Yamatake-Honeywell 7800 Series, Данные о продукции

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7800 SERIES EC7885A/RM7885A RELAY MODULE
65-0203
21
Table 4. Static checkout.
Test
No. Test Jumpers Voltmeter Normal Operation If Abnormal Check
1 — L2-3 Line Voltage 1. Master Switch
2. Power connected to the master switch.
2 3-4 — Alarm sounds 1. Alarm.
2. Alarm Silencing Switch.
3 —
May need to jumper
limits if used.
L2-6 Line Voltage 1. Limit.
2. Stop station.
3. Alarm Silencing Switch.
4 3-8 — Pilot Valve opens Listen for click or feel head of Valve Activation.
1. Actuator if used.
2. Pilot Valve.
5 3-9 — Main Fuel Valve opens Listen for click or feel head of Valve Activation.
1. Actuator if used.
2. Main Fuel Valve.
6 3-10 — Push Start Switch and
listen for Ignition Noise. 1. Start Switch.
2. Ignition transformer.
Final All
CAUTION
After completing these tests, open the master switch and remove all test jumpers
from the subbase terminals. Also remove bypass jumpers from limits if used.
CHECKOUT
WARNING
Do not allow fuel to accumulate in the combustion
chamber. If fuel is allowed to enter the chamber for
longer than a few seconds without igniting, an
explosive mixture could result. It is recommended that
you limit the trial for pilot to ten seconds, and limit the
attempt to light the main burner to two seconds from
the time the fuel has reached the burner nozzle. In
any case, do not exceed the nominal lightoff time
specified by the equipment manufacturer. Close the
manual fuel shutoff valve(s) if the flame is not burning
at the end of the specified time.
CAUTION
1. Use extreme care while testing the system. Line
voltage is present on most terminal connections
when power is on.
2. Open the master switch before removing or
installing the 7885A.
3. Make sure all manual fuel shutoff valve(s) are
closed before starting the initial lightoff check and
the Pilot Turndown Tests.
4. Do not put the system in service until you have
satisfactorily completed all applicable tests in this
section and any others required by the equipment
manufacturer.
CAUTION
If an 7885A is replaced with a lower or higher
functioning 7800 SERIES Relay Module, the burner
will not sequence unless wiring changes are made.
IMPORTANT
1. If the system fails to perform properly, refer to 7800
SERIES System Annunciation Diagnostics and
Troubleshooting, form 65-0118.
2. Repeat ALL required Checkout Tests after all
adjustments are made. ALL tests must be satisfied
with the flame detector(s) in its FINAL position.
Equipment Recommended
Volt-ohmmeter (1M ohm/volt minimum sensitivity):
•
0-300 Vac capability.
• 0-6000 ohm capability.
• 0-10 Vdc capability.
Checkout Summary
NOTE: An alarm will sound until a flame is present.
• Preliminary inspection—all installations.
• Flame signal measurement—all installations.
• Initial lightoff check for proved pilot—all installations using
a pilot.
• Initial lightoff check for direct spark ignition of oil—all
burners using DSI.
• Pilot turndown test—all installations using a pilot.
• Hot refractory saturation test—all installations using
Infrared (lead sulfide) Flame Detectors.
• Hot refractory hold-in test—all installations.
• Ignition interference test—all installations using flame
rods.
• Ignition spark pickup—all installations using Ultraviolet
Flame Detectors.
• Response to other ultraviolet sources—all installations
using Ultraviolet Flame Detectors.
• Flame signal with hot combustion chamber—all
installations.
• Safety shutdown tests—all installations.