Roberts Gorden Combat HF 30 v4, Инструкция по установке, пусконаладке, обслуживанию и эксплуатации

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Page 57
CABINET HEATER
Section 8. Removal & Replacement of Parts
See Warnings at start of Section 7 before removal and replacement of parts.
8.1 The Burner and it's Components
To remove the burner from the heater:
Unplug the burner electrical supply from the heater.
Isolate the fuel supply at the inlet manual valve and disconnect the inlet fuel pipe.
Unscrew the nuts securing the burner mounting flange to the front of the heater.
Pull off the burner from the heater, retaining the gasket for reuse.
For removal of burner components, follow instructions in the Manufacturer's Information.
To refit the burner reverse the above, being careful to fit the gasket between the burner mounting flange and the heater.
Use a new one if necessary.
8.2 Direct On Line Main Fan Starter & Thermal Overload Unit
(Three Phase Models Only)
This assembly comprises two parts, ‘A’ the Contactor, and ‘B’ the Overloads (see Fig. 2.4), which may be changed
separately.
‘A’ - The Contactor: this is fixed by two diagonally opposite screws.
To remove: first remove the overloads as above, then remove the line connections to the top of the contactor (noting
the colour code) and the two coil connections at the top rear of the contactor.
Unscrew the fixing screws to remove the contactor from the panel.
To refit: reverse the above operations. Check rotation of fan following work on the contactor.
‘B’ - The Overloads: these are fixed only by the 3 load connections at the lower end of the contactor and are fitted to
Models 60 to 100 only.
To remove: unscrew the motor connecting wires from their terminals at the bottom of the assembly - Note the colour
code.
Disconnect the overload circuit connections near the overload reset button.
Disconnect the overload fixing and connecting screws at the bottom of the contactor.
Ensure that any replacement overload is of the correct rating and that it is reset as in 2.5.
8.3 Control Circuit Fuse (10 or 5 amp 1 ¼" long sand filled)
The control circuit fuse is removed by grasping firmly in the centre and pulling out of the spring clips.
To replace: push a new fuse into the spring clips.
To replace the holder, first remove the fuse, pull off the two tag connectors from either end and then unscrew the central
fixing screw.
To refit: reverse the above procedure, noting the locating peg on the rear of the holder, engages in the hole provided.