12.0”
11.5”
3.25”
7.1”
7.6”
6.7”
.187” dia
TIME MARK is a division of
MODEL 407
Liquid Level
Controller
Three pump operation
Three run-time meters
Selectable lead or automatic
alternation
Five sensing levels
Alarm outputs
Hand-off-auto controls
DESCRIPTION
The Model 407 Liquid Level Controller provides central
control of triplex pumping systems. The Model 407 includes
pump alternating, visual run-time meters, hand-off-auto (HOA)
controls and alarm outputs.
Five level-sense inputs interface with float switches, pressure
switches, or other level sensing devices which can provide a
contact closure.
A SPST, normally-closed internal power-fail contact opens when
AC power 120VAC is connected to the controller, and closes if
power is lost or removed. Connections for external remote
alarm contacts, which must remain closed for normal operation
(or jumpered if not required), are supplied for each pump.
If either circuit opens, the corresponding pump will be locked out
until the problem is corrected and the ‘Alarm reset’ switch is
pressed.
DIMENSIONS
SPECIFICATIONS
MODEL 407
Input voltage 105-130VAC
Input frequency 60Hz
Power consumption 10W max.
Contacts SPST relay
Contact rating 10A at 240VAC resistive
Float Switch Potential 12VDC at 1mA
Transient protection 2500 V for 10ms
Operating temperature - 20º to +140º F
Display
Humidity tolerance 0-97% without condensation
Expected relay life
Case material 20 gauge Steel
Termination Removable terminal strip
Weight 6.1 lbs
Mechanical: 10 million operations
Electrical: 100,000 operations at rated load
to 99,999.9 non-resettable
Page 1 of 4 11/2011
© 2011 TIME MARK CORPORATION
TIME MARK is a division of
These contacts are external
MODEL 407
Liquid Level Controller
READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.
KEEP THIS DATA SHEET FOR FUTURE REFERENCE.
POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 407.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
DO NOT EXCEED THE OUTPUT OR INPUT RATINGS, AS STATED IN THE SPECIFICATIONS.
PROTECT THE UNIT WITH PROPERLY RATED FUSES.
DO NOT INSTALL IN DAMP OR MOIST AREAS.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
GENERAL SAFETY
Installation Instructions
INSTALLATION
Mount the controller in a suitable enclosure. Unplug the
terminal connectors from the controller.
Referring to the terminal block decal on the controller
and the illustration on this page, make the following
connections.
1. Connect a chassis ground to the terminals m a rk ed
AC GND.
2. Connect 115VAC operating power to the
terminals marked 115VAC.
3. Connect the LOW float switch to the LOW
terminals. Polarity is not critical.
4. Repeat step 3 for LEAD, LAG, LAG-LAG, and
HIGH terminals.
5. The SIGNAL GROUND connection is a common
between the controller and a Liquid Level Sensor,
no connection is necessary if the sensor is not
used.
6. The PUMP 1, 2, & 3 REMOTE ALARM terminals
should be connected to normally closed (NC)
alarm contacts in the motors. If none exist it is st i l l
necessary to install a jumper connection between
Pump 1, PUMP 2, & PUMP 3 REMOTE ALARM
terminals.
7. The POWER FAIL, ALARM BELL, & ALARM
LIGHT are not required for proper operation, but
are provided for your convenience. If used,
connect an audible/visual alarm across the
terminals. The POWER FAIL contact is open
while power is applied and closes on loss of
power. Connect audible and visual a l a r m s
across the ALARM BELL and ALARM Light
terminals respectively. These contacts are
normally open and will close on a fault (high or
remote alarm) condition.
8. Connect the PUMP 1, PUMP 2, & PUMP 3
contacts to the appropriate motor control circuits.
These contacts start and stop the pump motors
during operation.
Set the HOA (Hand-off-Auto) switches and the LEAD
PUMP selector switch as required. Apply operating
power. Test alarm LEDs and bells by pressing the
ALARM TEST switch.
