CF4-86 High Efficiency Kitchen Centrifugal Exhaust Fan

* Model No.4A~8A of CF4-86 centrifugal fan is composed of flat backward curved impeller, integral carbon steel welded volute casing, circular air inlet and direct-coupled fixed-speed motor. ·

* The flat backward blade design effectively avoids grease adhesion and oil dirt accumulation on impeller surface, featuring high static pressure and excellent aerodynamic performance for long-term kitchen fume exhausting. ·

* All models adopt 380V direct drive structure with compact overall layout, convenient for ceiling or wall-mounted installation inside catering kitchen and public dining space. ·

* Optimized volute inner flow path ensures stable static pressure output, matching long-distance oil fume pipeline exhaust requirement of restaurant exhaust system. ·

* Standard outlet angle can be customized to match existing duct layout for catering project renovation.

CF4-86 Model Features:

Material Properties

Featured by anti-oil-stain, high static pressure and compact structure, CF4-86 series fans are specialized exhaust equipment for kitchen oil fume ventilation of hotel, restaurant, staff canteen and all kinds of catering service establishments. Standard version is equipped with ordinary three-phase asynchronous motor; B-CF4-86 explosion-proof variant with YB flameproof motor is available on request for special kitchen with flammable volatile cooking waste gas. F-CF4-86 stainless steel customized type is optional for high-corrosion oily waste gas environment, keeping identical airflow parameter and installation dimension as standard carbon steel fan.

Benefits

Standard CF4-86 fan is applicable for conveying clean air and non-flammable harmless cooking waste gas; explosion-proof variant is used for exhaust of volatile flammable fume. Conveyed medium shall not contain sticky viscous substance, dust and hard particulate ≤150mg/m³ and medium operating temperature shall not exceed 80℃.

Fan Structure

B-CF4-86 explosion-proof centrifugal fan shares consistent technical performance, outline dimension and foundation installation size with standard CF4-86 fan, only driving motor is replaced with flameproof specification.

Model Selection

The series is divided into two rotating speed grades:1450r/min and 1470r/min with matched power ranging from 1.5kW up to 22kW, diversified power-speed configuration realizes wide flow and static pressure scope to satisfy different kitchen fume exhaust and pipeline resistance demand.

Q1: Why is flat backward blade more suitable for kitchen fume exhausting than ordinary blades?

A1: Flat backward structure greatly reduces oil grease adhesion on blade surface, effectively preventing fan blockage caused by accumulated cooking oil and extending regular cleaning cycle.

Q2: Can I get explosion-proof type for restaurant kitchen with flammable oil vapor?

A2: Yes, B-CF4-86 explosion-proof fan fitted with flameproof motor is customized for high-risk kitchen with volatile combustible cooking fume.

Q3: What’s the max allowed working temperature of exhausted kitchen air?

A3: Medium temperature cannot exceed 80℃, medium without sticky viscous substance, solid particle content ≤150mg/m³.

Q4: Are all CF4-86 models 380V three-phase voltage? Can 220V single-phase motor be customized?

A4: Standard configuration is 380V, 220V single-phase motor is available for small-size models upon special customization.

Q5: Is stainless steel version available for seafood restaurant corrosive oily exhaust?

A5: F-CF4-86 full stainless steel fan can resist corrosive salt-containing oil fume, same mounting size and performance as carbon steel model.

Q6: Can outlet direction be adjusted to fit my existing kitchen duct layout?

A6: Multiple outlet angles can be preset during production to match your on-site pipeline installation requirement.

Q7: How to choose proper model for my restaurant kitchen exhaust project?

A7: Provide kitchen area, duct total length and required exhaust air volume, we recommend corresponding model, power and static pressure grade.

Q8: Do your motors have CE certification for European catering market?

A8: Standard motor meets IEC standard, CE-certified motor can be supplied for EU customers as customized order.

Q9: What is your factory warranty period for CF4-86 series?

A9: 12-month warranty against manufacturing defects from delivery date, vulnerable spare parts like bearing are excluded from free warranty.

Q10: Can this fan be installed on ceiling or wall for space-saving?

A10: Compact body design supports ceiling suspension and wall-mounted installation, widely applied for narrow kitchen layout of chain restaurants.