Figure 15 The Welch Dry Piston Pump
Screws | Indentation |
| |
| (Low Ballast) |
Restrictor Plate | Indentation | |
(High Ballast) | ||
| ||
| Indentation | |
| (Alignment Guide) |
Figure 16 Oil Drain Kit with Ballast Control
6Turn the switch on the vacuum pump to the On position.
54 | Operation and Maintenance Manual |
