Time Mark 442 Data Sheet
MODEL 442
TIME MARK is a division of
Multi-Stage
Alternator
Replaces Mechanical Alternators
User Selectable for:
• Single Motor/Pump
• Two Motor/Pump (duplex)
• Three Motor/Pump (triplex)
• Four Motor/Pump (quadraplex)
Unit Remembers Which Motor/Pump
Is Next During Power Loss
Sequence-On, Simultaneous-Off Operation
DESCRIPTION
The Model 442 Multi-Stage Alternator is designed to
control the operating sequence of multi-stage motor/
pumping systems. It can also be used to maintain the
desired level of pressure-on air compressor systems. Four
motor select DIP switches located on the front panel allow
the alternator to control a single-motor/pump, two-motor/
pump, three-motor/pump or four-motor/pump system.
The Model 442 will assure that only the necessary motors/
pumps are operating, and that the run time for each motor/
pump is approximately equal. Motors are sequenced
“Sequence-On, Simultaneous-Off ”. If the motor/pumping
demand requires only one motor/pump at a time, the
alternator will start the next motor/pump in sequence each
time an input switch is closed. Input switches may be float
switches, pressure switches, flow switches, etc., as
required by the application.
Potential uses for the Model 442 include water supply
systems, sewage disposal plant systems, storage tank
filling systems, air compressor systems, irrigation and
water recycling systems.
DIMENSIONS
SPECIFICATIONS
MODEL 442-120 442-240
Input Voltage 120VAC +/- 10%
Power Consumption 6.0 watts max.
Transient Protection 2500 VRMS for 10ms
Delay Between Relay
Operations
Output Contact Rating SPST 5A at 240VAC or 5A at 30VDC
Input Contact Requirement
Expected Relay Life Mech: 50 million operations
Operating Temperature - 20º to +140º F
Humidity Tolerance 0 - 97% w/o condensation
Enclosure Material ABS plastic
Weight 1.0 lbs.
50/60Hz
0.001 amp at 12VDC
Elec: 100,000 ops at rated load
Motor/Pump Select Switch
OFF
(open)
ON
(closed)
The Model 442 is not a personal safety device. Remove
Motor/pump disabled
(unit will not try to use that motor)
Motor/pump enabled
(unit will operate relay for motor as needed)
power from Motors/Pumps before servicing
240VAC +/- 10%
50/60Hz
5 seconds
resistive
Page 1 of 3 11/2011
© 2011 TIME MARK CORPORATION
S
S 1 2 3 4 COM
1
1
MOTOR
SELECT
2 3 4
1
MOTORS RUNNING
2
---- INPUT CONTACTS ----
23344
SUPPLY
VOLTAGE
1 2 3 4
OUTPUT CONTACTS
RELAY OUTPUT
WARNING !!
DO NOT APPLY
POWER TO INPUTS
SUPPLY
VOLTAGE
FLOAT SWITCHES
SENSORS OR
SIMILAR INPUTS
TO MOTOR CONTROLS
MODEL 442
TIME MARK is a division of
Multi-Stage Alternator
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 442.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
INSTALLATION
Switch Inputs
Input 1
Input 2
COM
S
** DO NOT APPLY VOLTAGE TO SWITCH INPUTS **
Switch Fault Detection (BLINKING LIGHT):
STOP
1 - 4
Mount the Model 442 in an appropriate enclosure or panel.
Do not apply power until all other connections are made.
Connect the input switches (float, pressure, etc.) to the
terminals marked INPUT CONTACTS.
One side of each input switch is connected to the common
terminal; the other side should be connected to the input
terminals, starting with terminal 1.
Terminal 1 will be the first selected for either the pump up or
the pump down application. See the TYPICAL APPLICATION
diagram.
Connect the control circuits of the pumps or motors to be
alternated to the terminals marked OUTPUT CONTACTS.
Connect AC power connections to the terminals marked Supply Voltage.
ADJUSTMENT
Set the motor select DIP switches to the ON position, for every Motor/Pump connected to the Model 442 you wish to enable.
If a pump or motor must be removed from service, set the DIP
switch to OFF for that motor/pump.
PUMP DOWN APPLICATION
In a “Pump Down” application, the switches are normally-
GENERAL SAFETY
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
open. As the liquid level rises, the number 1 level switch
closes, turning on the first pump. If the level continues to rise,
additional pumps are turned on.
First level input
Second level input
Input 3
Input 4
Third level input
Fourth level input
Supply voltage output to switches 12VDC
Stop switch input
Switch stuck OFF only
Switch stuck ON or OFF
If fault clears, LED will stop blinking
As the level drops, the pumps or motors stay on until the
STOP switch opens. When the STOP switch opens, the
Model 442 alternates to the next pump for the next operating
cycle.
PUMP UP APPLICATION
In a “Pump Up” application, the switches are normally-closed.
When the reservoir is full, the switches will be open. As the
liquid level drops the number 1 level switch closes, turning on
the first pump. If the level continues to drop, additional pumps
are turned on.
When the level rises above the STOP switch, the switch
opens, turning off all pumps. The Model 442 then alternates to
start the next pump in line for the next operating cycle.
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.
TYPICAL APPLICATION
© 2011 TIME MARK CORPORATION
Page 2 of 3 11/2011
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