CRC MINUS 50
GENERAL DESCRIPTION
Coolant for electrical and electronic use. CRC Minus 50 is a non-flammable, inert dry coolant spray for maintenance, trouble shooting and repair. Used to cool down parts and components to temperatures below 0°C to a minimum of -50°C; the tracking of intermittent faults, the detection of hairline cracks, and the locating of defective components becomes easier.
2. FEATURES
Protects heat sensitive components from high temperatures during soldering and desoldering.
Facilitates precision fitting of metal parts : a short spray will shrink one part so a slip fit becomes possible.
Saves maintenance cost and downtime.
Non-flammable and inert.
No chemical attack of components.
Evaporates completely, leaving no residue.
Invaluable for testing thermostats and all systems responding to temperature changes.
3. APPLICATIONS
Testing of thermometers and thermostats.
Locating defective electrical parts.
Finding faulty connectors ...
Locating defective diodes , transistors ...
Shrink fitting / removal of bushes, bearings, spindles ...
Assembly / disassembly of tolerance equipment..
Checking of transistor ignition systems.
Trimming / machining of rubber bushes ...
Removal of chewing gum, adhesives, sweets ... from fabrics, curtains, carpets, chairs, etc (spray until gum is brittle and then break away).
Pre-cooling “dental” instruments.
4. DIRECTIONS
Let suspect circuit heat-up, spray one component at a time. Spraying of faulty component will give instantaneous change of output.
Hairline cracks in PC will be exposed by frosting up the copper circuitry.
Use extension tube for precise aiming and hard to reach areas.
A safety data sheet (MSDS) according EU directive 93/112 is available for all CRC products.
Note :
with sensitive or stressed plastic parts, the thermal stress induced by strong local cooling must be considered.
5. TYPICAL(*) PRODUCT DATA (**)
Appearance : colourless gas (***)
Flash point (open cup) : none
Specific gravity (liquid, 20°C) : 1,15
Vapour density (vs. air=1) : > 3
Boiling range : -24°C to -27°C
Heat of evaporation at boiling point : 290 J/ml
Vapour pressure (@ 20°C) : 460 kPa
Ozone depletion potential (vs CFC 11=1) : 0,00
Greenhouse potential (vs CFC 11=1) : 0,2
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