Neilsen CT3793 User manual

3CFM VACUUM PUMP CT3793
ORIGINAL INSTRUCTIONS
SAVE THESE INSTRUCTIONS AND PRECAUTIONS.
READ ALL PRECAUTONS AND INSTRUCTIONS BEFORE USE.
Cannon Tools Limited
Address: 20 Station Road, Rowley Regis, West Midlands, B65 0JU.U.K.

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EC DECLARATION OF CONFORMITY
We CANNON TOOLS LTD
20 Station road, Rowley Regis, West Midlands,B65 0JU.U.K.
Declare that the following machine complies with the appropriate basic safety
and health requirements of the EC Directive based on its design and type, as
brought into circulation by us.
In case of alteration of the machine, not agreed upon by us, this declaration
will lose its validity.
Product description: 3CFM VACUUM PUMP
Model: CT3793
Applicable EC Directives:
EC Low Voltage Directive 2014/35/EU
EC Directive of Electromagnetic Compatibility 2014/30/EU
Harmonized standards
EN 60204-1:2018, EN 61000-6-3:2007+A1:2017,
EN 61000-3-2:2019, EN 61000-3-3:2013+A1:2019,
EN 61000-6-1:2019
20 Station Road, Rowley Regis, West Midlands, B65 0JU.U.K.
Mr. Gurcharan Tony Singh Sanghera
Managing Director
CANNON TOOLS LTD
2021-03-18

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1. MAIN TECHNIQUE PARAMETERS
Model：CT3793
Voltage: 220-240V~
Frequency: 50Hz
Flow rate: 3cfm
Ultimate Vacuum 10Pa
Power: 1/4HP
Rotate speed: 1440r/min
Oil capacity: 200ml
Dimensions: 249x121x230mm
Oil Anti-flow back design
The gas inlet is specially designed to prevent the oil from flowing back, preventing the container
and the hoses from being polluted.
EnyjronmentaLdeslgn
The tank has separating devices at the exhaust port to prevent oil spraying and to reduce
pollution.
Aluminum alloy casing
Motor using Aluminum alloy casing, have good heat dissipation qualities, it will help to keep the
pump running more efficiently for a longer period of time, and has a good appearance quality.
Overall design
The electric components and the pump are overall designed to make the product compact and
lighter.
Easy to start, faster to pump
The starter design make the vacuum pump easy to start even in lower temperatures. This
feature allows higher efficiency and faster pumping.
Low noise and vibration
An electrometric-coupling insert between the motor and module results in extremely quiet and
smooth operation.

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2. CAUTIONS
Don’t pump flammable, explosive or poisonous gases.
Don’t pump gas that can corrode metals and exert chemical charges.
Don’t pump gas containing any dust or moisture.
The temperature of the pumped gas shouldn’t be over 176oF (80oC), and the environment
temperature should be around 23°F(-5 oC) to140°F (60 oC).
Don’t use vacuum pump as a compression pump or conveyer pump.
Pump can not be operated without oil.
The operating voltage is between 192 to248V, 50HZ. You must use a grounded outlet.
When unplugging the pump, pull the plug. Don’t unplug unit by pulling on the wire.
Keep electrical cord free from all shop equipment, and do not let pump hang by power cord.
Don’t use damaged plug or outlet.
Don’t plug or pull out the plug with wet hands.
Don’t plug unit in, unplug unit or use switch if there are any flammable or explosive gases
present.
Always unplug unit before disassembling.
3. PRODUCT ILLUSTRATION
4. USABLE RANGE
This series of single-stage rotary vane vacuum pumps and two-stage rotary vane vacuum
pumps are used to obtain vacuum by pumping gas from sealed containers, especially suitable
for Refrigeration repair ( use with R12, R22, and R134a air conditioning systems), medical
appliances, printing machinery, vacuum packing, gas-analysis and hot-forming plastics.

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5. USE’S MANUAL
Examine the oil-level before using to make sure the oil-level is not lower than the oil-level
line in the sight glass. Do not run pump with low oil levels. Add oil to bring it up to the oil level
line.
Connect the container to be pumped to the gas inlet. The hose should be short, sealed and
free of dust, dirty and heavy condensation.Check if leaks before operating pump.
Plug in the power supply and turn the switch on.
Unplug the vacuum pump, remove the connecting hoses and cover the oil plug after using.
6. INSTALLATION
When in use.the pump should be horizontal and should be positioned where it is dry,
ventilated and free of dust and other contaminants.
In order to ensure proper air flow, you must maintain a clearance around the pump of at least
10cm (4inches).
To permanently mount the vacuum pump,remove the rubber pads
from the bottom of the base, and use the existing threaded holes to
mount unit. Mount with ST4.2 screws.
When permanently mounting this pump, be sure to maintain proper clearances around the
unit, especially at the air intake at the end of the vane shell.
If a special electromagnetic valve is needed, it can be installed on the gas inlet.
7. TROUBLESHOOTING
Problem
Possible Cause
Correction
Low
Degree Of
Vacuum
1. Lack of oil
2. Oil is not clean
3. The oil inlet is blocked
4. The hose or gas inlet are clogged
5. The pump is not suitable for your
application
1. Add oil to above the oil level line
2. Change the oil
3. Clean the oil inter or clean the
filter
4. Check the connecting pipes
5. Get suitable pump for your
application
Oil Leaks
1. The oil seal is damaged
2. The housing gasket is loose or worm
out
1. Change oil seal
2. Change the housing gasket
Oil Spray
1. Too much oil
2. The pressure at the gas inlet is too
high or it has pumped too much
1. Oil to the oil-level line
2. Change to a bigger pump
Starting
Difficulty
1. The oil temperature is too low
2. Electrical malfunction
3. Foreign matter is in the pump
1. Start the pump several times to
try to heat the oil
2. Check and have it fixed
3. Check and remove it

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8. MAINTENANCE
Keep the pump clean and prevent foreign matter from entering.
Keep the oil filled to the oil-level. Don't let pump run without oil.
Keep the oil clean. If the oil becomes dirty, muddy, or water or other volatile substances gets
in, it will affect the performance of the pump and the oil should be replaced. Before replacing
the oil, start the pump and have it for about 30 minutes to make the oil thin. Stop the pump
and drain the oil from the oil drain plug. Then open the gas inlet and running 1-2 minutes,
during this time, add a small quantity of clean oil for the gas inlet, that's in order to replace
the residual oil from the inside pump. After making sure the pump is clean, put the drain plug
back in and then fill the clean pump oil from the gas inlet to the oil-level.
To store the pump when not in use for long periods of time,cover the oil cap and store it in a
dry place.
Rep air of pump should only be done by a qualified service technician.
9. DISPOSAL
At the end of the machine's working life, or when it can no longer be repaired, ensure that it is
disposed of according to national regulations.
Contact your local authority for details of collection schemes in your area.
In all circumstances:
Do not dispose of this tool with domestic waste.
Do not incinerate.
10. SYMBOLS
The following symbols are used in this manual and/or on the machine:
Denotes risk of personal
injury or damage to the tool
WARNING – To
reduce the risk of injury,
user must read
instruction manual
In accordance with
essential safety standards
of applicable European
directives
Mandatory use of eye
protection
Wear noise protection

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11. ASSEMBLY DIAGRAM AND PARTS LIST

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CANNON TOOLS LTD
Add: 20 station road, Rowley Regis, west midlands,B65 0JU.U.K.
Made in China