Page 14 / Bulletin 75-00 J
Symptom
Possible Cause
Solution
Strong Ammonia
smell coming
from bubbler
(#14).
Water make up closed or restricted.
Leaking vent solenoid (#6).
Make sure the fresh water supply to the bubbler is not turned
off or being restricted. The purger is supplied with a shutoff ball
valve that should be in the full open position to start, and then
throttled back to control the fl ow rate into the bubbler.
Check the operation of the water makeup solenoid (#5). Verify
that the coil is energized when the vent cycle is active. The
magnetic fi eld can be verifi ed with a small screwdriver touching
the top of the solenoid tube. It should be drawn to the tube if the
coil is powered and functioning properly. If the coil functions and
water still does not fl ow to the bubbler, check the supply lines for
obstructions.
Replace the water solenoid (#5) if necessary.
If bubbles are seen in the bubbler well after a vent has occurred,
the vent solenoid may be leaking.
Replace the solenoid if necessary.
Slave unit (#2)
not functioning (5
purge points and
up).
Master, slave communication cable
missing or damaged.
No power supplied to slave board.
Verify that the communications cable connecting the main purger
controller to the slave board is present, attached to the proper
terminals and is not damaged.
Check to make sure the green LED at the top of the slave unit
(#2) circuit board is fl ashing.
Verify the proper communication setting. This is done by pressing
the up & down arrow keys on the main controller (#1) at the same
time. Several attempts may be required as timing is critical. After
successfully completing this step, you should see a menu screen
that displays; Baud Rate, Parity, Temperature Scale and Slave ID.
(See step #7 under installation instructions)
Make sure the “baud” rate is set for 19200, “parity” even and
“slave ID” 01. Use the same keypad strokes to move and enter
settings as described in the bulletin under “Setup Instructions”.
Press the menu key to get back to the main screen. Check the
operation of the slave unit.
Make sure the power cable from the main purger controller to the
slave board is present, not damaged and properly connected.
Replace slave unit if necessary. (See both 4 point purger and
slave unit wiring diagram for proper wiring terminals)
Controller in
“sleep mode”, will
not purger
No foul gas present in system.
Damaged main controller board.
The purger controller will automatically go into “Sleep Mode” if
it has sampled every programmed purge point twice without a
vent occurring. It will stay in sleep mode for 2 hours then resume
its programmed cycle. You can override the sleep mode cycle
by simply pressing the “Enter” key on the controller. The sleep
mode feature will not be disabled and will repeat again if no vent
occurs.
Replace controller if necessary.
Note:
all items with a (#) can be located in the V200 auto purger parts diagram.
V200 Service Pointers Continued