Hoshizaki 73168 service manual Power Switch ON, Rail Cooling Switch Normal or LOW Position

Power Switch "ON," Rail Cooling Switch "NORMAL" or "LOW" Position

When in the "NORMAL" position, RailFM operates continuously.

When in the "LOW" position, RailFM operates continuously when rail is cooling down and intermittently (per F9 setting) when rail cool down is achieved. See "II.D.4.a) Switch Settings" and "II.D.5. Service Menu."

2. Cabinet and

Cycle Steps 1. Start

•2-minute Comp delay timer starts

•6-hour DT starts

Initial startup begins here

2. Cool Down 3. Cool Down Achieved

Minimum 2 minute Comp delay if C and R were off

CTh and/or RTh reaches 3.6°F

(2°C) or more below setpoint

CTh and RTh in control

4.Cabinet Defrost

From 6 next page

RThor towarmssetpoint

CTh

To 4

next page

Rail Cooling

13

CabFM energized CLLV energized PH energized RailFM energized RLLV energized

C on	C off	C on
R on	R on	R off
CabFM energized	CabFM energized	CabFM energized
CLLV energized	Comp energized	CLLV energized
Comp energized	ConFM energized	Comp energized
ConFM energized	PH energized	ConFM energized
PH energized	RailFM energized	PH energized
RailFM energized	RLLV energized	RailFM energized
RLLV energized	CLLV de-energized RLLV de-energized

C off	C on
R on	R off
CabFM energized	CabFM energized
Comp energized	CLLV energized
ConFM energized	Comp energized
PH energized	ConFM energized
RailFM energized	PH energized
RLLV energized	RailFM energized
CLLV de-energized	RLLV de-energized

C and R off

CabFM energized PH energized RailFM energized RLLV energized CLLV de-energized Comp de-energized ConFM de-energized

•C on-CTh at or above setpoint

•C off-CTh has reached 3.6°F (2°C) or more below setpoint

•R on-RTh at or above setpoint

•R off-RTh has reached 3.6°F (2°C) or more below setpoint

Legend: C-cabinet cooling CabFM-cabinet fan motor Comp-compressor ConFM-condenser fan motor CLLV-cabinet liquid line valve CTh-cabinet thermistor DT-detrost timer DH-defrost heater DTh-defrost thermistor DTst-defrost thermostat PH-perimeter heater

R-rail cooling RailFM-rail fan motor RLLV-rail liquid line valve RTh-rail thermistor