Installation; Maintenance - Becker U 3.10 Betriebsanleitung

Operating Instructions
Rotary vane vacuum pumps
oillubricated, air-cooled
Safety Regulations
Please comply with Accident Prevention Regulations
VBG 16, Compressors, in particular Section IIIc
"Installation" and IV "Operation" plus VBG 4 "Electrical
equipment and tools".
Pumps may only be converted or modified after
approval by the manufacturer.
Application
The pumps can be used to generate a vacuum.
The specification is valid up to a height of 800 m
above sea level.
The pumps cannot be used for transport of toxic or
flammable materials.
Ensure that only normal atmospherica air is taken in.
Transport and storage
Store pump in a dry area. Prevent water splashes.
Lift and transport only by using the ring screws.

Installation

It is recommended to install the pumps with easy
access for maintenance.
Clearance between compressors and adjacent walls
should be no less than 10 cm of free space in order
to ensure sufficient air flow for cooling.
Ambient temperatures must not exceed 40°C.
Connection and installation
Ensure correct dimensions (see Table) and clean
pipelines (no weld spatter, chips or similar
contamination). The diameter of the pipelines must
be at least correspond to the connection threads.
With pipelines exceeding 2 m in length use the next
greater diameter.
Keep connections free from oil, grease, water and
other contaminants.
Gebr. Becker GmbH & Co. Postfach 2500220 D-42238 Wuppertal Tel. 02 02 - 6 97 - 0 Fax 02 02 - 66 08 55 Service: Tel. 02 02 - 6 97 - 1 71 Fax 02 02 - 64 44 74
U 3.6/3.10/1.16/3.25/3.40
Filling in oil
Use vaccum pump oil SHELL V9930 .
Screw off oil intake cover OE and, for U 3.6/U1.16,
fill-in oil up to the maximum of the oil indicator OG.
For U 3.10 thru 3.40 screw out the overflow cover OS
and fill-in oil only up to there.
Remove end caps at LA and SA. Do not connect to
pipeline yet.
Motor connection
Connection to the electricity supply must be effected
observing all applicable safety regulations. Comply
with EN 60204 T1.
Connect motor based on connecting diagram (in
terminal box) or ready-made plugs. Check for
connecting voltage and frequency.
Install motor circuit-breaker and set to nominal motor
current. (For data see motor rating plate).
Briefly start motor and check rotation (arrow on
casing). Exchange phases if rotation is incorrect.
Avoid switching of more than 10 times per hour.
One phase alternating current motors with
temperature controller will restart automatically after
an overload and corresponding cooling down.
Commissioning
Connect inlet line at SA.
Do not throttle or block the air oulet LA or use it as
pressurized air outlet.

Maintenance

Maintain your vacuum pump regularly to achieve the
best operating results. Maintenance intervals will
depend on the pump´s use and ambient conditions.
Before commencing maintenance, remove mains
plug from socket to avoid unintentional restarting.
Dirty inlet filter or blocked air degrease elements will
reduce air intake capacity.
To avoid overheating clean fan cover, fan grill, cooling
fins and surfaces of the pump.
Oil / oil separation
The oil level must be checked daily while the pump is
switched off. The oil level must not be lower than the
middle of the oil indicator OG.
Oil exchange
- first oil exchange after 100 hours of opeartion
- then always after 500 - 1000 hours of operation
- at least once every 6 months
- or if too much water is taken in.
The old oil is drained at the draining outlet OA while
the pump is switched off and still at operating
temperature.
Check the air degrease element FA at the time of oil
exchange and renew when blocked: Loosen cover
DE and centering disc DZ.
Check coarse material separator and wash out if
dirty: Loosen retaining ring SR. For U 3.25 and U
3.40 additionally loosen oil container cover OD.
Vacuum pumps Compressors
Accessories
Install intake filter AS in such a way that the filter
cartridge is lying horizontally, thus no dirt will get into
the pump during maintenance work.
Clean the filter cartridges depending on dust
accumulation. Using pressurized air blow out filter
from inside to outside. Wash out filter housing interior
or clean using suction.
Replace blocked, oily or greasy cartridges.
Adjust vacuum adjustment valve to operational value.
U 3.6/3.10/1.16/3.25/3.40