Quincy Compressor QCV 045, Instruction Book

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Section III - Installation
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Leakage in the pipework and accessories is a major factor that affect the performance
and efficiency of the pump.
Regular inspection and leak testing is recommended. It is essential that the internals of
the pipe is cleared of foreign objects before starting the pump. Installation of an inlet
protection gauge is good practice to safeguard the pump.
Ventilation:
Avoid recirculating the hot air from the pump ventilation ports back it to the pumps
cooling system and relief valve. This will cause inadequate cooling and unnecessary
overheating.
The air velocity to the ventilation ducts to be limited to 5 m/s
The maximum air temperature at intake opening is 40°C (104°F), (minimum 0°C / 32°F)
Ventilation alternative 1 and 3 (refer the Installation proposal Drawings):
The required ventilation to limit 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 pump (kW)
T = Temperature increase in pump room. (°C)
Ventilation alternative 2 and 4 (refer Installation proposal Drawings):
The fan capacity should match the pump fan capacity at a pressure head equal to the
pressure drop caused by cooling air ducts.
Maximum allowable pressure drop in ducting before or after the vacuum pump = 10 Pa.
Air intake filter (In case of overpressure pump)
If the air intake filter (1) is delivered loose, mount it in a leak-tight manner according to
the following instructions:
Reference Name
1 Air filter