MasterCool 91498 Instruction Manual

WARNING UNIVERSAL VALVE CORE REMOVER/INSTALLER
With Patented Locking Mechanism for High Pressure Refrigerants
PLEASE USE CAUTION when removing valve cores from a pressurized system!
WARNING
Wear Safety Goggles
ALWAYS wear safety glasses and gloves!
VALVE CORE REMOVAL:
7/16"-20 (1/4"FL) Valve Core Connection (Fig. 1A)
Avoid Contact with Refrigerant
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1/2-20UNF /Japan Standard Valve Core Connection (Fig. 1B)
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1. Turn Valve Lever in the direction of flow so the shaft can go through the body.
2. Connect the valve core to the service port of the system.
3. Push the shaft towards the service port. Slowly and carefully rotate the shaft until the tip of the shaft
engages the body of the valve core.
4. Once the valve core is engaged, turn the locking nut clockwise and screw it on to the shaft connection
nut. This will allow one to remove the valve core without the pressure within the system disengaging the
shaft from the valve core.
NOTE: If the shaft tip does not reach the valve core, turn the locking nut counter-clockwise and
back the shaft out. Then try again.
5. Rotate the shaft counter-clockwise by turning the shaft knob.
WARNING: MAKE SURE THE SHAFT CONNECTION NUT DOES NOT START TOTURN AS YOU ARE
WARNING
TURNING THE SHAFT. THIS COULD CAUSE THE SHAFTCONNECTION NUT TO LOOSEN AND
REFRIGERANT WOULD LEAK OUT!
6. Continue rotating the shaft knob until you cannot turn the shaft anymore. DO NOT FORCE!
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7. Slowly loosen the locking nut from the shaft connection nut.
NOTE: If the valve core is correctly removed, the shaft will automatically travel outward do to the
pressure in the system. If it DOES NOT travel outward, either there is no pressure in the system or
the valve core was not removed.
Avoid Contact with Refrigerant
8. With the shaft pulled out all the way, CLOSE THE VALVE.
(Valve Lever perpendicular to the direction of FLOW)
WARNING: FAILURE TO CLOSE VALVE COULD CAUSE INJURY ANDWOULD RESULT IN A LOSS OF
WARNING
REFRIGERANT!
9. Loosen and remove the shaft connection nut from the valve body.
10. Remove the damaged valve core.
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Instruction Manual
91498
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VALVE CORE INSTALLATION:
English
7/16"-20 (1/4"FL) Valve Core Connection (Fig. 1A)
1/2-20UNF /Japan Standard Valve Core Connection (Fig. 1B)
1. Insert the new valve core onto the tip of the shaft.
2. Tighten the shaft connection nut to the valve body.
3. Turn Valve Lever in the direction of flow so the shaft can go through the body.
4. Push the shaft forward and immediately tighten the locking nut to the shaft connection nut.
5. Turn the shaft clockwise until the valve core is installed completely.
6. Loosen the locking nut and back up the shaft.
7. Once the valve core is in place, pull the shaft back and close the valve.
8. Remove the shaft from the valve body.
9. SLOWLY open the valve knob to assure the valve core is in place. If the valve is in place, the pressure in
the tool will dissipate quickly. If the valve core is not in place, quickly close the valve and try again.
CHARGING SYSTEM WITHOUT VALVE CORE
The system can be "QUICK CHARGED" after removal of the valve core. Using manifold gauge set with valve
lever in CLOSED position, connect the correct charging hose to the valve (Fig. 2A or 2B). OPEN the valve and
charge the system. After charging, CLOSE the valve and disconnect the hose. Proceed with valve core
installation.
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WARNING
Wear Safety Goggles
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