Mastercool 90060 1.5 CFM VACUUM PUMP (TWO STAGE) - Manual (Page 3)

3 www.mastercool.com
Care should be taken to avoid contact of oil with skin or eyes. OIL MAY BE HOT!
Used oil should be properly disposed of in a leakproof corrosive-resistant
container according to local regulations.
a. After every evacuation, while the pump is warm and oil is thin, take a small sample
of oil from the drain port.
b. If the oil is contaminated, drain the oil by placing the pump on a level surface and
opening the oil drain valve. Catch the waste oil in a container and properly dispose
of it.
c. If the pump has been sitting for more than one month, the oil is considered
contaminated regardless of appearance and should be changed as outlined above.
d. To add oil, close drain, remove the oil fill cap and fill to the Oil Level Line with fresh
oil.
5. INTAKE CONNECTIONS
Replace all caps and finger-tighten. Do not use caps with damaged or missing O-rings
and always store vacuum pump with capped ports to prevent dirt and moisture
contamination.
6. PUMP MOTOR
• The PUMP and OIL must be above 30˚F.
• The line voltage must be equal to the rating on the motor nameplate + / - 10%.
• Normal operating temperature is approximately 160˚F, which is HOT to the touch!
Line voltage and ambient temperature will affect the normal operating temperature
somewhat. Your vacuum pump is designed for continuous duty and will run for extended
periods without overheating. The motor has an automatic resetting overload protection
feature. If the motor will not restart the pump after shut-off, it may have opened the
thermal protection. Disconnect the pump from the system, wait about 15 minutes for the
motor to cool down and then try again.
RETURNING A PUMP
Please fax a request for a return authorization number to 973-252-2455.
This applies to both warranty and non-warranty service!
Pumps returned for service without a return authorization number will not be accepted.
In your fax, include your NAME, ADDRESS and PHONE NUMBER along with a detailed
explanation of the problem. We will contact you (i.e. your phone number) to discuss your
problem and determine if you have to return your pump, or if we can troubleshoot it over the
phone.
If you have to return your pump, we will issue you an RMA#. Then, please follow the instruc-
tions below.
• Drain oil, cap all ports and place tape over the exhaust port located on the end of the pump
handle. If you fail to do this, your pump will not be accepted and it will be returned!!!
• Use the original shipping box and inserts if available. Shipping damages are impossible to
claim on used machinery.