This document is an instruction manual for the Siemens LF959RE55B extractor hood. It provides comprehensive information on its function, safety, operation, and maintenance.
Function Description:
The Siemens LF959RE55B is an extractor hood designed for domestic use, primarily in kitchens, to remove cooking fumes, odours, and vapours. It can operate in two primary modes: exhaust air mode and circulating-air mode.
In exhaust air mode, the air drawn in from the kitchen is cleaned by metal grease filters and then conveyed to the exterior of the building through a pipe system. This mode requires proper ventilation to prevent a partial vacuum in the room, especially when other room air-dependent heat-producing appliances (like gas or oil heaters) are in operation. Adequate fresh air supply is crucial to avoid the risk of flue gases being drawn back into the living space. The manual emphasizes consulting a Master Chimney Sweep to assess the ventilation setup and ensure safe operation in exhaust air mode.
In circulating-air mode, the air drawn in is cleaned by both metal grease filters and an activated carbon filter before being conveyed back into the kitchen. This mode is suitable when external venting is not possible or desired, as it does not create a partial vacuum. For effective odour binding in this mode, an activated carbon filter must be installed. The manual refers to a separate brochure or dealer for different options and required accessories for circulating-air mode.
Important Technical Specifications:
While specific numerical technical specifications like motor power or airflow rates are not explicitly detailed in this excerpt, the manual highlights several operational aspects:
- Operating Height: The appliance is intended for use up to a maximum height of 2000 metres above sea level.
- Partial Vacuum Limit: For safe operation in exhaust air mode with room air-dependent heat-producing appliances, the partial vacuum in the room must not exceed 4 Pa (0.04 mbar).
- Fan Settings: The appliance has three fan settings and an intensive setting. The intensive mode has a run time of 4 minutes before automatically reverting to fan level 2.
- Interval Ventilation: This feature automatically switches on the ventilation system at level 2 for 10 minutes every hour.
- Fan Run-on: The appliance can be set to switch off automatically after 10 minutes, activatable only in fan levels 1-3.
- Lighting: The lighting can be switched on/off and its brightness adjusted independently of the ventilation system.
- Saturation Signal: The appliance provides audible signals when filters are saturated: three signals for metal grease filters needing cleaning, and six signals for activated charcoal filters needing replacement. The saturation signal resets automatically after 20 hours.
- Remote Control: The appliance is operated via a remote control, which requires 23AE 12V batteries. Instructions are provided for connecting the remote control to the appliance and replacing its batteries.
Usage Features:
- Remote Control Operation: The primary interface for controlling the extractor hood is a remote control with buttons for light on/off/dimming, increasing/reducing fan level, interval ventilation, and fan run-on.
- Intuitive Fan Control: Users can easily adjust fan speed using the '+' and '-' buttons. The intensive setting is available for heavy fumes and odours.
- Independent Lighting: The hood's lighting can be controlled separately from the fan, allowing for flexible use. Brightness is adjustable by pressing and holding the light button.
- Automatic Functions: Features like interval ventilation and fan run-on offer convenience by automating ventilation tasks.
- Filter Saturation Indicator: Audible signals alert users when the metal grease filters or activated carbon filters require attention, ensuring optimal performance.
- Mode Switching: The electronic control allows users to switch between air recirculation and air extraction modes by pressing and holding the appropriate button for 4 seconds.
- Energy Saving Tips: The manual provides advice on how to use the appliance efficiently, such as adjusting fan speed to cooking intensity, switching off the hood and lighting when not needed, and regular filter maintenance.
Maintenance Features:
- Metal Grease Filter Cleaning: The metal mesh grease filters are designed to be cleaned regularly (at least every 2 months) to prevent fire hazards from grease deposits. They can be cleaned either by hand using a hot soapy solution and a brush, or in a dishwasher. The manual advises against using aggressive cleaning agents and to clean the filter holder as well.
- Activated Carbon Filter Replacement: For circulating-air mode, the activated carbon filter needs to be replaced when saturated, indicated by an audible signal.
- General Cleaning: The manual provides detailed instructions for cleaning various surfaces of the appliance:
- Stainless Steel: Clean with hot soapy water and a soft cloth, always in the direction of the grain. Special stainless steel cleaning products are also recommended.
- Painted Surfaces: Clean with hot soapy water and a damp cloth.
- Aluminium and Plastic: Clean with glass cleaner and a soft cloth.
- Glass: Clean with glass cleaner and a soft cloth, avoiding glass scrapers.
- Controls: Clean with hot soapy water and a damp cloth, but never with a wet cloth to avoid moisture ingress into the electronics.
- Safety Precautions for Cleaning: Emphasizes allowing the appliance to cool before cleaning, unplugging it or switching off the circuit breaker, and wearing protective gloves due to sharp edges inside. It strictly prohibits the use of high-pressure or steam cleaners.
- Bulb Replacement: Although not detailed, the manual mentions replacing faulty bulbs to prevent overloading of remaining bulbs. Defective LED lights must only be replaced by authorized personnel.
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