Simer Pumps 2905, 2955 owner manual Maintenance, Troubleshooting, Airlocks

Maintenance 5

AIRLOCKS:

When a pump airlocks, it runs but does not move any water. An airlock will cause the pump to overheat and fail.

This pump has a small hole in the side of the pump housing. See Figure 1. This is an anti-airlock valve. If you suspect an air- lock, insert a hat pin or a pipe cleaner into the anti-airlock hole to clean out the debris.

Troubleshooting

SYMPTOM	PROBABLE CAUSE(S)	CORRECTIVE ACTION
Pump won’t start or run.	Blown fuse or breaker.	If blown, replace with fuse of proper size or reset breaker.
	Low line voltage.	If voltage under recommended minimum, check size of wiring from
		main switch on property. If OK, contact power company or hydro authority.
	Defective motor.	Replace pump.
	Defective float switch.	Replace float switch.
	Float obstructed.	Remove obstruction.
Pump starts and stops	Backflow of water from piping.	Install or replace check-valve.
too often.	Faulty float switch.	Replace float switch.
Pump won’t shut off.	Defective float switch.	Replace float switch.
	Restricted discharge	Remove pump and clean pump and piping.
	(obstacle in piping).
	Float obstructed.	Remove obstruction.
Pump operates but	Low line voltage.	If voltage under recommended minimum, check size of wiring from main
delivers little or no water.		switch on property. If OK, contact power company or hydro authority.
	Worn or plugged impeller.	Replace pump.
	Anti airlock vent hole is plugged.	Clean out the vent hole with a hat pin or pipe cleaner.

For parts or assistance, call Simer Customer Service at 1-800-468-7867 /1-800-546-7867