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OPERATING INSTRUCTIONS
1. OIL FILL
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This vacuum pump has been tested at the factory and shipped with only trace amounts of oil. OIL MUST BE
ADDED BEFORE OPERATING! Failure to add oil will damage cartridge and void warranty!
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a. Make sure the oil drain valve located below the front casing is closed
before attempting to add oil. (See ref. #4 in parts breakdown.)
b.Remove the large brass oil fill plug from the top of pump and insert the oil bottle into the fill port.
(See ref. #5 in parts breakdown.)
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c. Slowly add oil until oil level rises to the top of the Oil Level Line. Do not overfill with oil!
d. Replace the oil fill plug.
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2. CHECKING OIL LEVEL
a. Open the gas ballast valve (small brass fitting located next to the handle) one turn. Do not remove!
b. Start pump and run with intake port capped for about two minutes. Observe the oil level with the
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pump running. The oil level in the sight glass should be even with the level line.
c. If the level is low, open the intake port and run pump for 15 seconds, stop pump and observe oil level
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again. Add a small amount of oil as needed.
3. GAS BALLAST VALVE
The gas ballast valve must be 1/4 turn to fully opened for the first part of the evacuation procedure.
After about two minutes close the valve and continue the evacuation procedure to reach ultimate vacuum.
FAILURE TO OPEN THE GAS BALLAST VALVE MAY RESULT IN DAMAGE TO YOUR CARTRIDGE. Failure
to close the valve during evacuation will result in poor vacuum performance.
During the first stages of evacuation, vapors are highly concentrated. Unfortunately, some vapors will
condense into a liquid and mix with the oil, thus reducing the oil's ability to produce a deep vacuum. The
GAS BALLAST VALVE emmits a controlled amount of dry air into the pump during compression to
minimize this effect and keep oil relatively clean during the first part of the evacuation. Periodically
remove the Gas Ballast Valve Needle and clean or replace the O-ring. Clean mating surfaces and lightly
coat with vacuum pump oil before securely retightening.
4. CHANGING OIL
In order to reach the deep vacuum required, your vacuum pump needs clean, moisture-free oil during
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DO NOT ATTEMPT TO OPERATE WITHOUT USING OIL!!!
In order to make the best use of your investment, familiar-
ize yourself with the new features and operating instructions
before starting pump. Routine care and maintenance of your
vacuum pump will give you years of reliable service.
Retain shipping box and packing material for use if factory
warranty service is required.
IMPORTANT!: Use oil specifically refined for Deep
Vacuum Pumps. Use of oil not refined for Deep Vacuum
Pumps and/or operating with contaminated oil will void
warranty.
Each vacuum pump has been factory tested for CFM and
micron performance. The serial number has been recorded.
Complete and mail the warranty form immediately to validate
your warranty!
CAPACITY: 1.5 CFM (42 LIT/MIN) = 10 oz.
www.mastercool.com
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