If motor contacts not
used, install a jumper
connection
OUTPUT CONTACTS
10 AMPS MAX
INPUT SWITCHES
12VDC
Page 2 of 4 11/2011
© 2011 TIME MARK CORPORATION
TIME MARK is a division of
MODEL 407
Liquid Level Controller
Model 407 Panel
Panel Layout
A. Pump running time meter to 99,999.9 hours, non-
resettable.
B. Indicator LEDs illuminate when pumps are running.
C. Indicator LEDs illuminate when pump is stopped
because the remote alarm circuit is open.
D. Hand-off-Auto switch to manually or automatically
control the pumps.
E. Lead pump selector switch alternates lead pump
selection or a fixed lead pump operation of pump
1, 2, or 3.
F. Momentary switch tests remote alarm bell, light,
and illuminates alarm light I.
G. Momentary switch silences alarm bell until problem
is corrected.
H. Momentary switch resets all alarm indicators to
return to normal operation.
I. Alarm light stays lit until alarm reset switch is
pressed.
J. Indicator LEDs show which level switches are
closed.
K. Indicator LED illuminates when primary power is
applied.
OPERATION
The Liquid Level controller can be used in either pumpdown applications (with sump pumps) or in pump-up
applications (to fill water tanks or reservoirs). The type
of application is determined by the type of level switch
used, normally-open or normally-closed.
In typical application, as shown on page 4, pumps are
used to remove water from wet well when the water
level activates the float switches. Activating the first
switch (LOW) prepares the controller for operation. No
pump is started. The second level switch (LEAD) starts
the first pump.
Which pump actually starts is determined by the LEAD
PUMP selector switch. The third and fourth switch
(LAG and LAG-LAG) starts the second and third
pumps. The final level switch (HIGH) illuminates the
alarm indicator and closes the alarm bell and alarm light
outputs.
As the level switches are opened (in reverse order) all
operating pumps remain on until the LOW switch is
opened. All pumps are then turned off and the internal
alternator is triggered. On the next operating cycle the
next pump depending which was on before (either 1, 2,
or 3) will become the lead pump.
If the HIGH level is triggered an alarm light and alarm
bell circuit are activated, plus an LED on the controller
illuminates to warn of the problem.
Should this occur, an ‘Alarm Silence’ switch on the
controller breaks the alarm bell contacts, but leaves the
LED alarm indicator on.
When the alarm condition is corrected, an alarm reset
switch returns the controller to its normal operating
mode.
TROUBLESHOOTING
Problem: Remote alarm LEDs will not extinguish
Causes: 1. Remote alarm inputs not jumpered closed
2. Motor circuit to close jumpers is open
Solutions: 1. Install jumpers
2. Close circuit
Problem: Remote alarm LEDs come on for no apparent
reason and inputs are jumpered closed.
Causes: Externally generated noise. Noise can be
generated from faulty circuit breakers, contacts
and motors. It can also be induced from the
source being too close to the controller with
little or no shielding.
Solutions: Replace faulty components; install noise
suppression devices; shield wiring.
Note: This device is not a field repairable unit. Should the unit not
operate properly during installation or testing, insure that all electrical,
ground, and physical connections are correct. Verify that the proper
voltage is applied and check all fuses. Check all motor control
circuits, and insure that, if the REMOTE ALARM contacts are not
used, they are jumpered. If everything is correct and the device still
fails to operate, contact the factory. Should the controller fail during
use, contact the factory for instructions on returning the device for
repair.
WARRANTY
This product is warranted to be free from defects in materials
and workmanship for one year. Should this device fail to
operate, we will repair it for one year from the date of
manufacture. For complete warranty details, see the Terms
and Conditions of Sales page in the front section of the Time
Mark catalog or contact Time Mark at 1-800-862-2875.
Page 3 of 4 11/2011
© 2011 TIME MARK CORPORATION
TIME MARK is a division of
MODEL 407
TYPICAL APPLICATION
Liquid Level Controller
Note:
1. Remote alarm contacts are normally
closed contacts located at the motor
controllers. Jumper closed if not used.
2. Power fail contacts close on power
failure.
3. Alarm Bell and Alarm Light contacts
close on alarm condition.
Page 4 of 4 11/2011
© 2011 TIME MARK CORPORATION
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