Priming The Pump - Waterax BB-4MD Owner's Manual

Priming the Pump

Before priming the pump, discharge hoses should be installed. Several options are
available to prime a pump when you are drafting water, depending on the priming
equipment you have.
Note:
The priming line must be connected to a port on the pump that allows the eye of the
impeller to completely fill with water. A shut off valve should also be placed between the
pump and the primer to shut off the priming line once the pump has been primed.
WATERAX Hand Primer: Connect hand primer
to discharge port and pump until water is drawn
into the pump.
Manual Priming:
1. Open the priming cap and fill pump with
water manually.
2. Firmly tighten priming cap.
3. Pump can also be primed by "jerking" the
suction hose until water flows from the
pump's discharge port.
Guzzler Priming:
1. Open the priming valve (located under the check valve on portable units).
2. On vehicle mount units, ensure that the discharge valves are closed.
3. Pump until water is drawn into the pump.
Electric Priming: See instructions for your electric primer. Note that most electric primer
motors are intended to be used only for a short duration of time (about 20 seconds). If
pump fails to prime, see the troubleshooting section.
Exhaust Priming: With the engine running (see Startup and Discharge section):
1. Open priming valve.
2. Adjust THROTTLE to full speed position.
3. Close and press down firmly on muffler-lever-
handle or pull priming knob (if supplied with a
panel mount control panel) until a solid
stream of water flows from priming ejector.
4. Close the priming valve and re-open the muffler-lever-
handle/butterfly valve. The check valve (on portable units)
will open automatically under the water pressure when
priming occurs.
5. Slowly open a discharge valve to validate that the pump has been primed. If pressure
does not build in the discharge hose, the pump has not been fully primed. The valve
should be closed and the pump primed again. Continue this process until the pump
has been fully primed.
6. Reduce throttle setting and allow engine to warm up for at least 2 minutes before
using full throttle.
Note:
Close the priming valve after priming. Failure to close the priming valve could cause
the pump to lose prime or water to be pumped through the priming system.
04/2015
WATERAX BB-4 Owner's Manual
Page 11
Priming
Port
Suction/
Intake
Port
Discharge Port
11