Motor protection system, Maintenance and inspection, Monthly inspection – Atlantic Water Gardens SH1450 User Manual
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•	 In	case	of	excessive	vibration,	unusual	noise	or	odor,	turn	off	the	power	 
 immediately and consult your nearest dealer.
Motor Protection System
•	 The	pump	has	a	built-in	motor	protection	system.	The	following	reasons	 
 may cause the pump to stop automatically regardless of water level. 
Motor overheating
Excessive current
Change in voltage polarity
Open-phase operation or operation under constraint
•		 Repeating	cycles	of	stopping	and	restarting	will	damage	the	water	 
	 pump.	Do	not	continue	operation	at	low	lift,	low	water	level,	or	while	 
 the inlet is clogged with debris. Not only will performance suffer, but 
 also such conditions may cause noise, heavy vibration, and pump failure.
Maintenance and Inspection
•	 Regular	maintenance	and	inspections	are	a	necessity	for	continued	 
 efficient functioning. If any abnormal conditions are noticed, refer to the 
 section on Troubleshooting and take corrective measures immediately.
Monthly Inspection
•		Check	for	any	drop	in	performance.	Reduced	performance	is	usually	 
 caused by debris blocking the pump intake.
•	 Detach	the	power	cable	from	the	receptacle	or	turn	off	the	power	 
 supply (circuit breaker).
• Disconnect the pump discharge and remove the pump from the water.
•	 Remove	any	accumulated	debris	from	the	surface	of	the	pump,	inlet	 
 and impeller.
•	 Do	not	disassemble	the	pump	for	any	reason.	Disassembly	will	void	 
 the pump warranty. Refer operating and maintenance problems to a 
 qualified technician. 
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