Instruction book
6996 0227 40 69
1) Location:
Locate the vacuum pump on a level surface that is clean, well lit, well ventilated and capable taking the
weight of the pump. The entire length of the frame base must be supported. Shim where necessary (do not
use wood). Ambient temperature should not exceed temperatures listed on the specifications.
All models are intended for indoor installation.
Do not locate the unit where the hot exhaust air from other vacuum pumps or heat generating equipment
may be drawn into the unit. Never restrict the flow of exhaust air from the fluid cooler.
The heated exhaust air must be exhausted to the outside to prevent high ambient conditions in the room.
2) Piping connections:
The vacuum distribution and piping system, including the vacuum pump and all related components, must
be designed in accordance with generally accepted engineering practices. For instance, inlet pipe work
should slope away from the vacuum pump. Improperly designed distribution systems can cause damage to
the vacuum pump. Exhaust piping should be installed in such a manner as to not create additional back
pressure on the vacuum pump. Also, the exhaust piping should be installed sloping away from the vacuum
pump.
A drip leg with drain point provision is foreseen available inside the vacuum pump, to prevent condensate
from running back into the fluid reservoir.
Care must be taken to avoid assembling the piping in a strain with the vacuum pump.
It is very important to use adequate pipe diameter for the vacuum network. The combination of restrictive
pipe diameter and long pipe runs can create significant pressure drop. A rule of thumb on single vacuum
pump installations: maintain the diameter of the vacuum pump inlet as far into the process as possible.
It is recommended to install an isolation valve at the inlet of the vacuum pump, to isolate the pump from
vacuum distribution and piping system before performing maintenance.
The discharge air can run up to 120 °C (248 °F), piping should be suitable to handle this temperature.
The vacuum pump is equipped with an inlet filter, however depending on the application it may be required
to add additional inlet filtration upfront the vacuum pump.
3) Ventilation:
The inlet grid(s) and ventilation fan should be installed in such a way that any recirculation of cooling air to
the inlet grating of the vacuum pump is avoided. The air velocity to the grid(s) has to be limited to 5m/s.
The maximum air temperature at intake opening for 3 ph is 46 °C (115 °F) and for 1 ph is 32 °C (90 °F),
(minimum 0 °C / 32 °F) Ventilation alternative 1 and 3: The required ventilation to limit vacuum pump room
temperature can be calculated from:
Qv = 1.06 N / T
Where, Qv = required cooling air flow (m³/s)
N = Nominal motor power of vacuum pump (kW)
T = Temperature increase in vacuum pump room. (°C)
Ventilation alternative 2 and 4: The fan capacity should match the vacuum pump fan capacity at a pressure
head equal to the pressure drop caused by cooling air ducts.
Max. allowable pressure drop in ducting before or after the vacuum pump = 10 Pa
Safety
Apply all relevant safety precautions, including those mentioned in this book.
Refer to instruction 9820726229 for inlet and outlet related options.
To Next Page
Loading...
