Sterlco SPL Series Powder Hopper Loader - Manual (Page 27)

Powder Hopper Loaders Page 27
5 Operation
5-1 Pre-Startup Checklist
; Are all electrical connections correct, secure, and to code?
; Is the compressed air connection secure and safe?
; Is the receiver level and mounted securely?
; Are the flex hose and pick-up wand secure?
; Is the flexible hose properly grounded?
; Can the material level switch activate without obstruction?
; Can the material discharge valve swing without
obstruction?
5-2 Operating Sequence
1. Blowback sequence.
2. Motor starts.
3. Flapper discharge valve seals under vacuum.
4. Material conveys.
5. Vacuum receiver fills.
6. Vacuum timer times out.
7. Motor stops.
8. Blowback sequence begins, the flapper discharge valve
opens under the weight, and material dumps.
Steps 1 through 8 repeat automatically.
If the level switch remains open, the receiver loader remains idle
until the material level in the bin drops and frees the
counterbalanced dump valve. Steps 1 through 8 in the loading
sequence as listed above then resume automatically.