SPX HPD Series, Инструкция по эксплуатации

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9. Heat Low Temperature
a. RTD3 is used to detect Heater Low
Temperature.
b. Alarm if the heater temperature is less than 250°F
(121°C) within 15 minutes after the Heat Cycle is
initiated (15 minute delay also applies after power
recovery).
c. On alarm condition, display local alarm and de-
energize common alarm relay.
d. This alarm is self-clearing.
10. Cooling Alarm - Heater High Temperature
a. RTD3 is used to detect Heater High
Temperature.
b. Alarm when heater temperature exceeds 250°F
(121°C) when the sequence is in the second
stage of the COOLING CYCLE (i.e. 30 minutes
after cooling starts.
c. On alarm condition, stop cycle sequence, display
local alarm and de-energize common alarm
relay.
d. This alarm must be manually reset.
11. Heater Over-Temperature
a. RTD3 is used to detect Heater Over-Tempera-
ture.
b. Alarms anytime that the Heater temperature
exceeds 650°F (343°C).
c. On alarm condition, de-energize heat cycle, stop
cycle sequence, display local alarm and de-ener-
gize common alarm relay.
d. This alarm must be manually reset.
Alarms for Optional Devices
12. Energy Management -
a. High Humidity Alarm:
i. Measured moisture level exceeds the air alarm
value entered through the Program Mode.
b. Humidity Sensor:
i. Under-range: RH% < -15%
ii. Over-range: RH% > 115%
c. RTD:
i. Over-range: Temperature above 448°F
(231°C)
ii. Under-range: Temperature below -20°F
(-28°C)
d. On alarm condition:
i. Local alarm is displayed and the common
alarm relay is de-energized.
ii. If the dryer is set up for Energy Management
Control, the dryer sequence continues, but
bypasses the “HOLD” step and proceeds to
tower switchover after 4 hours of drying.
iii. This alarm is self-clearing, at which time the
alarm LED stops blinking and control switches
back to Energy Management control.
13. Dew Point Sensor
a. High Dewpoint Alarm
i. The user enters an alarm value through the
Program Mode.
ii. If the measured dew point exceeds the
alarm value, the outlet dew point alarm is
indicated.
b. Under-range alarm - Dew point below -148°F
(-100°C)
c. Over-range alarm - Dew point greater than
+109°F (+43°C)
d. On alarm condition,
i. Local alarm is displayed and the common
alarm relay is de-energized.
ii. If dryer is set up for Dewpoint Control, the dryer
sequence continues, but bypasses the “HOLD”
step and proceeds to tower switchover after 4
hours of drying.
iii. This alarm is self-clearing, at which time the
alarm LED stops blinking and control switches
back to Dewpoint Control.