BLUE M
Model ESP400 Industrial Oven
Page 33
Motors / Motor Shaft Seal:
Remove All Power From Chamber!
Note:
The motors are permanently sealed ball bearing types and require no lubrication.
Check motor shaft seal for deterioration.
Inspection Period: 6 Months
General Electrical Connections:
Remove All Power From Chamber!
Inspect inside the control panel and the machinery compartment for loose electrical connections, frayed
wires, loose components, or other potential problems.
Inspection Period: 6 Months
Electric Heaters:
Remove All Power From Chamber!
Inspect the electric heaters inside the chamber conditioning plenum and look for sagging elements, broken
insulators, or other defects.
Inspection Period: 6 Months
Main Controller Calibration:
The main temperature controller should be checked for temperature indicating accuracy, and for the proper
activation of limit or alarm outputs (when provided). Please reference the controller user manual for more
information.
Inspection Period: 1 Year
Limit Controller Alarm Circuitry:
The Temperature Limit Controller should be checked for indicating accuracy and for proper activation of limit
or alarm outputs. A quick test is as follows:
1.
Set the OTP control at a temperature lower than the Operating temperature.
2.
Run the unit in the normal operation mode. If the OTP circuit is performing properly, the unit should shut
down when the chamber temperature exceeds the OTP setpoint temperature. If the unit fails to
shutdown reduce the oven temperature to ambient and diagnose the OTP circuit.
3.
Press the OTP reset switch to and restore the unit to operation. The OTP controller should be set to
10°C higher than the unit’s normal operating temperature.
Please reference the controller user manual for more information.
Inspection Period: 6 Months