JCHADWICK 4400M User manual

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4400M
Surface Replication Kit
with Microset® Compounds
USER MANUAL
Scan QR Code (with
smartphone camera)
to view a short training
video on our website.
JCC DOC# B5 March-2020

Each 4400M Kit Includes:
1. 1 x Dispensing Gun (P/N 4400-1)
2. 5 x 50ml Replicaon Compounds (P/N 4400-2RT/RF)
3. 1 x Nozzle Pack, 50/Pack (P/N 4400-31),
4. 1 x Pack of Backing Slides, 50/Pack (P/N 4400-4)
5. 1 x Pack of Backing Paper, 100/Pack (P/N 4400-5)
6. 1 x Tilng Stage Base (P/N 4400-7)
7. 1 x Tall Micrometer Base (P/N 8400-27)
8. 1 x Carrying Case (P/N 4400-6)
4400M Surface Replication Kit

Compounds and Curing Times

ASSEMBLE THE DISPENSING GUN
Raise slide release lever on
dispenser body and insert
piston slide.
Keep slide release lever raised
and push slide back as far as
possible.
Lower slide release lever.
Cartridge Clip
Piston Slide
Slide Release Lever
https://www.microset.co.uk/

INSTALL
COMPOUND
CARTRIDGE
INSTALL
MIXING
NOZZLE
Li cartridge clip on
dispensing gun and slide
cartridge into place,
aligning larger side of
cartridge with larger slot.
Lower cartridge clip to
secure.
Remove cap from
compound cartridge.
Posion mixing nozzle
on cartridge and rotate
clockwise 1/4 turn to lock
in place.
For new cartridges only,
dispense a small amount
of compound on to waste
paper.
MICROSET is supplied in a two part cartridge which is dispensed
through a stac mixing nozzle using a hand held dispenser. The
two components of the cartridge are mixed together as they pass
through the stac mixing nozzle during the dispensing procedure.
This ensures air-free mixing and minimum wastage of material during
applicaon.
The curing rate for MICROSET compounds varies with temperature.
Low temperature increases curing me. High temperature decreases
curing me. Refer to the details printed on the cartridge.

Note: The 4400M Microset Kit includes a Tall Tripod Base (8400-27)
fand the Tilng Stage Base (4400-7) for use with the Model 8400
Opcal Depth Micrometer. For instrucons on taking measurements,
refer to the 8400K User Manual.
MAKING REPLICAS
1. Squeeze dispenser handle steadily to apply the MICROSET
compound. Keep the nozzle end touching or as close to the surface
as possible to avoid trapping air in the replica and to force the
material into surface features. Overlap runs to cover larger areas.
Weave the nozzle end from side to side if a wider bead is required.
Note that each weave should overlap the previous one (similar to
welding). When replicang vercal surfaces, work upwards.
2. Do not apply excessive hand pressure to the dispenser as this
may damage the operang mechanism.
3. Do not stop ow of the material through the nozzle for longer
than the working life of the MICROSET grade being used. Once the
working life has been exceeded a new nozzle will be needed.
4. If desired, apply backing slide or paper to surface of exposed
compound. Allow the MICROSET compound to cure (see cartridge
for the curing me) and then carefully peel o the cured replica
from one side. To prevent damage and loss of recorded detail do not
touch the replica surface and store the replica in a plasc bag.
5. Aer use, remove the nozzle and replace the cap. To re-use the
cartridge, t a new nozzle.

TROUBLE SHOOTING
Dispensing gun fails to pressurize cartridge.
Damaged piston slide. Check piston slide and replace if necessary.
Compound does not bond to backing paper.
Wrong side of backing paper used. See backing paper instrucons.
Material cures in the nozzle.
Stop/Start operaon or nozzle aached for a long period before use.
Replace nozzle and proceed without delay.
Material does not dispense from the nozzle aer replacing previous
nozzle.
Cartridge ports have cured over. Remove cured material or discard
cartridge. The nozzle can be used as a seal for up to 4 months.
When using a new cartridge the rst part of the replica does not
cure.
Cartridge not leveled before aaching nozzle. Cartridge will not work
sasfactorily with subsequent nozzles. To level the cartridge: prior
to ng nozzle, dispense small amount of material unl an even
amount issues from both cartridge ports.
Material cures too quickly or too slowly.
Incorrect grade being used for the ambient temperature. Choose a
grade appropriate for the condions. See compound chart.
Air bubble entrapment.
Poor applicaon. Keep the nozzle in contact with the surface. For
blind holes place the lip of the nozzle at the boom of the hole.
Replica distorts and resoluon is poor when examined under a
microscope.
Replica too so when removed due to incomplete curing. Extend
curing period.
Replica surface does not cure.
Cure inhibited by surface contaminaon e.g. grease, oil, etc. Clean
surface with solvent/ suitable cleaning agent and reapply compound.
Replica breaks during removal.
Severe re-entrant geometry or replica not completely cured. Allow
adequate curing me. Remove slowly applying constant pressure.
Excessive voids in replica when using thixotropic materials.
Air entrapment due to poor applicaon. Keep the nozzle in contact
with the surface. Overlap runs and use backing paper.
Replica adheres to surface.
Mechanical aachment to brous or porous surface. Remove slowly
applying constant pressure.
Base piston on cartridge leaks.
Soluon: Excessive pressure on dispensing gun due to nozzle
blockage. Remove cured material if possible or replace cartridge.