BLUE M
Model ESP400 Industrial Oven
Page 8
3.3 Conditioning
Functions
Heating is achieved by recirculating oven air through open air nichrome wire heater elements in the
conditioning plenum. The plenum is located in the bottom of the chamber.
Cooling is achieved by opening the intake and exhaust dampers.
Air flow is generated by a centrifugal blower wheel mounted in the conditioning plenum. The blower
wheel is directly driven by an externally mounted motor. A horizontal airflow type system is employed.
A variable air management system allows variation from single air pass mode to full air recirculation
mode. Indented scales are scribed into the intake and exhaust damper pivot assemblies.
3.4
Equipment and Control Features
Partlow 1160+ Temperature Controller:
Temperature conditions are controlled by a Partlow 1160+ Temperature Controller, which uses a Type J
thermocouple for temperature measurement. The 1160+ is a versatile single channel non-profiling type
controller that features one universal type input and time proportioned control for heating. Advanced
communication, display interface, and configuration software improvements have been added to the 1160+.
Optional communications can be provided with RS-485 type serial communications (2 wire) and user-
selectable Modbus or ASCII protocol.
Alternate Temperature Controller - - Partlow 1166:
The alternate Partlow Model 1166 Temperature Controller may be employed to control your heating process.
This controller is a single channel profiling type that features a capacity of 4 programs with up to 16 steps in
each program. An event output is included that can be programmed ON of OFF at the beginning of each
step. A Type J thermocouple is used for temperature measurement.
Optional communications can be provided with RS-485 type serial communications (2 wire) using Modbus /
RTU protocol.
Overtemperature Protection:
Overtemperature protection is provided with a Partlow 1161+ High Limit Controller, which serves as a high
heat limit cutout. This controller will shut down the heat control system and blower motor when a high heat
limit is detected.
