Base Products Corporation www.basepump.com 800 554 1426 page
Models: RB750, HB1000, CB1500 Copyright by Base Products Corporation 2015 Rev. May/2015
Troubleshooting
Unit does not pump at all:
Make sure water supply valves to the pump and to the whole house are open completely.
Confirm that there is adequate water flow: Perform the 5-gallon bucket test. (See page 1 #2. Household Water Flow)
Unit does not pump adequately:
Low water pressure: Municipal water pressure must be 40 lb. PSI minimum at pump location.
Low water flow: Minimum water supply piping must be ½” and 7 gallons per minute (See page 1, #2).
Restrictions: Piping kinks or restrictions such as water conditioners, filters, globe valves, etc. will prevent Basepump
from operating.
Suction screen must be clear of debris or obstruction and suction pipe must be free of any leaks.
Pump does not shut off:
Timing Knob maybe closed. See “Adjusting the Timing Control” section on page 8.
Timing Control maybe clogged. Remove tube with procedure below:
Remove the short piece of tube from side outlet of timing Knob (with one hand PUSH in retainer ring that holds the
tube in place and with the other hand PULL out tube). Turn on water to the pump. If water comes out of the opening, it
is clear. If not, open the knob (counterclockwise or left) till it does. If it stops turning (don’t force it) and no water has
come out, it is likely plugged. It can be removed from the Ejector using a small wrench counterclockwise on the base
nut. Turn off the water, remove it, check it for debris, solder, etc. Verify that turning the knob moves the inner parts up
and down freely. Replace timing control and refer to page 8. If necessary, call the factory for a replacement.
Pump does not turn on:
Timing Knob maybe opened too far. See “Adjusting the Timing Control” section on page 8.
Make sure all water supply valves to the pump are fully open.
Check for a clogged or frozen discharge pipe.
Check for a pinched Transfer Tube. Water drains from Float Port above float ball when lifted; stops when it is down.
If nothing’s pinched and no water exits the Float Port when ball is lifted, turn off the water supply to the pump and
remove the tube from the top of the Float Assembly (PUSH in the plastic ring while you PULL out the tube). Point the
end of the tube into the sump and turn the water on to the pump. If water shoots out of the tube and the pump turns
on, then it appears the float is the problem. Call the factory for support and/or replacement.
If no water comes out, check the other end of the Transfer Tube at the small tee on top of the Main Valve the same
way: turn off water, pull out tube, turn on water, check for water coming out and pump turning on. If not, go to the
other side of the tee on the short piece of tube, same thing. If not, check the timing control connection, same thing. If
none of this turns the pump on, call the factory for tech support.
Pump Leaks:
Valve cover leaks or “spits” water upon shut-off: Securely and evenly tighten the 6 screws on top that hold the cover
down. If this does not solve the problem, excessive water pressure may be the cause. Check the house water
pressure to confirm and refer back to Page 1. If this still occurs, you will need to move your tee-in point to a location
downstream from the PRV or call us for a “point of use” PRV.
Thin transfer tube leaks at any push fitting: Turn off water supply valve. Lift float ball to relieve pressure. With one
hand PUSH in release ring on the fitting while with the other hand PULL out the tube. (See pg. 8) Using scissors or
sharp utility knife, snip off 1/2” of tube to create a fresh, clean, square-cut end. Push newly cut end back into fitting
until you feel it bottom out and turn the water supply valve back on. If it still leaks, contact the factory.
Pump makes noise:
Note: This pump does not run silently; it is very powerful and some noises will occur normally during each phase of
operation depending on water flow, pressure, piping, etc.
Secure all piping and if needed, place insulating material between the pump, pipe, and joist to deaden any particularly
noisy areas.
If water hammer is experienced (banging in the pipes upon shutoff), this will not damage the pump. You may install a
water hammer arrester in the water supply pipe before the ejector to reduce the noise and vibration.
In some cases, the check valve on the base of the Ejector will thump or flutter as the valve shuts off and air exits the
system. This is normal.
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