Thomas Industries Rietschle Thomas MACRO VTB 180 Instrucciones De Uso página 6

Suitability
The units VTB are suitable for use in the industrial field i.e.
the protection equipment corresponds to EN DIN 294
table 4, for people aged 14 and above.
The VTB can be used for the evacuation of a closed system or for a
permanent vacuum from 200 to 1000 mbar (abs.).
The ambient and suction temperatures must be between
5 and 40° C. For temperatures outside this range please
contact your supplier.
These dry running vacuum pumps are suitable for use with air of a
relative humidity of 30 to 90 %.
Dangerous mixtures (i.e. inflammable or explosive gases
or vapours), extremely humid air, water vapour, aggres-
sive gases or traces of oil and grease must not be handled.
The standard versions may not be used in hazardous areas. Special
versions with Ex-proof motors can be supplied.
For all applications where an unplanned shut down of the
vacuum pump could possibly cause harm to persons or
installations, then the corresponding safety backup system must be installed.
Handling and Setting up
Pumps that have reached operating temperature may have a surface temperature at position (Q) of more than 70° C. WARNING! Do
Not Touch. (see pictures
The filter housing (S), exhaust box (T), housing cover (b) and greasing points (L) must all be easily accessible. For maintenance purposes we
recommend a space of 0.4 m in front of the filter housing and housing cover. The cooling air entries (E) and the cooling air exits (F) must have a
minimum distance of 20 cm from any obstruction. The discharged cooling air must not be re-circulated. If the cooling air exits from the spiral
housing (W ) via ducting, then care should be taken so that the passage of air is not obscured. (see pictures
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The VTB pumps can only be operated reliably if they are installed horizontally.
For installations that are higher than 1000 m above sea level there will be a loss in capacity. For further advice please contact your
supplier.
When installed on a solid base, these pumps do not require fixing down. If the pumps are installed on a base plate we would recommend fitting anti-
vibration mounts. This range of vacuum pumps is almost vibration free in operation.
Installation (pictures to
For operating and installation follow any relevant national standards that are in operation.
1.Vacuum connection at (A).
The air handled can be exhausted into the atmosphere through the exhaust port (B) or on models VTB (31) by directing the air through the spiral
housing (W ).
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Long and/or small bore pipework should be avoided as this tends to reduce the capacity of the pump.
2. The electrical data can be found on the data plate (N) or the motor data plate. The motors correspond to DIN/VDE 0530 and have IP 54
protection and insulation class B or F. The connection diagram can be found in the terminal box on the motor (unless a special plug connection
is fitted). Check the electrical data of the motor for compatibility with your available supply (voltage, frequency, permissible current etc.).
3. Connect the motor via a motor starter. It is advisable to use thermal overload motor starters to protect the motor and wiring. All cabling used
on starters should be secured with good quality cable clamps.
We recommend that motor starters should be used that are fitted with a time delayed trip resulting from running beyond the amperage setting.
When the unit is started cold, over-amperage may occur for a short time.
The electrical installation may only be made by a qualified electrician under the observance of EN 60204. The main switch must be
provided by the operator.
Initial Operation (pictures
The desiccant bags in the filter housing (S) must be removed before initial start-up.
Maximum number of starts per hour: 8 (VTB 180 / 250), 6 (VTA 340 / 500)
1. Initially switch the pump on and off for a few seconds to check the direction of rotation against the direction arrow (O).
Note: On this initial start the suction pipework should not be connected. If the pump runs backwards with the pipework connected a
pressure could build up within the housing which could result in damaged rotor blades.
2. Connect the suction pipe at (A).
For pipe work longer than 3 m we recommend using non-return-valves (ZRK), to avoid reverse rotation when the units are switched
off.
3. Vacuum regulating valve (optional extra):
The vacuum can be adjusted by turning the regulating valve (C)
according to the symbols on the top of the regulating valve.
Potential risks for operating personnel
Noise Emission: The worst noise levels considering direction and
intensity (sound power), measured according to DIN 45635 part
3 (as per 3. GSGV), are shown in the table at the back. When
working permanently in the vicinity of an operating pump we
recommend wearing ear protection to avoid any damage to
hearing.
and )
)
and )
VTB (01) Q
c
a
Q e
VTB (31) Q
c
a
Q e
Q T
to )
Q T