Hanbell RC2-AVI Series, Manual

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11
Suggestions on piping works
The unsuitable piping works done to the compressor could cause abnormal vibration and noise that might damage the
compressor. Take notice of the following points to prevent this situation from happening:
1. Cleanliness of the system should be kept after welding the piping to avoid any swarf or debris contained inside the
system as it may cause serious damage to the compressor during operation.
2. In order to reduce the vibration on the piping tubes, it is recommended to use copper tubes for suction and discharge
piping tubes. Copper tubes are better to minimize the vibration in the piping while the compressor is in operation. In
case steel tubes are used in piping system, then welding jobs are very important to avoid any stress in the piping. This
inner stress can cause harmonic vibration and noise that can reduce the life of the compressor. If a large-caliber
copper tube is not easily accessible and a steel tube is used instead in suction piping, Hanbell also recommends use of
a copper tube in discharge piping to best minimize abnormal vibration and noise.
3. Remove the oxidized impurities, swarf or debris caused by welding in the piping tubes, if these fall into the
compressor, the oil filter might be clogged resulting in malfunctioning of lubrication system, bearings and capacity
control system.
4. The material of suction and discharge flange bushing is forged steel and it can be welded directly with piping. After
welding the flange bushings and pipes, it must be cooled down by ambient air. Do not use water to cool it down
because water quenching is prohibited.
Installing the compressor in a sloping position
Figure 4.4 shows a 15° limit of oblique angle for installation of compressor. In case the oblique angle is higher than the
limit, compressor will be shut down easily. For special applications like the installation in ships, fishing boats, etc…,
where the oblique angle might exceed the limit, external oil separators, oil tanks and related accessories are
recommended to be installed. Please contact HANBELL or local distributors for further layout recommendation.
Figure 4.4: Limits of oblique angle for the installation of the compressor