INSTALLATION
Turn both adjustment control potentiometers fully counter-
clockwise.
Connect the 3-phase wires to the terminals marked A, B
and C.
Connect the control wires to the terminals with the relay
contact markings. The contact markings on the unit are
the failed or tripped condition of the contacts. Apply
power.
If the contacts do not transfer when power is applied
(TRIPPED indicator on; NORMAL indicator off), press the
RESET button and check that all three phases are present
and of the correct voltage.
If all phases are correct, remove power from the unit,
reverse any two of the A, B or C terminal wires (phase
rotation is reversed), and re-apply power. The contacts
should then transfer.
ADJUSTMENT PROCEDURE
Rotate the TRIP DELAY adjustment pot counter-clock-
wise.
Rotate the FAILURE LEVEL adjustment pot clockwise until
the unit trips (NORMAL indicator off; TRIPPED indicator
on).
Slowly rotate the FAILURE LEVEL adjustment pot counter-
clockwise until the unit resets (TRIPPED indicator off;
NORMAL indicator on). On 2644R versions there will be
3.5 minutes delay before NORMAL comes back on.
Set the TRIP DELAY adjustment to the desired amount of
delay to prevent nuisance trips.
These adjustment settings will be correct for most
applications. Should nuisance trips occur, even with the
TRIP DELAY set, turn the FAILURE LEVEL adjustment pot
slightly farther counter-clockwise. Any adjustments should
be made in very small increments.
TROUBLESHOOTING
Should the Model 2644 3-Phase Monitor fail to operate
properly, check that three phases are present and are of
the correct voltage and phase rotation (a Time Mark Model
108A or 108B Phase Sequence Detector should be used to
verify phase rotation). Check all fuses, and verify that all
wiring connections are correct. Should problems persist,
contact your local Time Mark Distributor, or the factory for
further assistance.
WARRANTY
The Model 2644 3-Phase Monitor is covered by Time
Mark Corporation’s exclusive 5-Year Unconditional
Warranty. Should this device fail, for any reason, within
five years from the date of purchase, we will repair or
replace it free. Contact the Time Mark Sales department,
Monday through Friday; 8 a.m. to 5 p.m., CST, for further
details.
TYPICAL APPLICATION
MODEL 2644
3-Phase Monitor
READ ALL INSTRUCTIONS BEFORE INSTALLING, OPERATING OR SERVICING THIS DEVICE.
KEEP THIS DATA SHEET FOR FUTURE REFERENCE.
GENERAL SAFETY
POTENTIALLY HAZARDOUS VOLTAGES ARE PRESENT AT THE TERMINALS OF THE MODEL 2644.
ALL ELECTRICAL POWER SHOULD BE REMOVED WHEN CONNECTING OR DISCONNECTING WIRING.
THIS DEVICE SHOULD BE INSTALLED AND SERVICED BY QUALIFIED PERSONNEL.
Installation Instructions
TIME MARK is a division of
Telephone: Main - (918) 438-1220
Sales - (800) 862-2875
Fax: (918) 437-7584
E-mail: sales@time-mark.com
Internet: http://www.time-mark.com
Doc No. 87A146 12/00
© 2000 TIME MARK CORPORATION
11440 East Pine Street
Tulsa, Oklahoma 74116
Shows No Power Applied
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