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Design

The fans cases are made of high quality and high strength materials: ABC plastic (Ø100 200) and low combustible polypropylene (Ø250 315). Motor with impeller and terminal block are attached to the case with special clamps with latches, designed to be demounted without any special skills or instruments. Due to such design the maintenance of the fan is extremely simple. All the models are equipped with adjustable timer with turn off delay range from 2 to 30 minutes (TT...T). For easy connection and operation a power cord with a plug may be provided (TT…R).

Motor

Single phase motor on ball bearings has two speeds. For some dimension types the version of motor with more powerful features is available (TT…S). The temperature switches are provided for overload protection. Class of motor protection IP X4.

Design

The casing is made of high-quality durable ABS plastic (TT 100-200) or fire resistant polypropylene (TT 250-315). Motor with impeller and terminal box are fixed on the casing by means of special clamps with latches, designed in such a way as to ensure easy dismantling without any special skills or tools. Such design ensures easy service and maintenance access. All the models can be fitted with adjustable timer with turn-off delay from 2 to 30 minutes (TT...T). Power cord with plug can be provided for easy connection and operation (TT…R).

Motor

One-phase motor with ball bearings has two speeds. Some standard sizes have motors with more powerful features (TT…S). The motors are equipped with built-in overheating protection with automatic restart. Motor protection class IP X4.

Speed control

The two speed motor is controlled by means of the external speed control switch. For smooth speed control use symistor or autotransformer controller connected to the terminal for motor maximum speed.

Mounting

The fan can be mounted in any place of duct system and at any angle, vertically or horizontally. Several fans can be mounted in parallel to increase the air capacity or in series to increase the operating pressure. The casing is fitted with a mounting plate for wall mounting. Installation with special support bracket PTT 100…315 (not included in the equipment list) is also possible.
The mounting box can be installed in any position for easy installation and connection.