Page 4
688 Manual
CHAPTER 2 - OPERATIONS AND FEATURES
Overview
For the 810PS2
S
EE
L
EVE
L™
gauge, the
M
ULTI
R
ACK
™ system
consists of a 688M
M
ULTI
R
ACK
™
Driver Module and, a fiber optic
interconnect cable, and a 688S (single compartment) or 688D
(dual compartment) rack controller. The gauge module is installed
inside the
S
EE
L
EVE
L™ and connected to alarm 4. For the 808P2
SeeLeveL Special gauge, only a 688M
M
ULTI
R
ACK
™ Driver Module
is needed. In both cases, the fiber optic cable carries a pulsed light
signal from the module to the rack controller to tell it to permit
loading. The rack controller is wired to the appropriate sockets
for connection to the loading rack. When the gauge detects an
overfill situation, the pulse light signal is turned off by the module
and the rack controller goes to non-permit, which shuts down the
loading rack.
PERMIT
THERM B
OPTIC
THERM A
MODEL 688
OPTIC/THERMISTOR LOADING RACK CONTROLLER
MultiRack
TM
POWER
OPTIC
SIGNAL
810-X Bar
M
ULTI
R
ACK
Rack Plugs Wired
to M
ULTI
R
ACK
808-P2 S
EE
L
EVE
L S
PECIAL
or 810-PS2 S
EE
L
EVE
L P
RO
S
ERIES
II
SHUT
UNPLUGGED
OPEN CIRCUIT
DOWN
HORN
ALARM
EMPTY
RE-ARM
MANUAL
RE-ARM
BYPASS
VALVE ERROR
SHORT CIRCUIT
PTO
ON
OFF
ENGINE ON
MODEL 815UHP
ALARM CONTROLLER
WARNING: SEE OWNERS MANUAL FOR INFORMATION
REGARDING OPERATIONAL PROCEDURES!
SPILLSTOP ULTRA
TM
PTO
UNLOAD
S
PILL
S
TOP
Controller
To loading rack
Driver Module Operation
The 688M
M
ULTI
R
ACK
™ Driver Module contains only the optical
transmitter for the
M
ULTI
R
ACK
™ , since the S
PILL
S
TOP
™ module is
built into the 808P2. The module mounts inside the 808P2 display
enclosure and connects to the black ground wire and yellow alarm
wire from the 808P2. Alarm 4 is programmed to operate the
M
ULTI
R
ACK
™ , the same as for the 810 model.
Warning: The module must be wired correctly to ensure
overfill protection is maintained when operated in conjunction
with the 815-UHP S
PILL
S
TOP
system.
Summary of Contents for MULTIRACK 688-S
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