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Oil Changes

CHANGE OIL AFTER EACH USAGE

 

to protect pump components from con-

taminants pulled into pump during service. 

Place used oil in a sealable container and 

dispose of properly in accordance with local 

regulations. 

YELLOW JACKET vacuum pump oil is 

specially refined and formulated for ex

-

tremely low vapor pressure and high pump 

efficiency at all temperature conditions. 

This means it can help you get a 

continued 

return on your pump investment.

In fact, with 

proper maintenance

, your 

pump can keep making money for you up 

to ten years and more. Proper maintenance 

includes:

Change the oil immediately after every 

use while the oil is still warm. This 

insures that contaminants are still in sus-

pension and are removed with the oil.

1)

If contaminants cool, solidify and stay in 

the pump, the lower vacuum efficiency. 

In extreme cases, the oil stops lubricat

-

ing and the pump seizes.

Oil may look clean, but still be contami-

nated. “Looking clean” is not enough. 

One job is more than enough to con-

taminate oil. The only way to determine 

oil condition is to test vacuum pulled 

with an electronic vacuum gauge. 

When finished with the pump, replace 

the tethered cap on the intake fittings 

(check for o-rings in caps). This keeps 

out moisture and contaminants. 

Vacuum levels can be reached only when 

the correct amount of YELLOW JACKET 

oil is used. 

Damage done by improper 

oil maintenance or by using the wrong 

type of oil is not covered under waranty. 

Refrigerant oil, brake fluid and any other 

oil such as motor oil cannot be used.

2)

Dual Voltage Motor Power Conversion (if applicable)

STEP 1

Disconnect the 

motor from the 

power supply and 

remove. Re-

move  the  yellow            

“CAUTION” 

sticker from the 

back of the motor.

STEP 2

Pull up on the white plastic “arrow” switch 

using needle-nosed pliers until the switch 

is loose inside the motor housing (it will 

not come 

completely out 

of the motor).

Note: Do not 

try to turn or 

rotate the switch 

until it has been 

pulled up and  

is loose.

STEP 3

Point the arrow toward the desired voltage 

setting and push the 

switch back down 

into the motor. The 

arrow on the switch 

should be sub-flush 

of the motor housing 

when correctly in-

stalled at the desired 

voltage.

HI = 230 VAC / 50 Hz

LO = 115 VAC / 60 Hz

STEP 4

Replace the yellow “CAUTION” sticker 

over the voltage 

selector switch.

Ensure that the voltage 

setting corresponds 

with the power sup-

ply that the motor is 

plugged into.*

*Warranty is void if the set vacuum pump voltage does not match the power supply.  

  Dual voltage motors are factory set to 230 V/50Hz.

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