Powerbuilt 647642 Manual Del Usuario página 2

• MAKE SURE YOU ARE FAMILIAR WITH AND COMPLY WITH ALL WARNINGS RELATING TO COOLING SYSTEM TESTING.
• PROTECTIVE GLOVES AND EYEWEAR ARE RECOMMENDED WHEN PERFORMING COOLING SYSTEM TESTING.
• MAKE SURE THE VEHICLE'S ENGINE IS NOT RUNNING WHILE PERFORMING A VISUAL INSPECTION OF THE COOLING SYSTEM OR WHILE CONNECTING THE
COOLING SYSTEM TESTER.
• DO NOT REMOVE THE RADIATOR CAP OR COOLANT BOTTLE CAP WHEN THE ENGINE IS HOT OR AT OPERATING TEMPERATURE. LET THE ENGINE COOL FIRST!
THE TEMPERATURE OF COOLANT IN A PRESSURIZED COOLING SYSTEM IS HIGHER THAN ITS BOILING POINT AT ATMOSPHERIC PRESSURE. REMOVING THE
CAP WHEN THE ENGINE COOLANT IS HOT MAY CAUSE HIGH-PRESSURE STEAM AND BOILING COOLANT TO ERUPT OUT VIOLENTLY, POSSIBLY SCALDING THE
PERSON REMOVING THE CAP AND NEARBY BYSTANDERS.
• WHEN REMOVING A RADIATOR OR COOLANT BOTTLE CAP, CAUTIOUSLY TURN IT TO THE SAFETY POINT. THIS ALLOWS PRESSURE TO BE RELEASED SLOWLY,
PREVENTING THE PRESSURE IN THE SYSTEM FROM ERUPTING. NEXT PUSH DOWN AND TURN THE CAP A BIT MORE TO DISENGAGE IT FROM THE STOP TABS.
• DO NOT EXCEED THE MAXIMUM PRESSURE RECOMMENDED BY THE VEHICLE'S MANUFACTURER WHEN PRESSURE TESTING A COOLING SYSTEM.
VISUAL INSPECTION PRIOR TO TESTING
CAUTION: Handle the testing pump with care. DO NOT subject the pressure gauge to unnecessary impacts or shocks as this may damage the gauge.
NOTE: The needle of the pressure gauge should rest in the "Zero" range when the pump is not in use. If the needle does not point to "Zero", the accuracy of the
gauge must be checked.
1. With engine cool, carefully remove the radiator or pressurized coolant bottle cap. Check the level of coolant, and if necessary add coolant so that the coolant is at
the recommended level.
2. Check the radiator, radiator hoses and heater hoses for visible signs of damage or leaks. Clean the surfaces of the coolant bottle or radiator filler neck where the
cap seals. The sealing surfaces must be in good condition.
3. Check radiator filler neck, examining the sloping cam surfaces. If the sloping cam surfaces are bent, the cap will not seal at the correct pressure or it may not seal at all.
4. Check the overflow tube. If it is dented or blocked, the system will not operate correctly. Make sure the tube is clean so that is can release pressure properly.
INTERPRETING STATIC PRESSURE TEST RESULTS
Needle On Gauge Holds Steady: If needle on the gauge remains steady for several minutes, there are no serious coolant leaks in the cooling system.
Needle On Gauge Drops Slowly: If the needle on the gauge drops slowly, there is a small leak or seepage. Examine all connections for seepage or small leaks. Inspect
the radiator, cooling system hoses (including heater hoses). A bright light may be helpful. After repairing leaks, test the system again.
Needle On Gauge Drops Quickly: If the needle on the gauge drops quickly, there is a serious leak. Examine the system for signs of a major leak. Repair any major
leaks. If the radiator is leaking, replace it or have it repaired at a radiator repair shop if necessary. If no leaks are visible, the leak may be internal.
INTERPRETING PRESSURE CAP TEST RESULTS
The cap must hold pressure below the specified limit. It must relieve any pressure that is above the specified limit. The pressure should hold just below the relief
pressure setting. A cap is considered satisfactory if it holds pressure in the test range for one to two minutes. If the needle on the gauge indicates that the cap is
loosing pressure rapidly, replace the cap. If the cap does not release pressure in the proper range, replace the cap.
WARNING!
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