Dual-Pressure Switch
Connect manifold gauge set to high pressure service valve. Disconnect dual-pressure switch harness connector. Check continuity between dual-pressure switch terminals with system at specified pressures. See DUAL-PRESSURE SWITCH OPERATION table. If continuity is not as specified, replace dual-pressure switch.
DUAL-PRESSURE SWITCH OPERATION
| Application & psi (kg/cm2 ) | Continuity | |
|---|---|---|
| High Pressure | ||
| Increasing To 413-441 (29-31) | No | |
| Decreasing To 313-396 (22-28) | Yes | |
| Low Pressure | ||
| Increasing To 22-30 (1.5-2.1) | No | |
| Decreasing To 23-33 (1.6-2.3) | Yes | |