Denray 3444B Super User manual

OPERATING INSTRUCTIONS
Mini Booth
WARRANTY
This Machine is covered with a 12 month warranty. The warranty covers replacement parts, except filters
and wooden top (if applicable). The only way Denray will cover the labor is the work must be done by
Denray at Denray's Facility. The shipping must be provided by the customer (owner of the machine) both
ways. You may contact the dealer you purchased the machine from, and discuss with them, the
possibility of their assistance in helping to solve the problem in your facility. Denray assumes or accepts
no responsibility more than the cost of the machine. In the case of repair Denray will determine either to
fix or replace the product. Denray reserves the right to modify or change the design of this and any model
of their machines, without changing or updating any previous manufactured machine.
The warranty will not cover any damage done by fire or any other act of nature or if abuse or improper
maintenance was or was not performed.
To find YOUR tables pertinent information please locate the table sticker on your table.
**Please note the image above is a "generic" table sticker for visual purposes only! The table sticker
on your machine reflects how it left the manufacturer and does not reflect any after-market changes
made by previous owners. If you have questions please call Denray Machine at [phone].

Never Allow Any Unauthorized or Untrained Person To Operate This
Machine
Lockout and tagout any time maintenance is performed on this
machine
WARNING
NEVER GRIND OR SAND ANY ALUMINUM OR MAGNESIUM, OR ANY
SPARK CREATING PRODUCT ON THIS MACHINE
Filters are the main need of maintenance, the cleaner the filters are kept the better the machine will
perform. This machine is equipped with timers to clean the filters, every so many minutes a pulse of
air will be released into one of the filters, and a few minutes later the other filter will be pulsed, the
time is needed to refill the tank. The time between pulses are adjustable, refer to the electrical
diagram. Warning if the time is reduced between pulses the filter may plug up reducing the
machines performance. The filters can also be pulsed with the machine off, it may blow dust back
into the work area, so caution should be used here, pulse the machine then turn machine on to pull
dust back into the filters.
The filters will clean better with machine off,
you may shut machine off and before it slows
down to a complete stop, pulse the filter and
allow the fan to prevent the dust from exiting
the filter compartment.
Filter replacement number is on the inside of
the filter door.Be sure to replace with same
type of filter or a filter made of polyester
media.
Bolt that holds the band that
secures the filter to the steel plate
that slides in the filter unit.
This makes removing filters from
the plate very easy, Allowing filter
deep cleaning a much easier task,
thus allowing the filters
to be cleaned better and easier.
Filter replacement number
Is on inside of this door.
MUST replace with the
prop er fire retardant filter
Cartridge Filters 99.95% efficeincy
down to .5 micron
Dust Drawer Clean
regularly, as needed
UMHW Plastic
strips for ease
of sliding the
filters. Must be
in place

This Vee will align into the filter
placed in first
Never Open Any Door
While Machine Is Running
This bolt holds the
levers that raise and lowers
the filters. Once the machine
is in place, remove the nut
from this bolt, once the
bolt is in the hole pull down
on the levers to lock the
bolt in place.
looks like the picture
The cone on the inside of the filters
enhances the cleaning process. It is
bolted into the bottom of the filter.
This shows the location of the four
filters, the black circle shows this
filter is the front right filter.
This seal needs to be inspected everytime the steel
plate is removed. Look to see if any missing rubber,
This seal prevents the dust from by passing the
filter. If this seal is not intact it needs to be
replaced.
Order a booth filter plate seal
Harbor Freight Catalog outlet
sells a blow gun with a long
stem that will reach into all
the filters.
Filter Cleaning is almost the only thing
that has to be done to maintain these
machines. No lubrication to maintain
The cleaner the filters are kept the
better the machine will perform.
The dirtier the filters the harder it is
to pull air through them.

