1. Introducció
The Manrose MF100T is a 100mm inline mixed flow extractor fan designed for applications requiring high airflow and low noise levels, typically in bathrooms. This model includes an adjustable run-on timer function, allowing the fan to continue operating for a pre-set duration after the main light switch is turned off. It is suitable for use with both rigid and flexible 100mm diameter ducting.
The fan features high-quality ball bearing motors, rated for a minimum of 30,000 hours or 3 years of continuous operation. It offers three speed settings, which are selected via an internal dip switch during installation.

Figura 1: Manrose MF100T 100mm Inline Bathroom Extractor Fan. This image shows the compact, cylindrical design of the fan unit, suitable for in-duct installation.
2. Informació de seguretat
Important: Read all instructions carefully before installation and operation. Retain this manual for future reference.
- Installation must be carried out by a qualified electrician in accordance with current wiring regulations and building codes.
- Ensure the power supply is disconnected at the mains before commencing any installation, maintenance, or cleaning.
- Aquest aparell no està pensat per ser utilitzat per persones (inclosos nens) amb capacitats físiques, sensorials o mentals reduïdes, o amb manca d'experiència i coneixements, tret que hagin rebut la supervisió o instruccions sobre l'ús de l'aparell per una persona responsable de la seva seguretat.
- Els nens han de ser supervisats per assegurar-se que no juguin amb l'aparell.
- No feu funcionar el ventilador si alguna peça està danyada.
- The fan is designed for indoor use only and should not be exposed to direct water spray or extreme temperatures.
- This product is Class II double insulated, meaning no earth connection is required for the unit itself. However, all wiring must comply with local regulations.
3. Configuració i instal·lació
3.1 Desembalatge
Carefully remove the fan unit from its packaging. Inspect for any signs of damage. The box should contain the MF100T fan unit and this instruction manual.
3.2 Muntatge
The MF100T fan can be mounted in various positions within a ducting system (e.g., in a loft space, ceiling void, or wall cavity). It is suitable for use with 100mm diameter rigid or flexible ducting. The fan assembly is designed for easy removal from rigid ducting installations for maintenance.
- Secure the fan unit firmly to a stable surface using appropriate fixings. Avoid mounting directly to rafters without vibration isolation to minimize noise transmission.
- Connect the 100mm ducting to both inlet and outlet spigots of the fan. Ensure all connections are airtight using duct tape or appropriate clamps to maintain optimal performance and prevent air leakage.
3.3 Connexió elèctrica
ADVERTIMENT: Electrical installation must be performed by a qualified electrician. Ensure power is isolated before proceeding.
The MF100T requires a vida permanent, a switched live, i a neutral connection (3 wires excluding earth) at the fan position for the timer functionality to operate correctly. This typically involves connecting to a fused spur with a 3 Amp fuse and a contact separation of at least 3mm in all poles.
- Permanent Live (L): Provides continuous power to the fan's timer circuit.
- Switched Live (LS): Connects to the room's light switch. The fan activates when this live is present (light is on).
- Neutre (N): Common return path for the electrical circuit.
- Terra: Not required for the fan unit itself as it is Class II double insulated.
Use solid core wiring of at least 1mm². Ensure terminals are securely tightened.
3.4 Speed Settings Adjustment
The fan has three speed settings (Low, Medium, High). These are selected via an internal dip switch located within the wiring compartment. To change the speed setting:
- Ensure power to the fan is disconnected at the mains.
- Open the wiring compartment cover (usually secured by screws).
- Locate the dip switch. Refer to the internal diagram or markings for specific switch positions corresponding to Low, Medium, and High speeds.
- Adjust the dip switch to the desired speed setting.
- Close the wiring compartment cover securely before restoring power.
3.5 Ajust del temporitzador
The run-on timer can be adjusted to control how long the fan continues to operate after the switched live supply is removed (e.g., when the room light is turned off). The timer setting is typically adjusted via a small potentiometer (rotary dial) inside the wiring compartment.
