Time Mark 403 Data Sheet
12.0"
11.5"
5.5"5.0"
.187" dia
4.62"
3.25"
TIME MAR K is a division of
MODEL 403
Liquid Level
Controller
Dual run-time meters
Selectable lead/lag or automatic
alternation
Four sensing levels
Alarm outputs
Hand-off-auto controls
DESCRIPTION
The Model 403 Liquid Level Controller provides central
control of duplex pumping systems. The Model 403
includes pump alternating, visual run-time meters, handoff-auto (HOA) controls and alarm outputs.
Four 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.
SPECIFICATIONS
MODEL 403
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
Mechanical: 10 million operations
Electrical: 100,000 operations at rated load
to 99,999.9 non-resettable
4.9 lbs
DIMENSIONS
Page 1 of 4 11/2011
© 2011 TIME MARK CORPORATION
TIME MAR K is a division of
MODEL 403
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 403.
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 marked 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 and HIGH terminals.
5. The SIGNAL GROUND connection is a common
between the controller, (Model 403), and a Liquid
Level Sensor, ( Model 404), no connection is
necessary if the sensor is not used.
6. The PUMP 1 & 2 REMOTE ALARM terminals should
be connected to normally closed (NC) alarm contacts
in the motors. If none exist it is still necessary to
install a jumper connection between Pump 1 REMOTE
ALARM terminals & PUMP 2 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 a u d i b l e /
visual alarm across the terminals. The POWER FAIL
contact is open while power is applied and closes
on loss of power. Connect audible and v i s u a l
alarms across the ALARM BELL and ALARM L i g h t
terminals respectively. These contacts are
normally open and will close on a fault (high or remote
alarm) condition.
8. Connect the PUMP 1 and the PUMP 2 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.
Page 2 of 4 11/2011
© 2011 TIME MARK CORPORATION
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