INSTRUCTIONS for
RAMA Air Filter System
FUMES AND GASES, particularly in confined spaces, can
cause discomfort and physical harm. Do not breathe
fumes and gases. Shielding gases can cause asphyxiation. Therefore:
a. Always provide adequate ventilation in the work area by
natural or mechanical ventilation means. Do not weld, cut,
or gouge on materials such as galvanized steel, stainless
steel, copper, zinc, lead, beryllium, or cadmium unless
positive mechanical ventilation is provided. Do not breathe
fumes and gases from these materials.
b. Do not operate in locations close to chlorinated hydrocar-
bon vapors coming from degreasing and spraying operations. The heat or arc rays can react with solvent vapors to
form phosgene, a highly toxic gas, and other irritant gases.
c. If you develop momentary eye, nose, or throat irritation
while operating, this is an indication that ventilation is not
adequate. Stop work and take necessary steps to improve
ventilation in the work area. Do not continue to operate if
physical discomfort persists.
d. For specific ventilation recommendations, refer to ANSI/
ASC Standard Z49.1, available from the American Welding
Society, 550 N.W. LeJuene Road, Miami, FL 33126.
F-15-093
March, 1995
1. Always use face seal and head gear.
2. Replace filters regularly.
3. Keep battery pack fully charged.
4. Maintain entire system in good working condition.
1. BATTERY
The Filter Unit is fitted with a rechargeable battery pack
which requires charging before use. Check that the pack is
plugged into the motor circuit. Connect the battery charger
plug into the charger socket located underneath the Filter
Unit behind the red protective cover switch on the main
supply, refer to figure 1.1. The L.E.D. indicator will light if the
charging circuit is satisfactory. Should it fail to light, the
services of a competent electrician are required to investigate the cause of malfunction.
CAUTION: Use the charger supplied with the filter unit only.
Only to avoid irreparable damage.
Test your own environment — it’s vital. Dust particulate
levels vary according to each work place environment.
Therefore, it is essential that you conduct work place tests
under local conditions. Be aware that contaminants generated while welding, cutting and gouging materials such
as stainless steel, copper or those containing chrome
could be considerably more hazardous and may require
special precautionary measures.
PRE-OPERATIONAL INSPECTION
Carry out an initial visual check for damage to the Filter unit;
if damage is found, do not use. After the visual check, follow
steps 1, 2, & 3 before use to ensure the respirator is working
correctly.
Follow the Guidelines listed below to achieve effective
performance on the system.
110V
Figure 1.1
Batteries are supplied in a discharged condition, and must
initially be charged for 20 hours with their matched charger
before use. Subsequent charges only requires 14 hours. It
is better to slightly over-charge the batteries than to undercharge them. Constant undercharging may impair the
battery capacity. Batteries may be stored in either the
charged or discharged condition, but if the storage is likely
to be of long duration, it is recommended that the battery be
charged first. If it is necessary to store the batteries in a
charged condition, every 2-3 months the batteries should
be discharged then recharged for 14 hours to ensure that
their capacity is not unduly impaired. The battery MUST be
charged for 14 hours before use.
CAUTION: The red protective cover must be kept in position
on the charging socket except when charging the
battery. If the motor starts to run when charging
the battery, depress switch on top of the filter unit.
Be sure this information reaches the operator.
You can get extra copies through your supplier.
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2. FILTER UNIT
a. Fit the filters correctly, make sure both turn buckles are
correctly latched in the enclosed position with the filter
retaining clips in the correct slot in the over center catch,
refer to figure 2.1.
Figure 2.1
b. Ensure that the Filter Unit, or air supply hose and
headgear are not damaged.
c. The belt should be correctly threaded through the belt
loops, and adjusted to the correct size of the wearer.
d. Connect the headgear to the Filter Unit using the bayo-
net coupling on the air hose. It should lock into position.
3. AIRFLOW TEST
Once the battery has been charged and the filters have
been fitted, the airflow should be checked. With the
bayonet fitting removed, place the airflow indicator over
the Turbo air outlet. The Turbo is switched on and off by
depressing the center red button on the top. Airflow is
satisfactory if the ball reaches the top of the tube, refer
to figure 3.1.
Figure 4.1
Figure 4.2a
Figure 4.2b
Figure 4.2c
b. To install a face seal, refer to figure 4.3 a, b and c. The
face seal will screen out the dust particles from entering
in the breathing zone of the welder from underneath of
the helmet. The worn out face seal should be replaced
promptly.
10mm
Figure 4.3a
Figure 4.3b
Figure 4.3c
c. To install a Head Cover, refer to figure 4.4. Install a piece
of velcro supplied with the head cover on to the helmet
edge. Put the head cover on the helmet. The head cover
should be cleaned or replaced periodically.
