Eco Power Equipment IAQH Series, Инструкция по установке и эксплуатации

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IAQH-1000 Manual
6 Actuator position fault
The required position feedback from the connected
SQM… actuator was not received.
1. Ensure the potentiometer on the SQM… actuator is
wired correctly.
-For counter-clockwise actuators (SQM40…, SQM50…),
terminal "c" on the potentiometer should be wired to
terminal X66.1 on the LME7, and terminal "a" on the
potentiometer should be wired to terminal X66.3 on the
LME7.
-For clockwise actuators (SQM41..., SQM50...R),
terminal "a" on the potentiometer should be wired to
terminal X66.1 on the LME7, and terminal "c" on the
potentiometer should be wired to terminal X66.3 on the
LME7.
2. Ensure the SQM... actuator is wired properly to the
LME7, especially the position feedback on terminal
X2-09.4 of the LME7.
3. Ensure no mechanical stops are preventing the
actuator from reaching its expected position.
4. While not common, heavy vibration on the actuator
can wear a track in the position feedback potentiometer.
If the fault always occurs at the same actuator position,
the actuator may need to be replaced, and the vibration
needs to be reduced to avoid having a similar issue with
the new actuator.
7 Loss of flame
A flame failure occurred during normal operation.
1. Check the fuel / air ratio.
2. Check the flame detector signal in the presence of a
known flame source. Replace the flame detector if it
does not produce the anticipated signal.
10 Wiring or other error
This fault is a catchall and can be caused by a variety of
issues. See Section 7-3 for a list of all known causes of
this fault. If none of the causes listed in Section 7-3
appears to be the cause, review all wiring on the LME7
and check to see if a wire is landed on an incorrect
terminal.
12
Fuel valve V2 leaking
(PME73.840A1) Fuel valve
V1 leaking (all other PME7s)
On PME73.840A1, the downstream gas valve V2 failed
valve proving. On all other PME7 program modules, the
upstream gas valve V1 failed valve proving.
1. Bubble test the gas valve to ensure the valve is not
leaking. If the valve is leaking, replace the valve.
2. Ensure that the setpoint of the valve proving pressure
switch is set to 50% of the inlet pressure to the upstream
gas valve.
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