Pro Rider Operations Manual
Rev. 08/2016
Page | 28
Catalyst Pump - Air Lock:
DANGER: Fluids under High Pressure. Before performing any service and repair
on this equipment, be sure to relieve air and fluid pressure.
DANGER: Always wear appropriate eye protection when working with this equipment.
WARNING: When removing hoses, place a rag over the hose before loosening it.
What is an Air Lock?
An air lock is an air bubble in the catalyst pump that prevents catalyst flow. The piston
body moves inside the bubble of air instead of pumping catalyst.
If you have determined that there is an air lock in your catalyst pump, follow the
procedures in this section.
1.
Relieve line pressure from the catalyst pump by locking the gun open over an
empty bucket. Leave the gun in this position.
WARNING: Relieve pressure from the catalyst pump before continuing.
2.
Remove the catalyst hose from the nipple on the catalyst pump.
WARNING: When removing hose, place a rag over the hose and fitting before
loosening it.
3.
Remove the quick pin from the catalyst bearing block and upper slave arm.
4.
Tilt the pump toward the resin pump to release the bubble.
NOTE: If the bubble does not appear in the inlet tube, remove the lower quick pin
and turn the pump upside-down.
5.
Slowly hand-pump the catalyst into a suitable container until catalyst spurts from the
nipple an equal amount on both the upstroke and down stroke.
6.
Reconnect the catalyst hose to the nipple.
7.
Hand-pump the catalyst pump until catalyst comes out through the gun.
8.
Install the pump and quick pin into the slave arm.
9.
Close the gun