Rem ave muffler with 5/16" hex teck screws
The Rubber seal may be difficult to pu II
apart, but it wilI separate after screws
are removed.
Fork Ii ft hangers for top unit
Use these to I ift off pal let and
to place on the bottom filter
unit after the bottom is set at
desired Iocation.
Fork lift pockets for bottom
also can m ave the complete machine
vi a these holes
When setting the top unit onto the bottom
filter unit, the I ittle side panels need to be removed
so you can see the two hoses to make sure
they cl ear the base of the top unit
When setting top onto the bottom
much attention shou Id be used as
setting, so the holes align onto
each other properly. Use two large
round shafted screw drivers as shown
in the picture below. With 2 people
one on each side with screw drivers
inserted into holes as shown as the top
unit is placed onto the bottom unit
using screw drivers to maneuver the
top unit so holes properly align.
As being let down by fork I ift
PLACE ALL BOLTS into the holes before
any are ti qhtened.
/ Muffler
kSide panels
Watch these hoses
(see next paqe)

The two sides are to be mounted to the unit
Muffler to be mounted and screwed on
Now the top bracket
paqe 3

On each end /side there is a sm alI panel
held on with the 5/16" hex headed screws
that opens to the hoses th at leads to
the air tank, remave the panel and you
wi II see the hose that fits on the hosebib.
placing the hose over the bib and tightening
the hose clamp to secure the hose, so the
filters can be pulsed cleaned.
hose not on
Hose placed over the bib
and the clamp in place.

Top is in location now the sides
are ready to Iocate and place
left side
.
.
.
.
iri to position
'
'
.
Riqht side
Weld on hinge is what secures the sides, just slide
the pin in to the hole. Lubrication Ii ke WD 40 wilI help
all ow the side to slide into hole better.
left side
Top coming in next after sides are
into place.
Riqht side
.
'
.
'
'
•

Th is is the top that mounts to the machine
This is the top th at sits above the 3 ft swinqinq sides
Recepticle for the Iig ht
the switch is on outside
by the motor switch
LED Li qht fixture
'
,::::
•
'
'
=
The tube extensions from
the top wi II slide into these
tub es and secured in with
screws in to the holes
one 4 ft double strip
...__ LED Iig ht, it plugs into
the receptacle in rront
of them achine

Place cover pl ate \ over .
access hole befo re operation
incom inq electric powerbox
\ Dust Drawer, when the filters
L clean the du st wi II falI into
here
Motor controls. this switch box
contains the Magnetic starter
the overload and the Transform er
and the timer to clean the filters
The filter clean er wilI pulse every so
many minutes, and can be adjusted
to be pulsed more or less often .
.___2 Cartridge filters cleans 99. 95% down
to .5 of am icron
Valve to clean the
- - back fi I ter
---- Li qht switch for work area and a recepticle
.---- ---150 PSI Pressure Relief Valve
com pressed air inlet, 9 0-120 psi
------ -
Valve to clean the 1st filter
Drain to Drain moisture
from the tank
Drain as needed often if
air has moisture
Provided hose allows to drain in to
bucket
Ju st erack open and moisture wi 11
come out th en the air wilI follow
Cudomarblfngan powi;r
10 _,., WI Vil/I c/mil and 16 IJITfJ 12/J Vil/I.
Ho-...,Jedfortho3pt,-
12i0Voi11M,jto
<D oom,ef,\ ,-.
power to
,,- -lioht
If you have a high volt leg
be sure to hoak to yellow wire
If motor direction needs to be
,___, _ chanqed rotate black and red wires

Si des opened Positive Air VS Negative Air
Positive air is the air coming from compressed air gun, very forceful
Negative air comes from the fan in thefilter unit,
FYI in the summer time and you are hot you stand on the
positive side of a blowingfan, BUT both sides are equal in air movement
it takes 10% of positive air to over power 100% negative air
The sides are mounted to hinges so the sides can be swung out
Important. ...... If sides are swung out, the opening becomes wider,
which slows down air speed.
If high er air speed is needed a couple options we have , are to
reduce the opening of the front.
Bel ow are a coupie of ideas that may work in you setting.
Vinyl strips, that are easy tom ave through but will prevent
com pressed air rrom blasting back out, from any blow
off gun.
With the vinyl strips on the top, the opening has been reduced
th us speeding up the air speed of the incoming air.
Bo. ttom pictures shows the strips are on a fixed bar
B ihc ti strips that can be easily parted. :
th e pi 'ctures below the strips are on a roller track so the st ~ips:
can b~ separated for easy Ioadinq and unloadinq ,
· ' Strips on a ro II er and moved open '
Fixed strips
Strips on rollers in closed
position

