Moyer Diebel MH-6LM3, MH-6NM3, MH-60M3 technical manual Troubleshooting

TROUBLESHOOTING

TROUBLESHOOTING (Cont.)

CONDITION	CAUSE	SOLUTION
Insufficient pumped	Clogged pump intake screen	Clean
spray pressure	Clogged spray pipe	Clean
	Scrap screen full	Must be kept clean and in place
	Low water level in tank	Check drain-overflow assembly
	Pump motor rotation incorrect	Reverse connection between L1
		and L2 in Control Cabinet
	Defective pump seal	Contact Service Agent
Insufficient final rinse	Faulty pressure reducing valve	Clean or replace
or no final rinse	Improper setting on pressure	Set flow pressure at 20-22 PSI/
	reducing valve	138-151.8 kPa
	Clogged rinse nozzle and/or	Clean
	pipe
	Improper water line size	Have installer change to
		proper size
	Clogged strainer in fill valve	Clean or replace
Low final rinse	Low incoming water	Check the booster (MH60, MH6N)
temperature	temperature	be sure the thermostat is set to
		maintain180°F/82°C temperature.
		MH6L check incoming water is set
		Min. 120°F/49°C-140°F/60°C.
		Check valve to be sure it is clean
		and operating
	Defective thermometer	Check for proper setting or
		replace
Poor washing results	Detergent dispenser	Contact detergent supplier
	not operating properly
	Insufficient detergents	Contact detergent supplier
	Wash water temperature	See condition “Wash Tank
	too low	Water Temperature” above
	Wash arm clogged	Clean
	Improperly scraped dishes	Check scraping procedures
	Ware being improperly	Use proper racks. Do not
	placed in rack	overload racks
	Improperly cleaned	Unclog wash sprays and rinse
	equipment	nozzles to maintain proper
		pressure and flow conditions.
		Overflows must be open. Keep
		wash water as clean as possible.
	Heater elements	Clean and delime
	have soil/lime buildup

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