This document describes the Nagold by Häfele Built-In Combination Steam Oven with Hot Air, model J34 CST (538.01.011). It serves as an operation manual, providing essential information for safe and effective use, installation, and maintenance of the appliance.
Function Description:
The Nagold J34 CST is a versatile built-in combination oven designed for household use. Its primary functions include steam cooking, convection cooking, grill cooking, grill fan cooking, and a combination of convection and steam. It also features auto cook programs for both steam and non-steam dishes, a defrost function, and a preheating function. The oven utilizes modern electronic control to adjust cooking parameters, aiming to meet diverse cooking needs. A key feature is its ability to combine steam and hot air, offering a broader range of cooking possibilities compared to conventional ovens.
Important Technical Specifications:
- Model: J34 CST (538.01.011)
- Rated Voltage: 220-240V~50/60Hz
- Rated Output Power (Grill): 1200W
- Rated Output Power (Convection): 1750W
- Rated Input Power (Steam): 1500W
- Rated Input Power (Maximum): 3250W
- Oven Capacity: 34L
- External Dimensions: 595 X 550 X 454 mm
- Net Weight: Approx. 27 kg
Usage Features:
The oven features a control panel with sensor keys for various operations.
- Clock Setting: Allows users to set the current time, with options for 1-minute and 10-minute adjustments.
- Grill Cooking: Offers three grill power levels (MIN, level 2, MAX) and allows setting cooking time up to 90 minutes.
- Convection Cooking: Provides a temperature range from 50°C to 230°C and a cooking time of up to 5 hours.
- Grill Fan Cooking: Combines grill and fan functions, with a temperature range from 35°C to 180°C and cooking time up to 5 hours.
- Auto Cook: Includes pre-programmed menus for both steam (S01-S36) and non-steam (P01-P12) dishes. Users can select menu types and adjust cooking time or weight as needed. The steam auto menu includes an automatic water pump withdrawal process after cooking.
- Defrost Function: Offers an auto defrost mode where users can select the defrost weight.
- Preheating Function: Available for Convection and Grill fan modes. The oven beeps three times when the set temperature is reached. Food should only be placed in the oven after preheating is complete.
- Steam Function: The main heating function. Users can select temperatures from 50°C to 100°C and set cooking time up to 90 minutes. The display shows the current water level (Water, lack of water, full of water).
- Convection + Steam Function: Combines hot air and steam. Users can select temperatures from 180°C to 220°C and set cooking time up to 90 minutes. Steam percentage can also be adjusted.
- Lock-out Function for Children: A safety feature that locks the control panel to prevent accidental operation. It is activated by pressing and holding a specific button for 3 seconds.
- Water Tank Access: A dedicated button allows opening the water tank at any state.
Maintenance Features:
- Initial Cleaning: Before first use, all accessories should be removed and washed. The oven interior should be wiped with a damp cloth, and then heated empty to banish odors. After heating, the oven should be cleaned with a neutral detergent solution and hot water, then wiped dry.
- Regular Cleaning: The oven cavity should be cleaned after each use with a slightly damp cloth. Accessories should be cleaned in soapy water. The door frame, seal, and neighboring parts require careful cleaning with a damp cloth. Harsh abrasive cleaners or sharp metal scrapers should not be used on the oven door glass.
- Steam Function Cleaning: After using steam auto menus, water in the cavity and on the door panel needs to be cleaned up. The water pump withdraws water back to the tank, and if the tank is full, the system will beep to remind the user to clean it.
- Auto Scale Removal Function: This function is recommended for descaling the steam oven. It involves adding a descaling agent (sodium citrate) to 1000ml of fresh water in the water tank and running a specific program. After the program, the water tank needs to be emptied, cleaned, refilled with fresh water, and the process repeated. The descaling process should not be interrupted.
- Troubleshooting: The manual provides a troubleshooting guide for common issues such as the oven not starting, not heating, or making noise, along with possible causes and remedies.
- WEEE Directive Compliance: The product is designed for separate collection and treatment according to the Waste of Electrical and Electronic Equipment (WEEE) directive, emphasizing that it should not be disposed of with household waste.
Important Safety Instructions:
The manual stresses several safety precautions:
- Do not operate the oven with the door open or if the door/seals are damaged.
- Do not heat sealed containers as they may explode.
- Only competent persons should perform service or repair operations.
- The appliance can be used by children aged 8 and above and persons with reduced capabilities if supervised and instructed. Children should not play with the appliance or perform cleaning/maintenance unsupervised.
- Keep the appliance and its cord out of reach of children under 8.
- Clean the oven regularly and remove food deposits.
- Use only utensils suitable for steam ovens.
- In case of smoke, switch off/unplug the appliance and keep the door closed.
- Do not overcook food or use the oven cavity for storage.
- Remove metal items from paper/plastic containers before placing them in the oven.
- Install the oven according to instructions, ensuring proper grounding.
- Do not store or use outdoors, near water, or in wet basements.
- Accessible surfaces may become hot during operation; keep cords away from heated surfaces and do not cover vents.
- Failure to maintain cleanliness can degrade the surface and affect appliance life.
- Stir/shake contents of feeding bottles and baby food jars and check temperature before consumption.
- The appliance is not intended for operation by external timers or separate remote-control systems.
- Steam cleaner is not to be used.
- Do not carry the stove by the handle as it is overweight and handles can break.
- Clean water in the receiving tank, oven interior, and water tank after each use.
- Do not use paper cups and plastic containers below 120 degrees; glass, ceramic, and stainless steel utensils are suitable.
- The appliance is intended for full fitting in a kitchen, not as a tabletop or inside a cupboard.
- The fitted cabinet must not have a back wall behind the appliance.
- A gap of at least 100 mm must be maintained between the wall and the unit above.
- The cabinet needs a ventilation opening of 250 cm² on the front.
- Ventilation slots and intakes must not be covered.
- Units must be heat-resistant up to 90°C.
- The appliance must be properly installed and earthed by a qualified technician.
- Adapters, multiway strips, and extension cords are not to be used.
- The appliance should be pushed into the box, centered, and fastened with screws. The connecting cable should not be kinked.
- The gap between the worktop and the appliance must not be closed by additional battens.
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