2
Safety Information ..................................................................................................................................3
Alert Signals ..........................................................................................................................................3
Warnings ................................................................................................................................................3
Introduction ............................................................................................................................................5
Intended Use......................................................................................................................................5
General Usage ..................................................................................................................................5
Principles of Operation ......................................................................................................................5
General Specifications for Furnaces ......................................................................................................6
Environmental Conditions ..................................................................................................................6
Declaration of Conformity ......................................................................................................................7
Unpacking ..............................................................................................................................................8
Installation ..............................................................................................................................................9
Operation of Manual and Automatic Models ........................................................................................10
Manual Control Models (F21124, F21125, F21120, F21120-33)..........................................................10
Pyrometer ........................................................................................................................................10
Operation All Modes Single Set Point Termperature Control (F21130, F21130-33, F21135) ..............11
Single Set Point Controller ..................................................................................................................12
Single Ramp and Dwell........................................................................................................................16
Furnace Loading ..................................................................................................................................19
Preventive Maintenance ......................................................................................................................20
General Cleaning Instructions..........................................................................................................20
Troubleshooting....................................................................................................................................21
Maintenance and Servicing ..................................................................................................................24
To Replace Vestibule End Caps ......................................................................................................24
To Replace The Heating Element Tube (Without Case Assembly) ................................................24
To Replace Pyrometer (Manual Control Models) ............................................................................25
To Replace Manual Temperature Control Switch ............................................................................25
To Replace Furnace Chamber ........................................................................................................26
To Replace Type K (Chromel/Alumel) Thermocouple (Manual Control Models) ............................26
To Replace Type Platinel II Thermocouple (Single Set Point Control Models) ..............................27
Replacement Parts List ........................................................................................................................29
Ordering Procedures ............................................................................................................................29
Wiring Diagrams ..................................................................................................................................30
Warranty ..............................................................................................................................................32
Table of Contents
