Lathem Time Clock LT Series User Manual

LT SERIES  
User’s Manual  
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2 - LT Series Operations Manual  
SPECIFICATIONS  
PHYSICAL  
Height:  
7 inches  
Width:  
5 1/4 inches  
Depth:  
11 inches  
Weight:  
12 3/4 pounds (standard models)  
14 pounds (numbering models)  
Impact Resistant Reinforced Lexan  
Cool Gray  
Case:  
Color:  
Power Cord Length:  
6 Feet  
COMPONENTS  
Print Wheels:  
Engraved Brass or Cast Zinc Alloy  
Textured, soft surface for single copies.  
Purple Silk  
Printing Platen Assembly:  
Ribbon:  
Fuse:  
3 Amp.  
Digital Display:  
Timing Motor:  
Ribbon Drive Motor:  
Transformer:  
LED  
1 RPM, K342 type  
21 RPM, Model 60-3  
12 VAC, 50/60 Hz 117 VAC  
(50/60 Hz 230 VAC Optional)  
110/120 VAC (220 VAC Optional)  
110/120 VAC (220 VAC Optional)  
Numbering Solenoid:  
Print Solenoid:  
FEATURES  
Print Impact Adjustment:  
Time Format:  
Variable, for multi-part forms  
12-hour AM/PM  
24-hour Continental Optional  
POWER REQUIREMENTS  
Voltage:  
Current:  
110/120 VAC (220 VAC Optional)  
9 Amp. Max. Intrm. 110/120 VAC  
4 1/2 Amp. Max. Intrm. 220 VAC  
60 Hz (50 Hz Optional)  
Frequency:  
POSSIBLE SHOCK HAZARD EXISTS WHEN CASE COVER IS REMOVED AND  
AC POWER IS CONNECTED. USE CAUTION WHEN SETTING TYPE SECTION.  
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3 - LT Series Operations Manual  
INTRODUCTION  
The Lathem LT Series time stamps are considered "standard" by thousands of businesses and  
institutions because of their low initial cost and years of proven, trouble-free operation. The LT  
Series offers a wide variety of registration combinations that may be used for timing, numbering,  
and dating functions. The LT Series consists of four models, and is designed to meet virtually  
all of your validating needs. Standard features include: automatic registration; motor-driven  
ribbon shift for smooth, quiet operation; easy ribbon changing; registration position adjustment;  
and registration impact pressure control. Available options include a digital display, a manual  
registration button; allowing automatic or manual action, as well as repeat and advance  
numbering. All units carry a full one-year factory warranty.  
Lathem LT Series: Time, Date, and Numbering Stamps  
Please read all directions carefully before operating or maintaining your LT Series unit. This  
operations manual is designed to provide basic operating instructions. Minor maintenance and  
adjustments may also be performed easily and effectively by referring to these instructions. For  
service beyond the scope of this manual, contact the dealer from whom you purchased the  
equipment, or Lathem Time Corporation. Should it be necessary to return the unit, retain the  
original packing materials for shipping.  
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4 - LT Series Operations Manual  
LT SERIES MODELS  
LTD  
Registers date, month, and year. Type wheels must be advanced manually.  
Year wheels carry ten (10) years.  
LTN  
Registers consecutive numbers. Basic unit includes six (6) numbering wheels  
which advance automatically. Up to five additional numerical, letter, or code  
wheels may be purchased. The additional wheels must be advanced manually.  
(Note: The manual registration button is standard on this module.)  
LTT(C)  
Registers time, date, month, and year. Type wheels advance automatically.  
Month and date wheels must be reset manually the first day of each month.  
Models with a "C" designation have the optional digital display.  
LTTN(C)  
Registers time, date, month, and year, as well as consecutive numbering. The  
unit includes six (6) numbering wheels which advance automatically. Month  
and date type wheels must be reset manually the first day of each month.  
Models with a "C" designation have the optional digital display. (Note: The  
manual registration button is standard on this module.)  
CONSECUTIVE/DUPLICATE COUNT  
Models LTN and LTTN can repeat the same number once, twice, three times or  
four times before automatically advancing. (For jumper/shunt selection, see  
page 9, "Consecutive / Duplicate Count.")  
OPTIONAL FEATURES  
REPEAT/ADVANCE SWITCH  
Overrides automatic numbering advance to allow repeating the same number if  
desired, or advances to a higher number. (See page 8 for operating instructions.)  
INSCRIPTION PLATES  
The die plates may be permanently fixed or removable. They can have up to 3  
lines of 20 characters per line, or carry facsimile signatures. (Note: Removable  
die plates must be removed before opening top frame and reinstalled after  
closing top frame.)  
