Sterling 238 User Manual

;  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? 

 

 

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.