Hoshizaki ROX-20TB2-U service manual Display

			X2
ON: positive OFF: negative			sw valve
			relay
X1	polarity sw	relay (10WB)	X6
			add salt
			output
			X10
	regeneration
	output signal
ON: excited	OFF: not		(12V)
		excited

ON: excited			X3		ON: excited
OFF: not		ON during			OFF: not
excited		electrolysis			excited	ON: excited
ON: excited	OFF: not	excited					OFF: not	excited
X7	inspection	output				X4	DC power	supply relay
ON: excited			X5	ON: excited
OFF: not			WV	OFF: not
excited			relay	excited
ON: excited			X11		ON: excited
OFF: not					OFF: not
			unused
excited					excited
ON:negative OFF:positive						ON: excited	OFF: not	excited

ON: excited	OFF: not	excited
X8	TDT right	pump

Fan motor OFF: off

ON: on

X9 TDT left pump

X14

polarity sw

relay (20TB)

Flow

control valve 1

ON: full Tank output OFF: not (20TB+tank) full

Unused

Unused

OFF

Always

X15	polarity sw	relay(20TB)	X13	ON: excited	X12	unused
ON: positive				OFF: not
OFF: negative			unused
				excited
Combination			Flow	Combination
			control
of 2 valves				of 2 valves
			valve 2
Always OFF					Always
						OFF
	Unused				Unused
Always			Unused	Always
OFF				OFF

Always	Unused	Always
OFF		OFF
Always OFF		Always OFF

Unused OFF

Always

Always OFF
Unused	valveoutputs

			Open: increasing flow rate, Stop: valve OFF
Stop	OFF	OFF
Open	OFF	ON
Close	ON	OFF	flow rate,
Brake	ON	ON	decreasing
	b2	C2	Close:
	valve 1	valve 2	stopping,

Display	Unused		Unused		Unused
C3		Unused	Always	Unused	Always
			OFF		OFF

26

Flow control

Flow control Flow control Brake: valve