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5 - LT Series Operations Manual  
24-HOUR FORMAT  
The digital display models (LTTC and LTTNC) can display 12-hour (standard),  
or 24-hour, also known as the Continental (0-23 hour), format, when specified at  
time of order. The time wheels can print 24-hour format for an added charge.  
FIXED PAPER GUIDE  
Provides a fixed edge on the side of the time stamp to help the user make more  
accurate registrations.  
ADJUSTABLE PAPER GUIDE  
Enables the user to position registrations more accurately on various paper sizes.  
Adjustments are made quickly and easily with the slide mechanism.  
MANUAL REGISTRATION BUTTON [Standard on LTN and LTTN(C)]  
Enables the user to position the document and manually activate the imprint.  
GETTING STARTED  
Getting started with the LT Series is easy. There are only a couple of  
fundamental decisions that must be made.  
1. Plug the unit into the wall outlet.  
2. Place the clock on top of the anti-skid rubber pad  
3. Set the type section.  
4. Set the digital clock (optional feature).  
INSTALLATION  
The LT Series time stamp installs easily on any tabletop or flat surface.  
Determine whether you have a 110/120 VAC or 220 VAC unit, then plug it into  
any appropriate AC wall outlet. (Note: Avoid outlets with On/Off switches.  
These outlets may be accidentally turned off, causing an interruption of the  
timing action.)  
REGISTRATION  
When forms are fully inserted into the stamp, an automatic  
trigger causes registration. If the optional manual  
registration button is installed, insert a form to the desired  
position by aligning the desired registration position with  
the print locators (Figure 1, Number 1) on the side of the  
case. When the form is aligned, press the manual  
registration button on the front of the unit (Figure 1,  
Number 2).  
Figure 1  
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6 - LT Series Operations Manual  
SETTING THE TYPE WHEELS  
As noted in the earlier sections LT SERIES MODELS and OPTIONAL  
FEATURES, the LT Series Models are available with a variety of date, time,  
and number wheels. You may set the applicable type wheels according to the  
following directions.  
1. Disconnect the power source.  
2. Remove the top cover by inserting the key in the back of the unit, turning the  
key clockwise, and pulling the cover up and forward.  
3. Remove the frame locking pin (Figure 2, Number 1). Lift the top frame  
(Figure 2, Number 2) to access time and date type wheels (Figure 2, Number  
3) and number type wheels, if applicable.  
4. Depress the time type setting lever (Figure 2, Number 4). Using a small  
screwdriver or similar tool, rotate each individual date and time type wheel  
down to the correct date and time. (Note: Month and date type wheels must  
be reset manually the first day of each month.)  
5. Depress the number type setting lever (Figure 2, Number 5) and rotate the  
number type wheels (Figure 2, Number 6)  
to the correct position.  
6. Close the top frame and insert the locking  
pin, positioning the pull ring down and  
inside the case. Reinstall the top cover,  
fitting the top securely into the grooves in  
the main frame case. Lock the top in place.  
7. Connect the power source.  
8. Make a registration to check for accurate  
date, time, and number readings.  
If  
necessary, reset the digital display. (See  
Page 7.)  
Figure 2  
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7 - LT Series Operations Manual  
SETTING THE DIGITAL DISPLAY  
Models with a "C" affixed to their designation (LTTC and LTTNC) denote units  
featuring a digital display. This display is factory-set for use in the 12-hour  
AM/PM format or the 24-hour (Continental) format. The digital display should  
always be synchronized with the time type wheels. To set the digital display  
and synchronize the display with the time type wheels, do the following:  
1. Connect the power source.  
2. Locate the three (3) push-buttons labeled  
SEC, HRS and MIN on the bottom of  
unit (Figure 3).  
Figure 3  
3. Return the unit to its upright position with the digital display facing towards  
you. Pull the unit forward slightly so the front hangs over the edge of the  
table, thereby giving you access to the buttons. (Remember: The minute  
button is on the right.)  
4. Make a registration to see what time is indicated by the time stamp. Use the  
HRS (center) and MIN (right) buttons to set the time to the hour and minute  
indicated on the registration.  
5. Place your finger on the minute button (right) but do not press it just yet.  
Listen for the type section to advance; you will hear an audible click. When  
you hear the click, immediately press the minute button to advance one  
minute. Seconds are now synchronized with the type section.  
6. Make another registration to check the imprint feature for accuracy.  
(Note: Interruptions in power lasting more than 3 to 5 seconds will cause the  
digital display to flash, indicating that it is necessary to reset the display.)  
