Despatch LCC1-87NV-2 - Manual (Page 40)

31
APPENDIX
Troubleshooting
Equipment operating for long periods may have occasional problems. Below are
possible problems and suggested solutions. If you have a problem not listed and do
not know what to do, contact Despatch Industries at our toll-free Help Line
(800-473-7373).
Difficulty
Probable Cause
Suggested Remedy
Failure to heat
No power
Check power source and/or oven and wall fuses.
Burned out heating
element
Replace element (see warranty statement).
CONTROL instrument
malfunction
See troubleshooting information in CONTROL
instrument manual.
Loose wire connections
Disconnect power and check connections behind
control panel.
Slow heat up
Improperly loaded
Reduce load or redistribute load in chamber
Low line voltage
Supply sufficient power and proper connections.
Check to see if circuit is overloaded.
Heating elements
Replace burned out element(s) (see warranty
statement)
240 volt oven is connected
to a 208 volt line.
Consult with factory.
Fan motor failure
Replace fan motor.
Water flow in optional
cooling coil.
Shut water off.
Filter clogged
Replace filter (see section on HEPA filter
Frequent heater
process. element
burn out
Harmful fumes generated
by load
Increase vent opening or discontinue
Overheating oven
Do not operate over 260+ C (500+ F)
Excessive dust build up in
filter
Replace filter (see section on HEPA filter)
Erratic or inaccurate
temperature
CONTROL instrument
malfunction
See troubleshooting information in CONTROL
instrument manual.
Inaccurate
temperatures
CONTROL miscalibration
See troubleshooting information in CONTROL
instrument manual.
Excess surface