LTR-512 Master Clock Time Setting And Wall Clock Synchronization Instructions

Lathem Master Controls are ideal for schools, hospitals, airports and industry. The system can be programmed with eight password-protected bell schedules, each capable of executing 64 multi-function events. Click here to read an important article on the US Power Grid Experiment as it could cause problems with clock synchronizations.

To change the time on an LTR4-512 Series Master:

1. Press [#] [0] [#]
2. Enter the 6-digit password, then press [#]. The default user password is 000000.
3. Press [#]  [1]  [#]
4. Enter the date and press [#]. If today's date is September 1, 2011, enter:
   
   [0] [9] [0] [1] [2] [0] [1] [1] [#]
5. Press the number [1] - [7] for the day of the week, Sunday through Saturday:

1. Press [#] to confirm or [*] to try again.
2. Enter the time one minute ahead, using either 12-hour or 24 hour format, then press [#]. (If using 24-hour format, enter midnight as 00:00.) For example, if the current time is 08:59, enter: 09:00.
3. Press [0] for PM or [1] for AM if the time entered is less than 1:00PM.
4. Press the [#] key when the minute changes. When this process is complete, the master clock display should show the time and date entered.

1. For SS Synchronous Secondary Clocks, press [#] [9] [#].
2. Press [1] to enable correction on Circuit 1. For LTR8-512/LTR8-512M, press [2] to enable correction on Circuit 2, if necessary.
3. Press [#].
4. When prompted to ENTER CURRENT CLOCK READING, enter the time shown on the Wall Clock minus 5 minutes. Press [#] to accept the time entered.
5. Press [#] to execute the synchronization process for the Wall Clocks.

The Synchronous Wall Clocks should begin to correct within 2 minutes. Correction will complete at top of next hour following the correction. If the manual correction procedure is not performed, the wall clocks will automatically correct at the next Scheduled Correction, which is either 6:00AM or 6:00PM.