Carbolite HRF 7/22 Installation, Operation & Maintenence Manual

8, HRF 8 MF05 5.5 Thermocouple Replacement Disconnect the furnace from the supply, and remove the furnace back panel. Make a note of the thermocouple connections. The negative leg of the thermocouple is marked blue. Compensating cable colour codings are: Negative p…

4, HRF 4 MF05 Electrical Connections Connection by a qualified electrician is recommended. Model HRF 7/22 is designed for use on a single phase A.C. supply, which may be Live to Neutral non-reversible, Live to Neutral reversible or Live to Live. Check the furnace rating lab…

10, HRF 10 MF05 CIRCUIT DIAGRAMS 7.1 HRF 7/22 - no overtemperature 7.2 HRF 7/22 - with overtemperature Supply ligh t Instrument Switch temperature controller thermocouple SSR e l e m e n t (s) hea t on F1 F2 N L …

5, HRF MF05 5 OPERATION The instructions for operating the temperature controller are given in a separate manual. If the furnace is fitted with a time switch, see also the supplementary manual MS03. If cascade control is fitted, see the supplementary manual MS07. 3.1 Ope…

9, HRF MF05 9 FAULT ANALYSIS A. Furnace Does Not Heat Up 1. The HEAT light is ON Æ The heating element has failed Æ Check also that the SSR is working correctly 2. The HEAT light is OFF The controller shows a very high temperature or a code such as S.br …

6, Carbolite HRF 7/22 HRF 6 MF05 MAINTENANCE 4.1 General Maintenance No routine maintenance is required other than removal of soot deposits mentioned in 3.2 and the occasional replacement of consumable items. The furnace outer surface may be cleaned with a damp cloth. Do not allow wate…