TM
SMIDLEY
MINI-SCALE RETROFIT
INSTRUCTIONS
Smidley Mfg. Inc. Britt, Iowa 50423 | 800-392-5632 Toll Free | www.smidley.com
Rev. Aug 2015
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You have a timeless Smidley Scale that is still in great shape, but you’re ready to update your scale to use the new Digital Indicator technology. Please use these instructions to install the kit.
Thank you for your purchase.
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Suggested Tools:
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• 2”
x 4”
x 15”
(2) used for blocking
• 7/16”
combination wrench, box and open end
• 7/16”
socket 3/8”
drive
• 3/4”
socket 3/8”
drive
• 3/8”
drive ratchet, breaker bar or impact driver
• 5/16”
socket 1/4”
drive
• 1/4”
impact driver
• 1/4”
x 6”
straight blade screwdriver
• 4 1/2”
grinder with metal cutting wheel and grinding disc or reciprocating saw with metal cutting blade
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Retrofit Kit Contents:
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• (16) 1/4”
flat washers
• (8) 1/4”-20 hex nut with nylon insert
• (8) 1/4”-20 x 1 3/4”
hex cap screw
• (4) 1/2”
lock washer
• (4) 1/2”
flat washer
• (4) 1/2”-20 x 1”
hex cap screw
• (2) 4-40 x 1/2”
machine screw
• (2) 4-40 machine screw nut
• (8) 10-16 x 3/4”
hex washer head self-drilling screw
• (1) Digital Indicator Kit: load cells, digital indicator, wire harness with rodent proof sleeve,
junction box, battery charger, computer cable.
• (2) Lower load cell mount bracket
• (1) Digital indicator mount bracket
• (1) Upper load cell mount bracket
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SMIDLEY MINI-SCALE RETROFIT INSTRUCTIONS
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1.
Before completing the installation of the digital indicator retrofit kit, inspect the overall condition of the scale and complete any cleaning or repairs that are necessary.
2.
After inspecting the scale, place it on a firm, level surface.
3.
Place a piece of 2”x4” lumber under each end of the scale platform. This will hold the platform 1 ½” from the work surface (Figure 1).
Figure 1: Placing 2"x4" under each end of the scale
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4. Remove bearing blocks, weigh beam and associated hardware. These items will no longer be required and may be discarded (Figure 2 and Figure 3).
Figure 2: Remove bearing blocks, weigh beam, and associated hardware
Figure 3: Remove bearing blocks
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5.
Using either a metal cutting wheel or reciprocating saw, remove the hold down lever and its mounting plate. Grind smooth and repaint all bare steel.
6.
Install lower load cell mounting brackets (Figure 4) on both ends of weigh basket. Place the lower load cell mounting brackets inside the scale between the top frame tubes and the weigh basket top side angles. The angle cuts of the mounting brackets should be pointed up and out. Place the horizontal flanges with the slots on top of the weigh basket end tubes. Align slots of angle with the holes of the weigh basket top end tubes, where the lower bearing block used to be located.
Figure 4: Lower Load Cell Mounting Bracket
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7.
Fasten the lower load cell bracket flange to the top tube of the weigh basket with 1/4”x
1-3/4”
bolts, 1/4”
flat washers, and 1/4”
hex nuts with nylon insert (DO NOT TIGHTEN AT
THIS TIME). Check to make sure that the lower load cell bracket is parallel to the edge of
the top tube of the weigh basket.
Figure 5: Lower Load Cell Bracket Installed
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8. Install the 3”
load cells onto lower load cell brackets with ½”-20 x 1”
bolts, 1/2”
flat washer, and 1/2”
lock washer (DO NOT TIGHTEN AT THIS TIME). The cables of both of the load cells should be routed between the frame and top of weigh scale basket with the free ends towards the same side of the scale.
Figure 6: Install Load Cells onto Lower Load Cell Brackets
9. Route the load cell cables to the end of the scale, making sure that the cables will not be accessible to the livestock or are not located in in a position that they could become damaged from abrasion or cuts.
Figure 7: Routing Load Cell Cables
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10. Install the top load cell bracket with Indicator Mounting Post. (Figure 8), using the 1/4” x
1-3/4” bolts, 1/4” flat washer, and 1/4” hex nut with nylon insert on the end of the scale where the old dial head was located. Do not tighten hardware at this point. The vertical flange of the top load cell bracket will be on the outside of the vertical flange of the lower load cell bracket.
Figure 8: Upper Load Cell Mounting Bracket with Indicator Mounting Post
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Figure 9: Installing Top Load Cell Bracket
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11. Install other top load cell bracket on the opposite end of the scale using the same method as described in Step 10.
Figure 10: Upper Load Cell mounting Bracket
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12.
Align hole of top load cell bracket with load cell and install using 1/2-20 x 1”
bolt and 1/2”
lock washer, and 1/2”
flat washer.
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Figure 11: Attaching Load Cell to Load Cell Bracket
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13.
Check the clearance of the weigh basket to the scale frame at this time and adjust so the weigh basket is centered and hangs straight.
14.
Tighten all hardware. Bend small tabs down on both ends of lower load cell angle and fasten with 1/8”
self-drilling screws. Use 1/8” self-drilling screws to fasten the top load cell bracket to the frame.
15.
Install the load cell cable junction box to the flange of the vertical digital indicator tube, using the 4-40 x 1/2”
machine screw and nut. The junction box should be installed so that the single cable is at the bottom of the junction box and the load cell cables are on the right hand side.
16.
Remove the 2’ x 4's from under the weigh basket at this time.
Figure 12: Install Junction Box
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17.
Install the digital indicator onto the post of the upper load cell bracket.
18.
Connect the cable end to the digital indicator on the appropriate mating connector.
Figure 13: Install Digital Indicator
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19.
The scale is pre-calibrated at the factory for immediate use. If you must recalibrate the digital indicator at anytime use the instructions below (also found in the manual of the digital indicator).
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Digital Indicator Calibration Instructions:
1.
Turn Digital Indicator ON.
2.
PRESS On-Off-Zero Button until indicator is ON.
3.
PRESS Tare & On-Off Button at the same time –
hold until indicator shows CAL.-?
4.
PRESS Tare Button once –
wait for a flashing “ZERO”.
5.
PRESS Tare Button again –
Indicator will flash 250.
6.
Add 200 lbs of weight to the scale.
7.
PRESS Print/Hold Button –number 5 will flash.
8.
PRESS Units Button until the number 5 changes to “ZERO”.
9.
PRESS Print/Hold Button –
the number 2 will flash.
10.
PRESS Tare Button –
500 will flash (this will take about 30 seconds).
11.
PRESS Print/Hold Button until the number 5 flashes.
12.
PRESS Units Button until the number 5 changes to 2.
13.
PRESS Tare Button –
this will show a flashing “ZERO”.
14.
Remove 200 lbs weight.
15.
PRESS Tare Button –
wait for non-flashing ZERO (this takes about 30 seconds).
16.
Put 200 lbs weight back in the scale to CHECK WEIGHT.
17.
If weight reading is not correct –
REPEAT steps 1-13.
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Smidley Mfg,, Inc.
551 3rd Ave. SE
P.O. Box 216
Britt, IA 50423
Phone: 800-392-5632
Fax: 641-843-4432 www.smidley.com
www.facebook.com/smidley
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