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Northwest Marine Technology Multishot, Instruction Manual

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Northwest Marine Technology Multishot Instruction Manual Download Page 11

Need help? Call +1 (360) 764-8850 or email [email protected]  

 v4.2 Jan 2021| Page 11 

2.5

 

Head mold and needle clamping nut with support tube  

The needle clamping nut with support tube is a modified needle clamping 

nut that is supplied with the Multishot (figure 6). The needle clamping nut 

with support tube is designed to stabilize the base of the needle to prevent 

the needle from bending when tagging. Use of the needle clamping nut 

with support tube is encouraged except when using a head mold.  

The needle clamping nut with support tube can also be used to gage the 

depth of needle penetration by applying a piece of tape around the base of the support, or slipping a 

piece of plastic tubing of the proper length over the support. 

Head molds are most often used for snout 

tagging. NMT supplies a variety of sizes and 

shapes. Custom head molds can also be 

constructed. A head mold holder (supplied with 

the Mulitshot) is slipped over the needle and 

onto the front of the magnetizer (figure 7: head 

mold holder). It is secured by tightening the set 

screw at the base of the head mold holder. A 

head mold is then inserted and secured by 

tightening the set screw at the front of the 

head mold holder. 

 

2.6

 

Needle penetration depth 

The depth to which the needle penetrates the specimen is controlled in one of two ways. 

1.

 

With the freehand method (using the Multishot without a head mold) the operator determines 

needle penetration by how far the needle is pushed into the specimen. It is useful to mark the 

needle with a depth stop of some type (tape, tubing, etc.) so you can repeat the tag position for 

each specimen.  

 

2.

 

When using a head mold, needle penetration can be adjusted by setting the distance that the 

needle protrudes from the head mold when the head mold slide is fully depressed. The head 

mold is adjusted in or out by loosening the head mold set screw and moving the head mold to 

the desired position, then tightening the set screw. 

 

 

 

Head mold slide 

Head mold springs 

Head mold set screw 

Head mold 

attachment 

set screw 

Head mold 

holder 

Figure 7:  Head mold holder

 

Figure 6: Needle clamping 
nut with support tube 

Summary of Contents for Multishot

Page 1: ...Handheld Multishot Tag Injector Instruction Manual Northwest Marine Technology Inc 4003 Airport Road Anacortes WA 98221 USA 1 360 764 8850 office nmt us www nmt us ...

Page 2: ...Need help Call 1 360 764 8850 or email office nmt us v4 2 Jan 2021 Page 2 ...

Page 3: ...an 7 2 2 Needles 7 2 2 1 Seating the needle 8 2 3 Loading tag wire 9 2 4 Selecting the tag length 10 2 5 Head mold and needle clamping nut with support tube 11 2 6 Needle penetration depth 11 2 7 Push wire function and adjustment 12 2 8 The Cutter 12 2 8 1 Changing the cutting edge 13 2 9 The counter 13 2 9 1 Resetting the counter 13 3 Troubleshooting 14 3 1 Maintenance 15 3 1 1 Needle care 15 3 2...

Page 4: ...2021 Page 4 3 2 2 Cleaning equipment and supplies 16 3 2 3 Hourly cleaning 16 3 2 4 Daily cleaning 16 3 2 5 Complete cleaning 17 4 Service 18 4 1 Disassembly 18 4 2 Reassembly 21 5 Parts Reference 27 5 1 Multishot body 27 5 2 Supply body 29 6 Tool Kit Contents 31 ...

Page 5: ...essing the wire advance lever A ratcheting mechanism determines the tag length by moving the wire forward a fixed distance 2 The tag is cut by pressing the cut lever 3 The tag is magnetized and advanced to a point just short of the tip of the needle by moving the push rod knob forward until a slight resistance is felt about 40 mm 4 The needle is inserted into the specimen 5 The push rod is moved f...

Page 6: ...end upon specimen size data requirements and recovery methods Tag Implantation Site The area or target where the tag will be implanted can vary for different applications While salmon and trout have traditionally been tagged in the snout other species are tagged in the cheek adipose eyelid jaw scalp nape leg etc Choosing a suitable implantation site is critical to tag retention specimen health and...

Page 7: ...s not advancing smoothly it is likely one of two problems either the needle is not seated properly or the unit needs cleaning Detailed cleaning procedures are described in section 3 2 2 2 Needles The Multishot uses a 1 55 inch 3 94 cm needle This needle will accommodate the use of head molds or a needle clamping nut with support tube see Figure 6 needle clamping nut with support tube see also disc...

