Denray 2872B User manual

OPERATING INSTRUCTIONS
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.
2872B
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
STEEL 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 may be 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 manual push buttons are the black and white buttons on the switch panel
door. Push one button wait 10 seconds to allow air tank to refill and pulse the other button.
This manual procedure needs to be done 3-5 times per hour if the machine is not equipped
with timers to activate
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.
Dust Drawer Clean
regularly, as needed

Motor and Fan View
Motor Door Cover Plate
Machine Floor Opening
Dust Drawer, Remove and clean
as needed.
Cartridge filter, cleans at
99.95% effeceincy down
to .5 Micron.
Rotate filter 1/4 turn 2
times per week.
Filter replacement number
can be found on a tag on
inside of this door.
2872G with muffler2872G with HEPA Bank
3-12x24x24 HEPA Filters
Any Questions Call Denray Machine at 800-766-8263
This machine is equipped with the option of sound reducing
foam by placing the foam inside the motor and fan
compartment. It reduces the sound around 7-8 Dbs Muffler
reduces 10-12 Dbs.
If a muffler is desired, it can be added by removing the cover
plate on the motor door, and placing it on the machine floor
opening, and bolting the muffler to the door
2872B Additional Options

2872B Inside View
Air Tank
Never Open Any Door
While Machine Is Running
Solenoid to
activate the
valve 120
Volts
Electrical
Plug that
screws on
the solenoid
by one screw
Valve to release air into the
filter to clean it
Compression nut that holds valve
to the tank. Always apply a small
amount of either grease or oil to
the threads when reassemling to
the tank.
150 PSI Pressure relief valve, 1/4"
NPT Male, if you have air leaking
from the tank area, this is the
1st place to check.
Clip that releases
the solenoid from
the valve
To access these parts of the machine the access panel above the
motor compartment must be removed. This can be removed by
removing the 5/16" Hex head screws and lifting the panel, removing
from the black colored seal, will be a little tough. The panel will
be slightly stuck to the seal. A flat blade screw driver or a flatbar will
be a great asset in the lifting the panel up.

There are a few different ways to hook the
compressed air into the machine.
The tank needs to be drained on a
frequent schedule. With the inlet and
drain on the bottom of the tank and the
machine. Denray had to quit placing
the inlet and drain pipe to the machines
due to the breakage. Then sending
the needed parts became a hassle
because whatever we sent, somebody
always wanted something else, so we
just make the recommendation. A simple
line in will work fine, but to drain the
water from the tank, will waste air and
may blast the moisture over an
undesirable area. That may be done by
disconnecting the hose or air line. The left
piping picture shows that.
The same pipe fittings and two 1/4" Brass
valves will make this job so
much easier. With the two valves
turn the one allowing air into the tank off.
Then just barely open the valve that tees
off draining any moisture in the tank.
Draining the moisture will lose very little
air. But the incoming air must be turned
off, or no moisture will leave the tank.
This piping method will allow the air line
to stay hooked up to the machine, and
drain the tank. With this method the
airline can be removed, leaving the air in
the tank. This method will drain the
moisture out, by barely opening the valve
allowing the moisture to just drip out, or
spray out with very little pressure
allowing the moisture spray out on the
floor. A short hose may be used to place
the moisture into a small can for disposal.
Goes under the
air tank. which
is under machine
Incoming airline, 90-120 PSI
2872B or 2872G only