▪ Ensure that the bolt size and spacing is adequate for the loads anticipated
and the strength of the floor or frame.
▪ To locate the pump directly on the floor, use a concrete foundation with a
mass of at least 1.5 times the mass of the pump. Ensure that the length and
width of the foundation extend at least 100 mm (4 inches) beyond the
dimensions of the pump.
▪ If vibration transmission is a concern, vibration isolators (not supplied) should
be fitted between the base frame and floor mounting bolt or stud.
6.2.3. Piping and ventilation
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. Improperly designed distribution systems can cause
damage to the vacuum pump. For example, the process inlet pipe must slope
away from the vacuum pump. Process outlet piping, also called exhaust piping,
must slope away from the vacuum pump and must be installed such that it does
not create additional back pressure on 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 a
significant pressure drop. A rule of thumb on single pump installations: maintain
the diameter of the pump inlet as far into the process as possible.
Do not install the vacuum pump such that it will cause strain on the inlet or outlet
flanges or any connecting pipework.
Refer to Installation drawings on page 80.
W
ater cooling piping must be at least equal to or larger than its nominal diameter.
In case of a high water cooling pressure supply close to 10 bar(g), it is
recommended to install a pressure relief valve (for example, at the inlet of the
water cooler). Pressure must not exceed 7 bar.
Full pump isolation is crucial for efficient pump maintenance or replacement, we
recommend to equip isolation valves for process inlet, cooling water inlet and a
non-return valve for exhaust outlet.
The discharge air can have a temperature up to 210 °C (410 °F), piping must be
suitable to handle this temperature.
Ventilation
The inlet grid(s) and ventilation fan must 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 5 m/s.
The maximum air temperature at intake opening is 40 °C (104 °F), (minimum
5 °C / 41 °F)
Ventilation alternative:
The required ventilation to limit vacuum pump room temperature can be
calculated from:
Q
v
= 1.06 (N + Q
process
- Q
HE
) / T
07/2021 - ©Atlas CopcoPage 831950840208_A
Installation