Preparation; Initial Observations - GE Hydran 201 i Instruction Manual

8.2.1

Preparation

To verify its operation, the Hydran 201Ci-1 must first be connected to a functional
Hydran 201Ti via a supervisory link cable. One end of this cable is already connected to
the H201Ti. For details on commissioning the H201Ti, see Chapter 6. Proceed as follows:
1. Connect a three-wire power cord to the ac Power 3-Terminal Block on the H201Ti
(item 8 in Figure 2-4 on page 2-8): The live side to L1/L, the other side to L2/N, and
the ground to E/G. For additional wiring details, see Table D-1 on page D-1.
2. Connect the second end of the three-pair supervisory link cable coming out of the
H201Ti to the main terminal block on the H201Ci-1 (item 6 in Figure 3-6 on
page 3-11).
3. Power On the H201Ti.
4. Ensure the H201Ti is operating normally and no gas or fail alarms are present, by
looking at the small LED indicators on the right side of the I/O module (refer to
Section 2.4.6.3 on page 2-11).
5. Connect a power cord to the terminals 1 and 2 on the main terminal block of the
H201Ci-1 (item 6 in Figure 3-6 on page 3-11), and connect the E/G wire to the
enclosure chassis.
6. Power On the H201Ci-1.
8.2.2

Initial Observations

1. Verify the Hydran 201Ci-1's display is not blank. If it remains blank, the possible
causes are as follows:
• If the fail alarm is triggered, read the alarm message on the Hydran 201Ti's display to
identify the cause of the alarm. Then see Chapter 12.
• Verify the connections at both ends of the supervisory link cable.
• Verify the fuse(s) and the ac power supply of the H201Ci-1 and H201Ti.
• Verify the operation of the H201Ci-1's display.
2. Verify the H201Ci-1's display shows the same ppm value as the H201Ti's scrolling
gas level display. A discrepancy of ± 2 ppm is acceptable.
Part 17997
Verification of Operation Prior to Installation
Rev. 6, March 2011 8-3