- Ensure power to the fan is disconnected at the mains.
- Open the wiring compartment cover.
- Locate the timer adjustment dial. It may not have precise markings, requiring trial and error to achieve the desired run-on time.
- Use a small screwdriver to carefully turn the dial. Turning clockwise usually increases the time, and counter-clockwise decreases it.
- Close the wiring compartment cover securely before restoring power and testing the timer.
4. Instruccions de funcionament
The Manrose MF100T fan is designed for automatic operation in conjunction with your room's lighting circuit.
- Activació del ventilador: When the room light switch is turned ON, the fan will start operating at the pre-selected speed.
- Funció de temporitzador: When the room light switch is turned OFF, the fan will continue to run for the duration set on its adjustable run-on timer. After the set time has elapsed, the fan will switch off automatically.
This functionality ensures effective ventilation and moisture removal even after the room is vacated, helping to prevent dampla condensació.
5. Manteniment
Regular cleaning and maintenance will ensure the longevity and optimal performance of your Manrose MF100T fan.
- Desconnexió d'alimentació: Always ensure the power supply to the fan is completely disconnected at the mains before attempting any cleaning or maintenance.
- Neteja exterior: Wipe the exterior surfaces of the fan unit with a soft, damp drap. No utilitzeu productes de neteja abrasius, dissolvents ni productes químics agressius.
- Neteja de l'impel·lent: Periodically, it may be necessary to clean the fan impeller blades to remove dust and debris buildup, which can reduce efficiency and increase noise.
- Desconnecteu l'alimentació.
- Carefully remove the fan assembly from the ducting (if installed with easy-removal features).
- Gently clean the impeller blades with a soft brush or cloth. Avoid bending or damaging the blades.
- Reassemble the fan, ensuring all connections are secure.
- Inspecció de conductes: Periodically check the ducting for any blockages, damage, or excessive dust accumulation. Clean or repair as necessary.
6. Solució De Problemes
If you experience issues with your Manrose MF100T fan, refer to the following common problems and solutions:
| Problema | Causa possible | Solució |
|---|---|---|
| Fan does not start when light is switched on. | No power supply; incorrect wiring; faulty light switch; internal fault. |
|
| Fan runs continuously and does not switch off. | Timer set to maximum; faulty timer circuit; switched live always active. |
|
| Fan is excessively noisy. | Loose mounting; debris in impeller; damaged impeller; ducting issues. |
|
| Fan performance is poor (low airflow). | Incorrect speed setting; blocked ducting; dirty impeller; air leakage. |
|
7. Especificacions
| Característica | Detall |
|---|---|
| Marca | Manrose |
| Model | MF100T |
| Diàmetre del conducte | 100 mm |
| Air Flow Capacity (Max) | 245 Cubic Metres Per Hour (68 litres per second) |
| Nivell de soroll (màx.) | 25 Decibels (at 3m) |
| Wattage | 25 watts |
| Nombre de velocitats | 3 (selectable via dip switch) |
| Tipus de motor | Ball Bearing, Long Life |
| Dimensions del producte (P x A x A) | 20D x 31W x 25H centímetres |
| Material | Plàstic |
| Seguretat elèctrica | Class II - Double Insulation (No Earth Required) |
| Compliment | BEAB Approved, CE Approved |
| Característiques especials | High Velocity, Built-in Run-on Timer |
8. Garantia i assistència
8.1 Garantia
The Manrose MF100T fan is warranted for a minimum of 3 anys from the date of purchase, covering defects in materials and workmanship. This warranty is valid provided the unit has been installed and operated in accordance with the instructions in this manual and local electrical regulations. Please retain your proof of purchase for warranty claims.
La garantia no cobreix els danys causats per una instal·lació incorrecta, un mal ús, negligència, reparacions no autoritzades o el desgast normal.
8.2 Suport tècnic
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please contact Manrose customer support. Contact details can typically be found on the official Manrose weblloc web o a l'embalatge del producte.