Page 8: ...led end 2 Slide the base of the needle the funnel shaped end into the magnetizer until it meets resistance the needle will contact the cutter 3 While pushing gently rotate the needle until you feel the funnel end of the needle slide into the cutter 4 Now slide the needle clamping nut over the needle and thread it into the magnetizer you may need to push the nylon ball into the magnetizer a short d...

Page 9: ...es from the Multishot body Use the tweezers to guide the tag wire if necessary 4 Feed the tag wire by hand into the Multishot as far as it will go 5 To determine if the tag wire has been fully inserted in the cutter press down gently on the cut lever figure 1 A slight resistance will be felt if the tag wire is in the cutter Lower the spool support arm to apply pressure to the two rollers Replace t...

Page 10: ...t of the bottom of the wire supply body Cutting 1 5 length tags requires replacing the standard rachet with the special ratchet The special ratchet which has fewer teeth than the standard ratchet is optional Alignment bar Counter reset button Wire advance lever stop set screw Figure 5 The Multishot counter and stop set screw To inject double length tags the stop set screw does not have to be remov...

Page 11: ...ront of the magnetizer figure 7 head mold holder It is secured by tightening the set screw at the base of the head mold holder A head mold is then inserted and secured by tightening the set screw at the front of the head mold holder 2 6 Needle penetration depth The depth to which the needle penetrates the specimen is controlled in one of two ways 1 With the freehand method using the Multishot with...

Page 12: ... clock wise if you want the cut tag to be injected further out the needle rotate the set screw clockwise if you want to have the tag further back into the needle The approximate position of the cut tag can be determined by observing how the location of the push wire tip changes as the screw is rotated 2 8 The Cutter The cutter figure 9 is a precision device to cut the tags cleanly from the spool o...

Page 13: ...no longer works 2 9 1 Resetting the counter The counter increments by one each time the wire advance lever is depressed Depress the white dot with a dull implement to reset the counter figure 5 The counter will not decrement Keep the cutter clean Clean the cutter periodically during use and after each use Do not let the cutter set for hours or overnight without proper cleaning If you intend to lea...

Page 14: ... stone to remove burrs from end of push wire Push rod jammed or sticky Push rod improperly secured to push wire slide Multishot dirty push wire jammed See reassembly item 5 for securing rod to slide clean Multishot see above for jammed push wire Cutter not cutting smoothly Multishot dirty cutter dull or damaged push wire too long cut lever damaged cut lever spring or cut lever alignment pin screws...

Page 15: ...g equipment moved between locations as having served as a vector in spreading a disease the consequences of such occurrences call for stringent preventative measures Disinfection procedures should also be implemented between groups of fish within a facility when signs of disease exist Tagging should not be conducted during a severe outbreak of disease Chlorine solutions are recommended for use as ...

Page 16: ...2 3 of blank excess coded wire Multishot tool kit Multishot instruction manual Paper towels An open container for soaking parts Material Safety Data Sheets Rubber gloves Eye protection Particle masks or respirator 3 2 3 Hourly cleaning Each hour or more often if necessary the Multishot should be submersed in a bucket of fresh water to remove fish slime and other dirt It is best to hold the unit un...

Page 17: ...ompletely disassemble the Multishot following steps 1 thru 17 in section 4 1 and clean all parts in chlorine solution 2 Use a piece of tag wire dipped in alcohol to clean the inside of the needle holes in the cutter pin holes in the cutter sleeve and the inside of the feed tube 3 Use a piece of tag wire to clean the inside of the feed tube and nesting needle in the groove on the bottom of the feed...

Page 18: ...lot at the rear of the Multishot body To separate the two remove the alignment bar being careful to lift it straight out to avoid binding of the two pins you may have to initially pry the alignment bar loose with a thin implement Once the alignment bar is removed hold the tag supply body in one hand and the Multishot body in the other and pull them straight apart so you do not break the feed tube ...

Page 19: ...iner and cut lever spring The spring and retainer normally come out together 8 Remove the cut lever figure 12 Use your finger to apply slight upward pressure on the cut lever It may be necessary to retract the push rod so that the cut lever can be moved to its up position Using two 5 64 hex head drivers remove the cut lever alignment pin Figure 12 Cut lever removal sequence Only one side of the al...

Page 20: ...it is clear of the push wire slide The push rod is held in the Multishot body by the push rod spring and e clip Remove the e clip and slide the push rod and spring out of the Multishot body 12 With the push wire slide fully retracted use the 3 32 ball driver to slide the base forward away from the feed support tube When the base is fully disengaged from the feed support tube lift up taking the bas...

Page 21: ...pushrod detent should be oriented to the left so that it will accept the push rod when it is pulled back 2 Install the push wire and push wire slide onto the feed tube figure 15 Note the nesting needle which is permanently installed in the groove on the bottom of the feed tube Note the l in the rear end of the push wire which fits in the small retaining hole in the push wire slide Insert screwdriv...

