Disconnect the power at the disconnect switch or circuit
breaker before making any electrical connections, and ensure a
proper ground connection is made before connecting line
voltage. Failure to do so can result in property damage,
personal injury and/or death.
7.2.2 Initial Observations
1. If the battery was just reconnected, the H201Ti performs the first power-up
sequence (see Section 5.2.5.3). Enter the requested parameters (date, time, etc.)
using the H201Ti’s keypad.
2. Observe the display and ensure the H201Ti goes through the self-test sequence
shown in Table 5-2.
Note: The self-test sequence is executed only if the power was down for more than five
minutes. Otherwise, only the message System;Initialization appears.
Note: A sensor test is executed at the end of the self-test sequence only if the scheduled
last sensor test was not performed. In this case, the H201Ti displays the message Sensor
Good and waits 120 seconds before resuming normal display.
3. Verify that the H201Ti displays the Main Display mode (the parameters shown in
Table 5-1, at the rate of one every five seconds).
4. Verify the operation of the H201Ti by observing the six small LED diagnostic
indicators on the right side of the I/O module (from left to right in Figure 3-7):
• C Heating state LED: This yellow LED flashes once every five seconds in
proportion to the amount of power supplied to the heating plate.
- The LED must remain lit if the internal temperature is below the set point
(adjustable Temp SetPoint parameter in the Temperature;DynOil Sampl
submenu).
- The LED must flash if the internal temperature is close to the set point.
- The LED must remain off if the internal temperature exceeds the set point.
• -5 - Regulated -5 Vdc supply LED: This dim, green LED must be lit to confirm
the presence of the -5 Vdc power supply.
• +5 - Regulated +5 Vdc supply LED: This dim, green LED must be lit to confirm
the presence of the +5 Vdc power supply.
• OK - System state indicator LED: This green LED must be lit to confirm that
the H201Ti is operating properly and that the fail alarm relay is energized. It
turns off if a fail alarm condition is detected and if the fail alarm relay is de-
energized.
• HH - High-High alarm state LED: This red LED is lit when a High-High alarm
condition is detected and the High-High alarm relay is energized. This LED
must therefore be off.
• H - High alarm state LED: This red LED is lit when a High alarm condition is
detected and the High alarm relay is energized. This LED must therefore be off.
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