Landcal Blackbody Source
Type R1200P
User Guide
Page 12
8 Maintenance
8.1 Routine servicing
The source is fully tested and evaluated before supply and should give years of
trouble free operation if the precautions outlined in 6.4 and 8.4 are followed. No
regular servicing or maintenance is required. The furnace outer surface may be
cleaned with a damp cloth. Do not allow water to enter the case. Do not clean
with organic solvents. In the unlikely event of a failure we would recommend
the source is returned either to a LAND company direct or to one of the LAND
distributors for repair. The instructions in Section 8.2 provide information for
the customer replacement of the heating element and insulation.
8.2 Fitting a replacement heating element/insulation package
The location of the terminal blocks on the insulation assembly is shown in Fig. 3a.
The replacement assembly (Part Number 135.164) is supplied with the
thermocouples in place. The assembly has undergone the standard test
procedure to ensure the correct positioning of the reference thermocouple.
To remove the old insulation assembly:
1) Remove the front and back panels (7 screws each end).
2) Refer to Fig. 3a Disconnect the mains cable terminals from the terminal
block.
3) Remove the top cover (3 screws on the left hand underside).
Fig. 3a Location of terminal blocks on insulation assembly (Rear View)
CA970261a
Reference thermocouple cable
(Numbered '2')
Power cable (White)
Earth cable - Version 1 only
(Yellow/Green)
Control thermocouple cable
(Numbered '1')
Power cable (White)
Power cable (Black)
