C) Pump-Out Timer (S4 Dip Switch 3 & 4) - Hoshizaki KM-515MAH Service Manual

c) Pump-Out Timer (S4 dip switch 3 & 4)
The pump-out timer is factory-adjusted, and no adjustment is required. Never
adjust the pump-out timer's harvest timer (T2) for a time frame less than 150
seconds.
The pump-out timer's harvest timer (T2) acts in place of the harvest timer (S4 dip switch
1 & 2) during the pump‑out cycle. On KM‑515M_H models, the pump out occurs every
cycle.
T1 - When the freeze cycle is complete, the pump motor stops for 2 seconds, then the
pump motor re-starts in the opposite direction and the pump-out cycle begins. The pump
motor drains the water tank for the time determined by the pump-out timer (T1).
T2 - The pump-out timer's harvest timer (T2) starts counting when the thermistor reads
48°F (9°C) at the evaporator outlet. Once the 10/20 second pump-out timer (T1) is
complete, the pump motor stops and the inlet water valve energizes. The harvest cycle
continues until the pump-out timer's harvest timer (T2) terminates.
No adjustment is required under normal use, as the pump-out timer's harvest timer (T2)
is adjusted to the suitable setting. However, a setting longer than the factory setting
may be advised in cases where the flush provided at harvest needs to be prolonged for
extra cleaning. Before changing this setting, contact HOSHIZAKI Technical Support at
1-800-233-1940 for recommendations. Keep in mind that setting the pump-out timer's
harvest timer (T2) to a longer setting will decrease 24 hour production. Never adjust the
timer for a time frame less than 150 seconds.
T1: Time to drain the water tank
T2: Harvest timer at pump out
Dip Switch Setting
No. 3 No. 4
OFF OFF
ON OFF
OFF ON
ON ON
CAUTION
Time (seconds)
T1
T2
10 150
10 180
10 120
20 180
21
Inlet Water
Valve
Closed
Closed
Open
Closed