BNP DOUBLE 65 and DOUBLE 220 - DUAL STATION SUCTION CABINET Page 13
© 2016 CLEMCO INDUSTRIES CORP.
www.clemcoindustries.com
Manual No. 22963 Rev. D, 07/16
the interlock switch. The interlocks should stop the
blasting when the doors are opened, and permit blasting
when the doors are closed. NOTE: Negative pressure
inside the cabinet may cause the doors to flex inward.
Tests should be performed with the exhauster running.
5.8 Optional
Manometer
These instructions show several methods of taking
static-pressure readings (negative pressure) on cabinet
reclaimers, using a flexible tube manometer. Use the
method best suited for the application. The instruction
explains the processes for taking periodic readings and
shows how to permanently install the manometer for
taking frequent readings. Permanent fittings should be
installed when rigid ducting is used, or when the
manometer installation is permanent. Use silicone sealer
or other sealant to seal around the fitting to prevent
leaks. The fitting should be capable of being capped
when the manometer tube is removed. . Capping the
fitting will prevent leaks that alter the reclaimer’s
separation efficiency. The readings are reference points
so it doesn’t matter where the readings are taken as
long as they are always taken at the same location.
Taking readings at different locations could produce
different results. Static-pressure readings at the door are
generally .5" to 1" lower than those taken above the
reclaimer.
5.8.1
Refer to directions packed with the manometer
for preparation and operating instructions for the
manometer.
5.8.2
Connect one end of the 3/16" ID tubing to one of
the tubing connectors (elbow) at the top of the
manometer by pushing it over the barbed adaptor.
5.8.3
Leave the needle protector on the needle and
insert the needle into the other end of the tubing. The
ends of the tubing must fit tight on the manometer and
needle; leaks will give inaccurate readings.
5.8.4
Open both manometer valves (elbows) per the
instructions provided with the manometer.
5.8.5
Magnets on the manometer hold it in position on
the reclaimer body. The manometer must be vertically-
plumb so the fluid is level on both sides.
5.8.6
Adjust the slide rule to align the zero with the
fluid level. Refer to Figure 19
5.8.7
Needle placement: Ref. Figure 18.
5.8.7.1
Taking readings in the flex hose:
Remove the
needle protector, and insert the needle into the flex hose
approximately 8" from the top of the reclaimer.
5.8.7.2 Taking readings at the reclaimer door:
Open
the reclaimer fill door, remove the needle protector and
place the needle so the point is inside the door opening.
Carefully close the door on the needle. The side of the
needle will embed into the rubber, creating an airtight
seal.
Figure
18
5.8.8
Turn the exhauster ON. The negative (static)
pressure will move fluid in the tube.
NOTE: Readings must be taken with the cabinet
doors open, and with the exhauster running.
5.8.9
To find the static pressure, add the number of
inches the fluid travels up one column to the inches the
fluid travels down the other column. Refer to the
example in Figure 19.
5.8.10
After the readings are taken, replace the needle
protector. Close the manometer valves and store the
manometer in the original container in a clean area.
NOTE: If the manometer installation is permanent, the
manometer may remain on the reclaimer body after the
valves are closed.
8
Insert the needle into
straight section of flex
hose, about 8-inches
above the top of the
reclaimer.
Place the needle so the
point is inside the door
opening. Carefully close
the door on the needle.
Reclaimers are for reference and
may differ from those shown.
For taking frequent readings,
install a permanent fitting in
the reclaimer wall, just below
the inner cone as shown.