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8 - LT Series Operations Manual  
ADJUSTING PRINT IMPACT  
Print impact may be set to any desired level,  
from very hard to very light. The impact  
adjuster is located on the bottom of the unit.  
Using a small flat head screwdriver, turn the  
adjuster to the right to increase or left to  
decrease the impact. (Figure 4)  
(Note: To extend the effective life-span of  
the unit, use the lightest adjustment possible,  
which still gives a legible imprint.)  
Figure 4  
REPEAT/ADVANCE OPERATION  
The Repeat/Advance switch (Figure 5), located on the back of the machine,  
allows you to control the numbering feature of the unit. The Repeat/Advance  
switch provides the option of numbering items consecutively, or with the same  
number. To utilize these options:  
To REPEAT an imprint with the same  
number, flip the switch to the UP position.  
To ADVANCE the numbering wheels, press  
and hold the switch and press the Manual  
Registration Button to advance one number  
at a time. Continue pressing until the  
desired number is reached.  
Return the switch to the CENTER position  
for normal operations.  
Figure 5  
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9 - LT Series Operations Manual  
CONSECUTIVE/DUPLICATE COUNT (Numbering Units)  
Units equipped with the numbering feature may be configured for Consecutive  
Count, advancing the number type wheel after each registration, Duplicate  
Count, advancing the number type wheel after every two registrations.,  
Triplicate Count, advancing the number type wheel after every three  
registrations, or Quad Count, advancing the number type wheel after every four  
registrations. All units are shipped with the Consecutive Count mode enabled.  
Units having circuit board version “E” and above also support Triplicate and  
Quad numbering options. (See figure 6b).  
To switch to Duplicate Count mode, disconnect the power. Locate and  
remove the Access Cover (Figure 4) using a Phillips-head screwdriver. The  
version of the Control Circuit installed is indicated on the product label, on the  
underside of the unit, as well as on the circuit board, itself. On version “D”  
circuit boards, the shunt is placed over 2 pins (Figure 6a). Remove the shunt  
and place it over just 1 pin. To return to the Consecutive mode, reverse the  
procedure. For units having circuit board version “E” and above, the DUP,  
TRIP, and QUAD numbering features are selected by positioning the shunt  
according to (Figure 6b).  
Figure 6a  
Figure 6b  
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10 - LT Series Operations Manual  
ADJUSTING THE REGISTRATION POSITION  
Depending on the type of document being stamped, it may be necessary to  
change the registration position. This can be accomplished by moving the  
trigger assembly. The trigger assembly has a range of motion of about two (2)  
inches forward or backward. The trigger assembly tells the unit how far the  
document must be inserted before activating the stamp. The print locators on  
either side of the top cover (Page 5, Figure 1, Number 1) can help you center the  
registration point.  
To adjust the registration position:  
1. Disconnect the power source.  
2. Remove top cover and frame locking pin as described on Page 6. Lift the  
top frame.  
3. Loosen the trigger adjustment screw  
(Figure 7, Number 1) and slide the trigger  
assembly (Figure 7, Number 2) to the  
desired position. (Note: Moving the  
trigger assembly towards you places the  
registration closer to the edge of the  
document. Moving the trigger assembly  
away from you places the registration  
farther from the edge of the document.)  
Figure 7  
4. With trigger assembly in the desired position, tighten the trigger adjustment  
screw.  
5. Close the top frame, install the frame locking pin, and replace the top cover.  
6. Connect the power source.  
7. Make a sample registration. If the registration is not in the desired location,  
readjust the trigger assembly by following the previous six steps. If the  
registration is in the desired location, reset the type wheels (see Setting the Type  
Wheels, Page 6) and the digital display (Setting the Digital Display, Page 7).  
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11 - LT Series Operations Manual  
CHANGING THE RIBBON  
LT Series time stamps use a silk ribbon for long-lasting, high-quality imprints.  
To avoid damaging the unit, use only a #20-S ribbon.  
To change the ribbon:  
1. Disconnect the power source.  
2. Remove the top cover. Remove the  
frame locking pin and lift the top  
frame (as described on Page 6, Figure  
2).  
3. Pull the front spool plunger knob  
(Figure 8, Number 1) away from unit.  
While holding the knob, slide the  
ribbon to the left and out.  
4. Release the spool plunger knob.  
5. Repeat steps 3 and 4 with rear spool  
plunger knob. Remove and discard  
the used ribbon.  
6. Pull the front plunger knob out and  
position the new ribbon as shown in  
Figure 8. Align the spool with the  
posts on the ribbon spindle shaft and  
the spool plunger (Figure 8, Numbers  
Figure 8  
2 and 1).  
