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PLLD Grounding Clamp Manual No: 577014-012 • Revision: A
Installation Guide
Introduction
This guide contains instructions to install a grounding clamp onto an installed PLLD Transducer.
Related Documents
576013-902 PLLD Installation Guide
576013-879 TLS-3XX Site Prep
577013-879 TLS-450 Site Prep
Safety Precautions
The following safety symbols may be used throughout this manual to alert you to important safety hazards and
precautions.
EXPLOSIVE
Fuels and their vapors are extremely explosive if
ignited.
ELECTRICITY
High voltage exists in, and is supplied to, the
device. A potential shock hazard exists.
WARNI N G
Heed the adjacent instructions to avoid damage
to equipment, property, environment or personal
injury.
READ ALL RELATED MANUALS
Knowledge of all related procedures before you
begin work is important. Read and understand all
manuals thoroughly. If you do not understand a
procedure, ask someone who does.
WARNING
This product is to be installed and operated in the highly combustible environment
of a gasoline tank where flammable liquids and explosive vapors may be present.
FAILURE TO COMPLY WITH THE FOLLOWING WARNINGS AND SAFETY
PRECAUTIONS COULD CAUSE DAMAGE TO PROPERTY, ENVIRONMENT,
RESULTING IN SERIOUS INJURY OR DEATH.
Observe the following precautions:
1. Read and follow all instructions in this manual, including all safety warnings.
2. To be installed in accordance with the National Electrical Code (NFPA 70) and
the Code for Motor Fuel Dispensing Facilities and Repair Garages (NFPA 30A).
3. Before installing this device, turn Off, tag/lock out power to the system,
including console and submersible pumps.
4. To protect yourself and others from being struck by vehicles, block off your
work area during installation or service.
FLAMMABLE
Fuels and their vapors are extremely flammable.
TURN POWER OFF
Live power to a device creates a potential shock
hazard. Turn Off power to the device and associated
accessories when servicing the unit.
USE SAFETY BARRICADES
Unauthorized people or vehicles in the work area are
dangerous. Always use safety cones or barricades,
safety tape, and your vehicle to block the work area.
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PLLD Grounding Clamp Installation Guide P/N 577014-012
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Kit Contents
Veeder-Root parts required to install the PLLD Transducer grounding clamp are listed in Table 1.
Table 1. PLLD Grounding Kit (Part Number 330020-285)
Item Qty. Description P/N
1 1 Clamp grounding 331285-002
2 1 Ring terminal - 1/4”, 12-10 AWG 576048-061
3 1 1/4”-20 x 1.00 “ bolt 514100-407
4 1 1/4”-20 nut hx sst w/lock washer 511000-251
5 1 PLLD Grounding Clamp Installation Guide 577014-012
Installation Steps
FAILURE TO FOLLOW THE STEPS BELOW MAY IMPAIR INTRINSIC SAFETY, CAUSE
DAMAGE TO PROPERTY, ENVIRONMENT, RESULTING IN SERIOUS INJURY OR DEATH
1. Before installing this device, turn Off, tag/lock out power to the system, including console and
submersible pumps.
2
2. A separate 4mm
(minimum) wire must be run from the site earth ground to the STP sump in a nonintrinsically safe conduit or duct (see Figure 1). DO NOT CONNECT THE CLAMP OR BODY OF
THE PLLD PRESSURE SENSOR TO ANY INTRINSCALLY SAFE WIRE THAT CONNECTS TO
THE TLS CONSOLE.
3. Using the ring terminal supplied in the kit, insert the stripped ground wire into the barrel of the ring
terminal.
4. Use a properly sized crimping tool to ensure a good tight bond (see Figure 2).
5. Place the clamp around the sensor and attach the ring terminal to the clamp with the clamp bolt.
6. Securely tighten the clamp bolt until the clamp tightly grips the sensor body and no longer can be
rotated by hand.
7. Confirm continuity between the PLLD sensor body and ground at the electrical panel and between
the electrical panel to the TLS console chassis (reference Figure 3).
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PLLD Grounding Clamp Installation Guide P/N 577014-012
16mm earth to DB
2
STP in tank sump
4mm (minimum)
earth to each
PLLD sensor
2
Earth
spike
Recommended Earth Layout for PLLD sites
1. Site has 16mm earth (typical) to each tank sump.
2. All sump earths are connected to common point.
3. From the common point, earth is connected to an
Earth spike.
4. From the common point, earth is also connected
to the building earth in the distribution panel.
Building electrical
distribution panel
2
012-3.eps
Securely crimp stripped barrier wire
in ring terminal. Slip ring terminal
onto bolt and screw bolt into clamp
nut. Tighten bolt until the clamp
cannot be rotated by hand.
Figure 1.
Figure 2.
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PLLD Grounding Clamp Installation Guide P/N 577014-012
NOTES:
1. All sensor wiring and intrinsically safe
connections installed in accordance with
576013-902 and appropriate site prep
manual (see related comments on page 1).
2. Intrinsically safe wiring shall be installed
in accordance with article 504-20 of the
NEC ANSI/NFPA 70 or local jurisdiction
having authority.
3. Do not connect wire that is attached to
the PLLD clamp to any intrins
ically safe
wiring.
012-1.eps
PLLD
sensor
Earth ground
bus
PLLD sensor
cable
PRESSURE XMIT
MAXIMUM SENSOR
OUTPUT RATINGS:
15 VDC
.15 AMP
+ + + + + +
1 2 3 4 5 6
PRESSURE LINE LEAK INTERFACE MODULE
Conduit or ducting
Attach cable shield
to ground lug closest
to conduit/duct entry
+
Intrinsically Safe Bay of Console
AC Mains Breaker Panel
Shield
Ground wire with 4 mm crosssectional area minimum. Connects
to the site’s earth ground.
2
PLLD sensor
grounding clamp
Tighten bolt until
clamp cannot be
rotated by hand
Non-Intrinsically
safe conduit
or ducting
Site Earth ground
Earth
ground
to TLS
Console
Intrinsically
safe conduit
or ducting
TLS ground wiring cross section
must be 4 mm2 or larger. Connect
the barrier ground to the earth ground
bus at the power distribution panel.
Check continuity between
electrical panel earthing bus
and PLLD sensor body.
Check continuity between
TLS console ground and
electrical panel earthing bus.
Figure 3.
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