that gauge

indicator does not return to 0.

7. If the gauge indicator is going to approach to 0, check whether

there is a leaking point and repair if it is, and then evacuate it

(1) LO Pressure Gauge

(2) HI Pressure Gauge

(3) HI Pressure Side Valve

(4) Charging Hose (Red)

(5) Charging Hose (Blue)

(6) Charging Hose (Green)

(7) Vacuum Pump

(8) Vacuum Pump Adaptor

(9) LO Pressure Side Valve

KiSC issued 09, 2008 A

Table of Contents