7
3.5.13 Building Maintenance System (BMS)
An alternative to the remote status panel is the BMS (signal relay
modules) which also includes additional features other than only
monitoring the power pack enclosure(s); refer to unit Electrical Draw-
ings or Sequence of Operation documentation to determine if the
BMS is part of the PSG system. Some of the additional features
(from the PSG system to BMS), a common signal indicating high
voltages are not within specifications to the power pack enclosures,
indicating the operational status of the PSG system, indicating the
operational status of the In Place Cleaning System, (from BMS to
PSG system), placing PSG system on or off line, and fire system
contact disabling the PSG power pack circuit and make up blower.
Signal relays for the BMS are usually located in the unit Main Electri-
cal Panel or the power pack enclosures, refer to unit Electrical Draw-
ings. The Building Maintenance System (BMS) is supplied by others.
THE FOLLOWING SECTIONS ARE FOR THE
USE OF TRAINED SERVICE PERSONNEL ONLY.
The PSG unit should be inspected frequently and col-
lected contaminant removed from the system regularly
to prevent excessive accumulation which may result in a
flashover or risk of fire.
Hazardous live and moving parts are exposed during the
troubleshooting procedures.
Power pack enclosure(s) service voltage is 120VAC. This
can be lethal. Voltage (120 VAC) is present within the
power pack enclosure even though the toggle switch is
placed in the off position.
Risk of electrical shock. The high voltage circuits to
the ionizer and collector should be grounded before
removing the power pack, high voltage wires, door
feed-through insulators and unicell(s). The grounding
procedure can be accomplished by waiting one minute
after placing the toggle switch in off position to the
power pack enclosure or refer to Figures 12 and 13. The
power pack total current output is limited to a maximum
of 5 milliamps to assure personnel safety.
!
WARNING
!
WARNING
3.5.11 Electrical Field Installation
ELECTRICAL SHOCK HAZARD
When electrical control panels are supplied by others
an electrical interlock should be provided for the pow-
er pack circuit to the Smog-Hog PSG and the system
exhaust blower. This provides safe operation of the
PSG. Do not operate the power pack circuit with the
system exhaust blower off line.
All electrical work should be performed by a qualified electrician
in accordance with local electrical codes. Disconnect electrical
power before installing or servicing electrical components. The
PSG is manufactured per job specifications and Parker speci-
fications, refer to unit Electrical Drawings. Dashed lines on unit
Electrical Drawings identify field wiring requirements and possible
certain recommended equipment not supplied by Parker. When
additional equipment is specified for field installation, refer to unit
System Layout Drawing and unit Electrical Drawings. If the PSG
is skid mounted, interconnection wiring may have been com-
pleted at the factory. Do not mount auxiliary electrical equipment
on or inside Parker equipment unless specifically authorized by
Parker. Such unauthorized action may void the system warranty.
Parker provides solid-state programmable logic controllers (PLC)
on various systems. The PLC operates on a low (24 VDC/120
VAC voltage and is susceptible to faults induced by the close
proximity to higher voltage wires. Accordingly, the following
should be observed during electrical installation:
1. Three-phase leads should not be located within 4 inches of the
solid-state controller.
2. Care should be exercised when drilling conduit entry holes to
protect PLC and other electrical components from metal chips
and dust. Failure to comply with these instructions can result in
a fault condition requiring repair or replacement by authorized
service personnel. Costs of such repair or replacement are the
responsibility of the user/installing contractor.
3.5.12 Remote Status
This panel serves as a monitoring device indicating the opera-
tional status to each power pack enclosure for the end user; refer
to unit Electrical Drawings or Sequence of Operation documen-
tation to determine if the remote status panel is part of the PSG
system. The remote status panel or unit Main Electrical Panel
(if amber lights are integrated to main panel) should be located
remotely from the PSG system preferably in an area which is ac-
cessible and not installed by the PSG system. The panel located
by the PSG system serves no purpose since there is an indica-
tor light to each power pack enclosure. The remote status could
also consist of a beacon light assembly located in an accessible
area for monitoring. The illumination of the beacon light indicates
a failed condition to one of the power pack enclosures. Flasher
modules for each power pack enclosure is either located in a
separate panel, the unit Main Electrical Panel, or in each power
pack enclosure.
!
DANGER
!
CAUTION
!
CAUTION
!
WARNING