,0q{Alrolcid*',dlS@rfrril-
,&ffitffituilDgPrE
Fco-nlrruceowe!
Fu$'l&2$oteds
th€ tBsftrffi and
tu* 3 prdeds the
Overload dial sd
just above motor
And Two \falves
Boxon top
of machine
120 Volt in here
44G4B0Volt 3PH in here
'l'ie red into orle valve
Tie Uue into other vah,e
rnake sure the wire frorn
tlle tirnerand the rnanual
$r/itch are both positive
Valve 1
On two valves bring
nuetral from one to the other
--oY*:
Light Switch
Valve 2
Generalsettings
\ bod taBs 24 minutes
Grind taHes 18 minutes
\ Hd srnoketab[es 12 minutes
s=sorin-----\ u$o-;ffi*n setHerefor6$omin.
6=36min -\ r-ro.iKa-3r-ron
Ii3ffi gg-*"*-*ffi;=
9-54min 7-.q- \s_^
1o+omin \ffi_--i "

TROUBLE SHOOTING
Motor not running Look to see if L1- L2 -L3
wires are in and secured
and proper voltage is there
Check if wires at bottom of
mag starter to the motor are
in bottom and secured.
The above checks OK In center of the contactor is a rectangle post that is
hooked to coil below. With screwdriver push in and see
if motor will run. If motor will run something is wrong
with the push buttons, That activates the starter.
Motor runs when center
post is held in, but not
by the switches
Make sure every wire is secured on starter if
still no results call Denray for further assistance
If center post is held in
and nothing happens
hook power leads to motor
leads at bottom of mag
starter if motor runs the
problem is the starter.
Call factory for switch replacement
If on switch closes mag
starter and motor does
not run.
FIRST take tester and check see if there is the
proper voltage at bottom of starter
If proper voltage is at
bottom of starter Check to see wiring at motor is properly
hooked together
All the below solutions are meant to be done
only by a qualified technician
Mag starter works
and motor only hums Check for proper voltage
check all wire connections to be tight
check wiring diagram and motor leads to be correct
Filter Cleaning valve will
not pulse Check the three 1 amp fuses on
top of the transformer in the
switch box.
Fuses OK Check wiring in front of and behind the fuses
Fuses and wiring checks
out OK With it being quiet activate the switch and listen
to hear a clicking sound from the valve or valves.
You hear it clicking Make sure air is hooked up to tank
Air is hooked up
and it still clicks Call Denray Replace valve
1
2
3
4
5
6
7
8
9
10
11
12
Motor runs for a
few minutes and
shuts off
Turn the amp dial on overload to increase the
number. Increase only 1 amp at a time
Never increase more than 2 amps above motor
full load amps
13

TROUBLE SHOOTING
Loss of suction on top
of table Dirty filters :: Refer to above
All the below solutions are meant to be done
only by a qualified technician
Excessive exhaust air
on the floor
Rotate filters two times a week 1/4 turn
Timer not working
Machines with timers Check fuses:: Check wiring between mag starter
and timer. Any loose connection,
secure the connection
Filters need to be
cleaned more often Turn dial on timer to a lesser number set at factory at approx. every 20 minutes.
Lots of dirt remaining on
filters after being cleaned Decrease time between cleanings. Check air pressure going into machine.
Keep between 100-140 psi
Filter never completely
cleans all dirt off Not supposed to:: Machine designed to operate at
30% filter blockage. The cleaner a filter is the better
the machine will perform.
Any air that is sucked into the table top must come
out in exhaust somewhere. Look into adding Muffler
to machine
Dirt packed in top 1/3 of
filters
Inside of filters are
rusty colored Blowing water from air tank inside of filter. Drain
air tank more often ( daily if possible) Installation
of a dryer or water trap may be necessary
Filters will not come
clean Pull filters out of machine and take blow gun and
from inside blowing out give filters a deep cleaning
How often do I need
to do the above Some companies do it daily and some weekly
and some monthly. You must determine that
for yourself
Moisture blowed in filters
will make filters harder
to clean
14
15
16
17
18
19
20
21
22
23
24
25
26
Refer to 22
Are filters washable? Spun-bond filters in the grind tables can be washed only
a couple times and must let thoroughly dry.
Filter cleaning service companies may be available in
your area.
Green light on timer
does not work See above
Bad timer needs replacement

All fans are factory balanced from fan company,
fans checked and rebalanced at table MFG, if
table has vibration, fan weights may need to be
moved to another blade.
TROUBLE SHOOTING
All the below solutions are meant to be done
only by a qualified technician
27
28
29
Fan making a loud roar Fan rotation backwards, on three phase,switch
wires on L1 and L2
Lack of proper suction Fan running backwards will produce 2/3rds less
suction check fan rotation
See Drawing Fan
Rotation
Machine vibration on
direct drive systems