Then open the petcock on the bottom of the pump housing, making sure water comes out and the petcock valve is not frozen.
Next open the ball valve to the grout mixing tank 1/2 open and the same with the rinse line valve. Note: A ball valve in the fully open or closed position will trap water in or behind the ball housing and will freeze and break the valve housing.
Next walk out the rubber hose to the rinse line making sure all water has drained.
Next time the pump is used, make sure the pump has water in the pump housing before running pump to prevent shaft seal damage.
To Winterize the Piston Grout Pump
After pumping adequate clean rinse water through the piston pump, run piston pump for 5 to 10 seconds at maximum speed to purge out all water that is possible. Note: Do not run the pump longer than this or overheating the piston rubbers can occur and cause damage to piston rubbers. Disconnect the hose to the hose reel or grout line if equipped.
Put approximately 5 gallons of approved antifreeze (such as R.V. antifreeze, always use an antifreeze that is approved in your state) into the mixing tank. Pump this antifreeze through the 10′ 1″ line back into the mixing tank. Make sure that both cylinders are pumping fluid, if pump is only pumping on 1 cylinder the pump must be cleaned before proper winterizing can be done.
Put the 1 1/4″ ball valves in the 1/2 open position to be sure water is not trapped behind the ball that will cause the housing to freeze and split the valve.
Next time the pump is used, approximately 4 out of 5 gallons of antifreeze can be pumped into a 5 gallon bucket and reused.
To Winterize the Hose Reel
Unhook the hammer union at the hose reel to drain water; making sure that the hose from the grout pump to the hose reel is drained.
If air is available you may choose to blow the water out with air.
Another method is to walk all the grout hose off the reel and walk it out slowly making sure all the water is drained.
A 3rd method is to tie the end of the grout line back to one of the coils on the spool securely and rotate the reel approximately 8 to 10 R.P.M. and the hose will walk itself out on the reel. This will work rotating the reel in either direction. One way will walk the water back to the inlet union, and the other way will walk the water out the end of the grout line. Make sure not to rotate the reel too fast or it will not adequately drain all the water out of the grout line and could cause a frozen grout line.