Installation
Determining Proper Fluid Temperature
CAUTION
Operating the heater at its highest setting, over 180°F (82°C), for long periods of time decreases the heater life and can cause fluid to dry out; which can clog the heater and result in a poor finish.
Use the lowest temperature setting possible for maxi- mum heater life. Use the chart in FIG. 9 to determine the
To find your fluid’s Under-Boil temperature:
1.Pour a small sample into a
2.Measure and record the fluid temperature and vis- cosity using a No. 2 Zahn cup.
3.Heat water in a large container to 200°F (93°C). Place the sample in the water.
4.At every 10° temperature rise, measure and record the viscosity and temperature. Do this until solvents start boiling off and the viscosity starts to level off, usually
5.To find the temperature to use in your
a.Subtract the lowest viscosity reading from the highest one.
b.Multiply the result by 0.90.
c.Subtract the result from the highest viscosity reading. Find this number on your temperature and viscosity records.
| 100 |
|
|
|
|
|
|
|
|
|
|
|
|
| 90 |
|
|
|
|
|
|
|
|
|
|
|
|
cup | 80 |
|
|
|
| Heavy Lacquer |
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
Zahn | 70 |
|
|
|
|
| Medium Lacquer |
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| |
#2 | 60 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
with |
|
|
|
|
|
| Enamel |
|
|
|
|
| |
50 |
|
|
|
|
|
|
|
|
|
|
|
| |
seconds | 40 |
|
|
|
|
|
|
|
|
|
|
|
|
30 |
|
|
|
|
|
|
|
|
|
|
|
| |
Viscosity: |
|
|
|
|
|
|
|
|
|
|
|
| |
20 |
|
|
|
|
|
|
|
|
|
|
|
| |
10 |
|
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
| 0 |
|
|
|
|
|
|
|
|
|
|
| oC |
| 20 |
| 30 |
| 40 | 50 |
| 60 |
| 70 |
| 80 | |
| (70) | (80) | (90) | (100) | (110) | (120) | (130) | (140) | (150) | (160) | (170) | (180) (oF) | |
|
|
|
|
|
| Temperature |
|
|
|
|
|
|
FIG. 9: Reducing Viscosity: Under-Boil Method
12 | 309524N |