MasterCool 90062a Instruction Manual

Instruction Manual VACUUM PUMPS

In order to make the best
use of your investment,
familiarize 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.

2 STAGE (DUAL VOLTAGE CAPABILITY)

Non-slip Cushion Handle.

Gas Ballast Valve Helps Prevent
Oil Contamination Caused By
High Moisture.

Vapor Discharge/
Oil Fill Port. Easily
Removable. Contains
Internal Check Valve
to Prevent Escape of
Liquid Oil.

English

Thermally Protected Motor
with On/Off Rocker Switch.

Protected Slide Switch

to Change Operating

Voltage between
115V/50/60HZ &

22OV/50/60HZ

FEATURES

• An air passage prevents
pump oil from returning
to contaminate vacuum
vessel and pipeline after

Large
Oil Level
Sight
Glass with
Max/Min
Oil Level
Indicator.

the pump stops.

• A built-in device
eliminates oil mist and an

oil-gas separator at the
air exhaust outlet takes

Easily Accessible
Oil Drain Valve.

Large, Light Weight
Reinforced Base for
Stable Positioning.

care of oil contamination in the air exhaust.

1 STAGE

Vapor Discharge/

Oil Fill Port. Easily

Removable. Contains

Internal Check Valve
to Prevent Escape of

Liquid Oil.

Large

Oil Level

Sight

Glass with

Max/Min

Oil Level

Indicator.

Easily Accessible

Oil Drain Valve.

Cooling Fins to Keep Temperature Cooler
During Extended Motor Operation.

MAX

MIN

Non-slip Cushion Handle.

Large, Light Weight
Reinforced Base for
Stable Positioning.

Cooling Fins to Keep Temperature
Cooler During Extended Motor
Operation.

• Specially designed for low
temperature and low voltage
conditions to guarantee

Includes T-Fitting
with 1/4” Flare and
1/2” ACME Ports.

Thermally Protected
Motor with On/Off
Rocker Switch.

normal starting in winter;
≥41˚F (≥5˚C) temperature
and ±10% rated voltage.

• Pump runs with extremely
high ultimate vacuum and low
noise.

EACH VACUUM PUMP HAS BEEN
FACTORY TESTED FOR CFM AND
MICRON PERFORMANCE.

High Volume
Fan Provides
Cool Air to
Motor &
Pump.

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

DO NOT ATTEMPT TO
OPERATE WITHOUT
USING OIL!!!

High Volume Fan

Provides Cool Air to

Motor & Pump

Manifold Valve Isolates
Pump from the System

Testing for Leaks.

Includes 3 Inlet Ports,

1/4”, 3/8” SAE and 1/2”

ACME.

1

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.

1. OIL FILL

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!

a. Make sure the oil drain valve located below the front casing is closed before attempting to add

oil.

b. Remove the rubber cap from the top of pump. (DO NOT USE DURING OPERATIONS)

Unscrew oil fill port.
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 port.

OIL CAPACITY:

3 CFM 1 Stage 13.5 OZ / 400 ML 3 CFM 2 Stage 13.5 OZ / 400 ML
6 CFM 1 Stage 15.2 OZ / 450 ML 6 CFM 2 Stage 13.5 OZ / 400 ML

10 CFM 2 Stage 19.3 OZ / 570 ML

2. CHECKING OIL LEVEL

a. Open the gas ballast valve (small brass fitting located next to the handle) one turn. Do not

remove! (AVAILABLE ON 2 STAGE PUMPS ONLY)
b. Start pump and run with intake port capped for about two minutes. Observe the oil level with

the 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 again. Add a small amount of oil as needed.

3. GAS BALLAST VALVE (2 STAGE MODELS)

The gas ballast valve must be partially 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 close the valve during high vacuum operation 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 emits a controlled amount of dry air into the pump
during compression to minimize condensation 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 evacuation. Dirty oil becomes a mixture of corrosive acids and water that effects
the pump’s ability to pull a deep vacuum. Left sitting in the pump, this sludge will rust and erode
internal surfaces shortening the pump’s life.

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

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