BAM 1020-9800 Manual Rev W.docx
Page 10
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Mobile Shelters:
If the BAM 1020 is being installed into an equipment rack in a mobile
trailer or van, then additional care should be taken to ensure that the mounting can
handle the additional strain. The foam shipping rings must also be inserted any time a
mobile shelter is moved with the BAM 1020 inside.
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Rack Modifications:
It is usually necessary to modify the top plate of the equipment
rack by cutting a 2 inch diameter (75mm) hole to allow the inlet tube to extend through
to the ceiling. The BAM 1020 dimensional drawings below show the location of the
inlet.
Note:
The inlet heater installs onto the inlet tube two inches above the top of the
inlet receiver of the BAM 1020. If the BAM 1020 is to be mounted in a rack, it will be
necessary to leave extra room above the BAM 1020 in the rack for the heater, or to
make the hole in the top of the rack larger in order to clear the heater diameter. The
heater is supplied with a foam insulation sleeve which may be modified as needed.
Make sure these parts are going to fit before installing the BAM 1020.
2.5 BAM 1020 Installation Instructions
When installing the BAM 1020 into a shelter or structure the following issues should be taken
into consideration.
1.
Roof Modifications:
Determine the exact location where the BAM inlet tube will pass
through the roof of the shelter
, and drill a 2 ¼” or 2 ½” (60mm) diameter hole through
the roof at that location. Make sure the hole is directly above where the inlet receiver is
to be located, so the inlet tube will be perfectly vertical. A plumb weight is useful for
determining where to locate the hole. Note that the inlet receiver on the BAM 1020 is
slightly off-center! BX-902/903 mini shelters do not require any roof drilling.
2.
Waterproof Roof Flange:
Apply all-weather silicone caulking around the top of the
hole, and install the BX-801 roof flange onto the hole. The threaded barrel of the
flange is usually installed downward. Secure the flange in place with four lag bolts or
self-tapping screws (not supplied). Caulk around the screws to prevent leaks. Apply
Teflon tape to the threads of the gray plastic watertight fitting, and screw it into the roof
flange tightly. BX-902/903 mini shelters come with a roof flange installed, and only
need the watertight fitting.
Note:
Some users prefer to fabricate their own roof flange
instead of using the one supplied by Met One Instruments, due to factors such as high
snow loading or a sloped roof. Equipment damage from a leaking roof is not covered
under warranty.
3.
Inlet Tube Installation and Alignment:
Remove the white threaded cap and rubber
seal from the watertight inlet tube seal assembly. This makes it easier to install the
inlet tube since the rubber seal is a tight fit. Lower the inlet tube through the flange
assembly and into the inlet receiver on the BAM 1020, making sure that the inlet tube
is fully seated. It is very important for the inlet tube to be perpendicular to the top of the
BAM 1020. The nozzle may bind if the inlet is misaligned. A simple check is to rotate
the inlet tube back and forth by hand before tightening the roof flange seal or the BAM
1020 inlet set screws. If the inlet tube is straight, then the tube should rotate fairly
easily while inserted into the BAM 1020. If it does not rotate, check the inlet tube for
vertical alignment or move the BAM 1020 slightly.
