- Fan Type
Glass fiber reinforced plastic anti-corrosion fan shall be single inlet centrifugal and belt drive or direct drive. The fan shall be acid, alkali, organic solvent gas resistant. All parts contacted with gas shall be corrosion resistant treating. The inlet shall be smooth, arc shape for fluent air intake.
- Quality Standards
Glass fiber reinforced plastic anti-corrosion fan shall be tested in accordance with AMCA Standard 210 and 300. The manufacturer must own the Production license for industrial Product and ISO9001 quality system authentication.
The housing and wheel shall be constructed of glass fiber reinforced plastic. The pitch of the layer shall not be lower than 50%.This material shall add different corrosion resistant components according to different gas compositions. The material shall not change color, spot and come off under the designed operation.
Fan wheel shall be centrifugal, backward curved, glass fiber reinforced plastic. The wheel shall be balancing tested statically and dynamically to level G4.0 as AMCA204 standard. The fan shall keep stable airflow and low noise at maximum speed. The fan shall effectively avoid performance reduction with operating point slide. Wheel appearance shall be even color and luster, bright and clean surface, no crack, no gap, burr. Bubbles (diameter>3mm) shall not exist.
- Fan Housing
Fan housing shall be constructed of glass fiber reinforced plastics, the thickness and strength shall be strong enough to support weight at maximum operating speed. Fan housing shall adopt glass fiber reinforced plastics seamless sticking technology for preventing air leakage. All the metal parts in the housing shall be covered by two layers (0.2mm) of glass fiber reinforced plastics. Cover shall be smooth transition with fan. Shaft hole shall not be larger than the diameter 2mm of shaft sleeve and shall add shaft seal.
Fan inlet shall be strictly designed according to aerodynamic performance, constructed of glass fiber reinforced plastics. The surface shall be smooth and streamline with good rectification results, reduce turbulence effectively to improve fan efficiency and reduce noise.
- Transmission Device (Only for belt drive type)
Fan shaft shall be heat treated through soaking furnace. The fan shaft shall be balanced together with the wheel, and the shaft design speed shall at least exceed 25% of the maximum fan operation speed. Shaft shall be furnished with fiber-glass reinforced plastic shaft sleeve, which shall be at least 10mm out of the housing. The shaft inside of the chamber and the end shall be corrosion resistant. Two-bearing units（including two bearings and bearing box） shall be used to support fan shaft. The bearings shall be selected for a minimum (L-10) life in excess of 80,000 hours at maximum cataloged operating speed.
Motor shall be closely matched to the fan load, IP54, and insulation class F.Motor and drives shall be out of airflow, avoiding erosion of corrosive gas, extending durability.
Permanently fixed aluminum nameplate shall be fixed on fan body clearly display fan mark, product model and serial number (i.e.: unique ID for each fan), so that the customer can use this number to find out the parts used.
- Acceptable Manufacturers
Qualified suppliers shall have an AAA credit rating. Providing INFINAIR or similar products, with their design based on BCSF models of INFINAIR.