13
revised 10/09
Smog-Hog
PSH Series Model
4.1.8 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 collector cells 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 the 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 17 and 18.
During normal operation, with unicells in place, the
component door (10) and the power pack door closed
(3), the push rod (5) is in contact with the collector cells
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 13. upon opening the component
door (10), the push rod (5) is released from the collector
cells 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 14. 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 collector
cells are grounded through the acorn nut (8), but with
the contact spring (12) fully compressed. refer to
figure 15.
4.1.9 IN-PLACE CLEANING.
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 PSH. the y strainer
to the detergent injector tee assembly should also be
checked for debris. a wash cycle should be initiated
before placing the PSH on line, refer to the in-Place
cleaning owner’s Manual for the start up operational
procedure.
CAUTION
Figure 13
Component door and Power Pack door Closed
Figure 14
Component door Open and
Power Pack door Closed
Figure 15
Component door Closed and
Power Pack door Open
