8
revised 09/09
Smog-Hog
SG Series Model
5.7 POWER PACK ENCLOSURE PUSH ROD
AND GROUNDING BAR
each power pack enclosure has a captive, spring
loaded “push rod” extending into the module.
factory-set, the push rod serves the following purposes:
1. High voltage Dc power is automatically shut down
with the unicells removed from the module.
2. Whenever a module door or power pack enclosure
lid cover is opened, the limit switch is disengaged,
placing 115 Vac off line to the power pack.
3. opening either of the module door or the power
pack enclosure lid cover also releases a spring
loaded push-rod, placing the grounding bar in
contact with the cell door feed through insulator
acorn nut, removing residual cell voltage.
The opening of only the module door is such that
the grounding bar may not completely short out
the cell circuit as a precaution. Perform the
grounding procedure. Refer to Figures 14 and 15.
During normal operation, (refer to figures 11, 12 and
13) with unicells in place, the component door (10)
and the power pack door closed (3), the push rod (5)
is in contact with unicell endplate (6). Push rod
extension (1) is in contact with the ground bar (2) and
bends to contact the limit switch (4) refer to figure 11.
upon opening the component door (10), the push rod
(5) is released from the unicell endplate (6) and spring
(7) compression is relieved, breaking the contact of the
push rod extension (1) from the ground bar (2), placing
ac voltage off line to the power pack and causing the
grounding bar to contact the acorn nut (8), refer to
figure 12. When opening the power pack door (3),
the spring (7) remains compressed but the grounding
bar (2) is pulled from the push rod extension (1) as
the power pack door (3) is opened. ac voltage is
placed off line to the power pack by opening the limit
switch (4) which the unicells are grounded through
the acorn nut (8), but with the contact spring (12) fully
compressed, refer to figure 13.
5.8 IN-PLACE CLEANING (OPTIONAL)
the spray nozzles to the wash headers can become
clogged or otherwise obstructed due to debris within the
field piping. at initial start-up, water should be purged
before final pipe connection at the SG. the y strainer
to the detergent injector tee assembly should also be
checked for debris. a wash cycle should be initiated
before placing the SG on line, refer to the in Place
cleaning owner’s Manual for the start up operational
procedure.
!
NOTICE
Figure 11
Component Door and Power Pack Door Closed
Figure 12
Component Door Open and
Power Pack Door Closed
Figure 13
Component Door Closed and
Power Pack Door Open
