GE Hydran 201i, Instruction Manual

Page: 164 / 300

Chapter 8 • Hydran 201C
i
-1 Installation
8-4 Rev. 6, March 2011 Part 17997
3. Inside the H201C i -1, verify the Supervisory Link Supply indicator (green, DS12;
item 17 in Figure 3-7 on page 3-12) is lit.
4. Inside the H201C i -1, look at the Heater indicator (yellow, DS8; item 13 in Figure 3-7
on page 3-12):
• The LED must initially be lit if the ambient temperature is below approximately 25 °C
(77 °F).
• After a while, the LED must flash as the enclosure temperature reaches the above set
point.
• The LED must remain off if the ambient temperature exceeds the set point.
5. Since there are no alarm conditions present in the H201T i , verify the following points
on the H201C i -1:
• The Gas High alarm indicator of the door-mounted push-button 1 (item 2 in Figure 3-5
on page 3-9) is off.
• The Gas High-High alarm indicator of the door-mounted push-button 2 (item 2 in
Figure 3-5 on page 3-9) is off.
• The Alarm 1 (Gas High) indicator (yellow, DS10; item 15 in Figure 3-7 on page 3-12) is
off.
• The Alarm 2 (Gas High-High) indicator (yellow, DS9; item 14 in Figure 3-7 on
page 3-12) is off.
• The System OK indicator (yellow, DS11; item 16 in Figure 3-7 on page 3-12) is lit.
8.2.3 Verifying the Analog Output
The Hydran 201C i -1 is equipped with an isolated, analog 4–20 mA output. Table 4-7 on
page 4-25 lists the electrical currents that should be generated and the values that should be
displayed for each operation mode.
Proceed as follows:
1. Connect a dc digital ammeter with a 1 % accuracy and a 0.01 mA resolution to the
main terminal block on the H201C
i -1 (item 6 in Figure 3-6 on page 3-11).
2. Connect the positive lead on the pin 17 of the main terminal block.
3. Connect the negative lead on the pin 18 of the main terminal block.