Spa Air Locks - Purging the Pump
When this happens there is probably an air-lock in the pump. This air-lock must be purged from the plumbing for the pump to operate normally.
To purge the pump, please follow these steps:
- Ensure the spa is filled 6 to 8 inches below the top of the spa.
- Remove the service panel to expose the water pump. Fig 8.1
The pipes entering and leaving the pump are connected with large plastic unions. To purge the air from the pump, one of these unions will be slightly loosened.
- Place a towel under the union to be loosened.
- Using large pliers, slightly turn the union nut counterclockwise. Fig. 8.2
This will produce a faint hissing sound of the trapped air escaping the pump. This will be followed by a small squirt of water which signals it is time to close the union by turning it back (clockwise).
- Do not over tighten the union. It is designed to be hand tight.
