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Important Notice:
Beware of fire, never leave a
burning candle unattended!!
E105434#1
1 0 5 . 4 3 4
T h e r m o
f a n
Please Note
The OPITEC range of projects is not inten-
ded as play toys for young children.They are
teaching aids for young people learning the
skills of Craft, Design and Technolo- gy.
These projects should only be undertaken
and tested with the guidance of a fully qua-
lified adult. The finished projects are not sui-
table to give to children under 3 years old.
Some parts can be swallowed. Dan- ger of
suffocation!
1
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Summary of Contents for Opitec Thermo fan 105.434
- Page 1 T h e r m o f a n Please Note The OPITEC range of projects is not inten- ded as play toys for young children.They are teaching aids for young people learning the skills of Craft, Design and Technolo- gy.
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Page 2: Material Information
1. Product information: Article: electro-mechaniacal model Use: in Design Technology Key stage 3 2. Material Information: 2.1. Material: Pine (confirous), soft wood wood should be relativly dry before working Working: Pine can be sawn, planed, shaped and drilled mark out with measurements or use paper patterns Joining: screws Finish:... - Page 3 3. Tools: Saws: use a hacksaw for the holed metal strip Note! hold the work in a vice make sure that the blade is inserted with the teeth facing forward Filing: choose a suitable grade of file Note! files only cut on the foward stroke Finishing: use a glasspaper and block for all flat surfaces and loose paper for curves;...
- Page 4 4. Parts list Description Material Quantity Diagram Size Base Wood 15 x 150 x 200 mm Holder Metal 1 x 15 x 255 mm Shield metal 0.29 x 100 x 100 mm Motor 1.5V -4.5Volts Propellor 115mm dia Spring clip 23 - 27 mm Set screw M4 x 50/60 mm...
- Page 5 5. Exploded diagram Scale 1 : 2 6. Wiring diagram Bi metal Green Red bulb bulb 4.5V E105434#1...
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Page 6: Planning Overview
7. Planning overview 7.1 Planning and making the base 7.2 Making the supports 7.3 Assembling the bi-metal strip 7.4 Planning and bending the shield 7.5 Assembling the small parts 7.6 Wiring the circuit 7.7 Testing the circuit 7.1. Planning and making the base 7.1.1 Mark out or trace the pattern (page 13) on to the base 10-20 x 150 x 200mm 7.1.2 Mark out the holes for the screws, approx 5mm deep with a bradawl using a bradawl 7.1.3 Drill the 4.5mm dia hole through the base as shown, turn the base over and counter drill on the same spot a... - Page 7 7.2.2 From the holed metal strip (2) mark out and saw one piece 6holes long (approx 85mm) and clean up the ends with a file. Bend the contact strip for the bi-metal strip as shown in the diagram Tip: use protective soft jaws in the vice ! Bending pattern Bend here 7.2.3 From the holed metal strip (2) cut a piece 6 holes long (approx 85mm) Then bend it as shown to form the...
- Page 8 7.3. Making the bi-metal strip 7.3.1 Shorten the bi-metal strip to 110mm long and drill the hole in one end Note! remember the safety rules when drilling Ø 3 7.4. Planning and bending the shield 7.4.1 Mark out the measurements as shown on to the metal sheet, drill the holes and clean up the edges with a file Tip: use protective soft jaws in the vice when bending metal sheet...
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Page 9: Assembling The Parts
7.5. Assembling the parts 7.5.1 The holder for the fan is made up from the parts as shown 7.5.2 Screw the two battery contact holed metal strips (made in step 7.2.1) to the base (1) as shown Tip: do not insert the screws too tightly. They can be fully tightened after the cable has been added E105434#1... - Page 10 7.5.3 Fix the bi-metal strip (printed side down) to its holder with a nut and screw (19) and (18) and then mount (21) the holder, made in step 7.2.2, to the base Note: do not tighten the screw (21) fully until the wiring has been completed printed side 7.5.4 Mount the sets screws and M4 nuts on the contacts holders made made in steps 7.2.4 amd 7.2.4 as shown in the diagram...
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Page 11: Wiring The Circuit
7.5.5 Screw (20) the fan shield to the base as shown Push the propellor (5) on the motor shaft and insert the motor (4) into the spring clip 7.6. Wiring the circuit 7.6.1 For the motor connection take 2 lengths of different colour cable 100mm long and remove the insulation from both ends. - Page 12 7.7. Testing the circuit 7.7.1 Screw the red and green bulbs into the holders 7.7.2 Set the distance between the bi-metal strip and the contacts on the metal strips for the red and green lights. The contact screw for the green light should be adjusted so that it touches the bi- metal strip and the other screw so that there is a gap of 2mm.(step 7.5.4) 7.7.3 Place the battery onto the correct contacts on the base Note:...
- Page 13 Driling pattern Scale 1 : 1 Battery Contact strip Contact strip cable cable cable shield Holder strip for bimetal Bulb holder, red bulb Contact strip, red bulb cable Blind hole in the base shown in section D105434#1...