Vacuum Pump Adapter; Electric Gas Leak Tester; Canister Tap Valve - Kubota KX080-4 Workshop Manual

KX080-4, WSM

(3) Vacuum Pump Adapter

(4) Electric Gas Leak Tester

(5) Canister Tap Valve

Purpose of the Vacuum Pump Adapter
1. After the AC cooling system is vacuumed, when the vacuum
pump is stopped, there is a vacuum inside the hoses of the
manifold gauge, so the oil of the vacuum pump flows back into
the refrigerant charging hose. If the refrigerant system is
charged in this state, the vacuum pump oil remaining in the
refrigerant charging hose will go into the AC refrigerant system
along with the refrigerant. A vacuum pump adaptor equipped
with a solenoid valve is used to prevent this backflow of oil from
the vacuum pump. The role of the solenoid valve is to close
when electricity is flowing to the solenoid valve, cutting it off
from outside air and maintaining the vacuum; when the
electricity is cut off, the valve opens, bringing in outside air and
relieving the vacuum.
2. If this adapter is connected to the currently used R12 vacuum
pump, it enables the vacuum pump to be used for both R134a
and R12.
(1) Vacuum Pump Adapter
(2) Vacuum Pump
(3) For R134a
(4) Solenoid Valve
The old style R12 gas leak tester are not sensitive enough for
R134a and cannot be used. Consequently a new and very sensitive
electrical gas leak tester has been designed that can be used with
both R134a and R12.
[NOTE]
Halogenated Torch Gas Leak Testers
• Because this tester detects gas leaks based on the reaction of
chlorine in the refrigerant, it cannot detect R134a because it
does not contain chlorine.
(1) Electrical Gas Leak Tester
The canister tap valve used in recharging the refrigerant of the
AC system has to be used as follows.
1. Before attaching the canister tap valve to the refrigerant
container, rotate the handle (1) counterclockwise until the
needle of the valve is completely retracted.
2. Rotate the plate nut (disk) (3) counterclockwise to its highest
position and then screw the canister tap valve into the sealed
tap.
3. Rotate the plate nut clockwise as far as you can and fasten the
center charging hose to the canister tap valve.
4. Tighten the plate nut securely by hand.
5. Rotate the handle (1) clockwise to open a hole in the sealed tap.
6. To charge the system with refrigerant, turn the handle (1)
counterclockwise. To stop charging, turn the handle clockwise.
(1) Butterfly Handle
(2) Connector
5-S9
(5) Air
(6) For R12
(7) Plug Cap
RY9212001CAS0011US0
RY9212001CAS0012US0
(3) Disc
(4) Needle
RY9212148CAS0004US0
KiSC issued 08, 2015 A
CABIN