7. Release the spool plunger knob.  
8. Repeat steps 6 and 7 with the rear spool plunger knob.  
9. Close the top frame and install the locking pin. Install the top cover.  
10. Connect the power source.  
11. Make a sample registration. Reset the type wheels (Setting the Type  
Wheels, Page 6) and the digital display (Setting the Digital Display, Page 7).  
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12 - LT Series Operations Manual  
CHANGING THE FUSE  
Each model of the LT Series comes equipped with a fuse. The fuse protects the  
unit from damage in case of a power surge or electrical overload. If too much  
power reaches the fuse, the fuse burns out, or is "blown," stopping operation of  
the unit and avoiding costly damage.  
To change the fuse:  
1. Disconnect the power source.  
2. Remove top cover and frame locking pin as described on Page 6. Lift top  
frame.  
3. Locate the Fuse Holder Cap (Figure 9, Number 1).  
4. Remove the fuse cap by turning counterclockwise. Remove the old fuse.  
5. Insert a 3 Amp replacement fuse (Type 3AG or equivalent). Press down on  
fuse holder cap and turn clockwise until it locks in place.  
6. Close the top frame, install the frame locking pin, and install the top cover.  
7. Connect the power source.  
8. Make a sample registration. Reset the type wheels (Setting the Type  
Wheels, Page 6) and digital display (Setting the Digital Display, Page 7).  
Figure 9  
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13 - LT Series Operations Manual  
CHANGING THE PLATEN  
1. Disconnect the power source.  
2. Remove the top cover. Remove the frame  
locking pin and lift the top frame. Remove  
the ribbon (see Changing the Ribbon, Page  
11).  
3. Lift the printing platen assembly up and out  
of the frame. (Fig. 10)  
4. Insert the alternate printing platen assembly,  
using the guide pin for alignment.  
5. Replace the ribbon. Close the top frame and  
install the frame locking pin. Install the top  
cover.  
6. Connect the power source.  
7. Make a sample registration. Reset the time  
type wheels and the digital display.  
Figure 10  
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14 - LT Series Operations Manual  
Limited One-Year Limited Warranty  
Lathem warrants the hardware products described in this guide against defects in material and workmanship for  
a period of one year from date of original purchase from Lathem or from an authorized Lathem reseller. The  
conditions of this warranty and the extent of the responsibility of Lathem Time Corporation (“Lathem”) under  
this warranty are listed below.  
1. This warranty will become void when service performed by anyone other than an approved Lathem  
warranty service dealer results in damage to the product.  
2. This warranty does not apply to any product which has been subject to abuse, neglect, or accident,  
or which has had the serial number altered or removed, or which has been connected, installed,  
adjusted, or repaired other than in accordance with instructions furnished by Lathem.  
3. This warranty does not cover dealer labor cost for removing and reinstalling the machine for repair,  
or any expendable parts that are readily replaced due to normal use.  
4. The sole responsibility of Lathem under this warranty shall be limited to repair of this product, or  
replacement thereof, at the sole discretion of Lathem.  
5. If it becomes necessary to send the product or any defective part to Lathem or any authorized  
service dealer, the product must be shipped in its original carton or equivalent, fully insured with  
shipping charges prepaid. Lathem will not assume any responsibility for any loss or damage  
incurred in shipping.  
6. WARRANTY DISCLAIMER AND LIMITATION OF LIABILITY: Except only the limited  
express warranty set forth above, the products are sold with no expressed or implied warranties of  
any kind, and the implied warranties of merchantability and fitness for a particular purpose are  
hereby expressly disclaimed. No warranties are given with respect to products purchased other  
than from Lathem or an authorized Lathem reseller and any such products are purchased "as is, with  
all faults." In no event will Lathem be liable for any direct, indirect, special, incidental or  
consequential damages arising out of or in connection with the delivery, use or inability to use, or  
performance of this product. In the event any limited remedy given herein shall be deemed to have  
failed of its essential purpose, Lathem's maximum liability shall be to refund the purchase price  
upon return of the product.  
7. Proof of date of purchase from Lathem or an authorized Lathem reseller is required for warranty  
service on this product.  
8. This Warranty grants specific legal rights. Additional legal rights, which may vary by locale, may  
also apply.  
9. Should any difficulties arise with the performance of this product during warranty, or with any  
Lathem authorized service centers, contact Lathem Time at the address below.  
Lathem Time  
200 Selig Drive, SW, Atlanta, GA 30336  
404-691-0405  
Copyright © 2009 Lathem Time Corporation. All rights reserved.  
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OMLTA0509  
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