Page 22: ...slide 5 Install the feed tube support feed tube and push wire slide assembled in step 2 into the Multishot body With the push wire slide forward towards the feed tube support the feed tube and push wire slide are inserted in the Multishot body from the top Using the feed tube support as a handle for the assembly slide the feed tube in the hole in the rear of the Multishot 6 Slide the fingers of th...

Page 23: ...he spring on the push rod and secure it with the e clip figure 17 The e clip on the push rod must fit in the recess in the push wire slide With the handle end of the push rod lever horizontal insert the threaded end through the push wire slide and out the hole in the rear of the Multishot body 8 Install and tighten just snug do not over tighten the nut and washer which hold the push rod in place a...

Page 24: ...es will be aligned when the dowel pin at the top of the cutter pin is exactly perpendicular to the long axis of the Multishot When the holes in the cutter pin and sleeve align the push wire will pass through the cutter and extend out the front of the Multishot 12 Thread the push wire through the center hole of the magnetizer and align the two mounting holes in the magnetizer with the matching hole...

Page 25: ...ward pressure on the cut lever Insert the cut lever spring through the opening in the top of the cut lever and make sure the end of the spring goes in the recess in the top of the feed tube support Install the cut lever spring retainer by inserting it in the slot in the cut lever and while pushing it down turn it 90 degrees to lock it in place 18 Slide the body cover into the slots in the Multisho...

Page 26: ...body The two pieces fit together fairly tightly so some resistance will be felt 22 Insert the alignment bar to secure the supply body to the main body 23 Test the now fully assembled Multishot by checking for smooth operation of cut lever through full range of motion With cut lever depressed test that the push rod slides forward and retracts smoothly ...

Page 27: ...LEV009755 CUT LEVER SPRING SPR017249 CUT LEVER MUL01043 1 CUTTER CUT000004 BODY MUL010423 BODY COVER MUL010424 MAGNETIZER ASSEMBLY MAG000006 BASE MUL010422 CUTTER ALIGNMENT PIN PIN011665 SOCKET HEAD CAP SCREW one each side SCR014610 FLAT WASHER one each side WAS019618 MAIN ASSEMBLY SOCKET HEAD CAP SCREWS SCR014830 ALIGNMENT BAR MUL010420 ...

Page 28: ...CLAMPING NUT WITH SUPPORT TUBE NEE000015 NEEDLE CLAMPING NUT NEE010580 FEED TUBE SUPPORT FEE005534 FEED TUBE FEE005531 PUSH WIRE PUS000001 DETENT SPRING SPR017246 DETENT MUL010425 PUSH ROD ASSEMBLY PUS000002 DETENT NUT MUL010426 PUSH ROD SPRING SPR017246 E CLIP RET014250 PUSH WIRE SLIDE MUL010435 SPLIT WASHER WAS019620 2 56 BARREL NUT SPA017089 ...

Page 29: ...ength DRI000004 WIRE ADVANCE LEVER SPRING SPR017249 ARM SHOULDER SCREW SCR015530 ROLLER PRESSURE ARM SPR017256 ROLLER PRESSURE ARM SPRING SPR017256 IDLER ROLLER IDL007838 IDLER SHOULDER SCREW SCR015525 4 40 x 5 16 SOCKET HEAD CAP SCREW 2 SCR014830 PULL SPRING PUL012035 WIRE ADVANCE LEVER WIR020670 PAWL SPRING SPR017254 PAWL PAW011290 DRIVE ROLLER SHOULDER SCREW SCR015530 ...

Page 30: ...SUPPORT ARM SHOULDER SCREW SCR015521 SPOOL SUPPORT ARM SPO017190 WIRE GUIDE SET SCREW SET016615 TAG SUPPLY BODY TAG018332 COUNTER COU000002 2 56 SOCKET HEAD CAP SCREWS 4 SCR014615 WIRE ADVANCE LEVER STOP SET SCREW SET000004 WIRE GUIDE NEE020770 SPOOL RETAINER 6 32 PAN HEAD SCREW SCR015080 TAG CARTRIDGE COVER TAG018332 ...

Page 31: ...nch 4 Hex ball driver 5 64 inch 5 Hard wire diagonal cutter 6 Needles 1 package of 5 7 Screwdriver medium blade 8 Needle nut driver 9 Loupe 5x 10 Hex ball driver 0 050 in 11 Head mold holder assembly 12 Pin vise with reamer 13 Hex nut driver 3 16 in 14 Spare screws standard ratchet for 1 5 length tags optional 15 Multishot CWT Injector 16 Forceps 17 Arkansas stone 1 2 3 4 5 6 7 8 9 10 12 15 11 16 ...

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