Department of Chemical Engineering, Veer Surendra Sai University of Technology Burla
12
ΔX = Thickness of liquid, mm = 18 mm
PRECAUTIONS & MAINTENANCE INSTRUCTIONS:
1. Use the stabilize A.C. Single Phase supply only.
2. Never switch on mains power supply before ensuring that all the ON/OFF switches
given on the panel are at OFF position.
3. Voltage to heater starts and increases slowly.
4. Keep all the assembly undisturbed.
5. Never run the apparatus if power supply is less than 180 volts and above than 240
volts.
6. Operate selector switch of temperature indicator gently.
7. Always keep the apparatus free from dust.
8. Testing liquid should be fully filled.
There is a possibility of getting abrupt result if the supply voltage is fluctuating or if the
satisfactory steady state condition is not reached.
TROUBLESHOOTING:
1. If electric panel is not showing the input on the mains light. Check the fuse and also
check the main supply.
2. If D.T.I displays “1” on the screen checks the computer sockets if loose tight it.
3. If temperature of any sensor is not displays in D.T.I check the connection and rectify
that.
4. Voltmeter showing the voltage given to heater but ampere meter does not. Tight the
heater socket & switch if ok it means heater burned and replace that.
REFERENCES:
1. Holman, J.P., “Heat Transfer”,8
th
ed., McGraw Hill, NY, 1976.
2. Kern, D.Q., “Process Heat Transfer”, 1
st
ed., McGraw Hill, NY, 1965.
3. Perry, R.H., Green, D.(editors), “Perry’s Chemical Engineers’ Handbook”, 6
th
ed.,
McGraw Hill, NY, 1985.
4. McCabe, W.L., Smith, J.C., Harriott, P., “Unit Operations of Chemical
Engineering”, 4
th
ed. McGraw Hill, NY, 1985.
5. Coulson, J.M., Richardson, J.F., “Coulson & Richardson’s Chemical Engineering
Vol. - 1”, 5
th
ed., Asian Books ltd., ND, 1996.