Figure 3.1
If the ball does not rise or only just rises from the bottom
of the tube, the Filter Unit should be checked by battery
or filter substitution. In the event of an airflow test being
done on a partially used filter or partially discharged
battery, then the Filter Unit should be checked by filter
substitution and/or battery charging.
4. ASSEMBLY AND FITTING
a. For assembly of filters refer to section 2 above. Fit belt
to Filter unit as shown in figure 4.1 below. Assemble
head channel and welding helmet as shown in figure 4.2
a,b, and c. Fit bayonet hose fittings to head channel and
Filter unit. Adjust waistbelt and welding helmet head
band to give comfortable fit.
VELCRO
VELCRO
UNDER
FABRIC
Figure 4.4
CAUTION: For the unit to be fully effective, always use head
cover and face seal.
CLEANING AND MAINTENANCE
After use, the Respirator should be cleaned in the following manner:
a. Remove excess dust from the outside surfaces using
a damp (water) cloth.
b. Remove both prefilter and main filter, ensuring dust
falling from filters does not enter fan inlet. Filters must
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be discarded into a ‘safe’ container. (If circumstance
dictate that main filters are to be reused, they must be
stored in a manner that no contaminant is released into
the atmosphere or reach the clean side of the filter. The
useful life of filters must be determined by a competent
person taking site conditions into account).
c. The filter retainer may be cleaned in warm soapy water,
rinsed in cold water and allowed to dry naturally. DO
NOT use heat.
d. The outside of the Filter Unit should be cleaned with a
soft clean cloth, and warm soapy water. Do not use
excessive amounts of water or allow water to get inside
of Filter Unit. Wipe the Filter Unit with a clean cloth
moistened with cold water. Wipe off excess water with
a clean dry cloth and allow the Filter Unit to dry naturally.
DO NOT use heat.
CAUTION: Do not allow water to get into the Filter Unit. It will
cause irreparable damage to either the motor or
battery. Do not allow water to get into the battery
charging socket.
During cleaning it may be necessary to take
precautions against any harmful dusts and/or
vapors which may be on the Filter Unit or filters.
b. Main Filter: Place louver filter retainer on top of main
filter.Rotate both red turn buckles to unlock position
(see sketch) and open over-center catch.
Place the main filter into the Filter Unit body, so the filter
seal is in contact with the body all around its periphery.
If the filter is placed “back-to-front” into the body it will be
obvious that the two pillars on the Filter Unit body, are
preventing the filter from being correctly positioned.
With turn buckles in “lock” position, close over-center catch
into red “I”bars. Rotate 90 degree to click into “locked” position.
2. REPLACEMENT OF BATTERY PACK
Remove belt from Filter Unit. The Battery pack is located under
the smaller of the two backplates of the Filter Unit.
Unlatch over-center catch plates. Unlatch and remove smaller
cover by releasing the two catches from under the belt loop
(see sketch). When replacing battery, ensure the plug is
correctly inserted into the socket and that the cable cannot be
trapped and damaged.
3. STORAGE
Do not use materials that are likely to damage
plastics, e.g.; gasoline, organic solvents, or abrasive cleaning agents to clean the Filter Unit.
The Respirator should be stored in a clean, dry atmosphere
within the temperature range -4° F to 158° F. It should be
protected from direct sunlight and any material known to
damage plastics, e.g. gasoline and solvent vapors.
1. CHANGING FILTERS (Refer to Fig. 2.1)
GENERAL
The Filter Unit comes with a prefilter and main filter.
a. Prefilter: The prefilter is fitted between the inside of the
louvre cover and the wire clip. It is replaced by unlatching the wire clip, removing used filler, placing the filter
against the inside of the louvre cover and pushing the
clip back into position until clicks.
TROUBLESHOOTING
NOTE: All troubleshooting procedures described below MUST be carried out in a clean air environment. There are NO user
serviceable parts inside the Respirator unit. Air flow should be checked according to “Airflow Test” described in Preoperational Inspection Section.
The following operational faults may be investigated by the user by observing these procedures:
Fault Possible Cause Actions
No air flow 1. Unit not switched on 1.Operate switch several times while observing air flow indicator
2. Battery pack disconnected 2.Check battery pack connection and perform air flow test again
3. Battery discharged 3.Recharge battery pack and repeat flow test
4. Clogged filter(s) 4.Check filter or filters for clogging or other obstruction; replace as
5. Blown fuse (2amp Littlefuse) 5.Located inside the filter unit. Remove filters and four(4) Phillip
Insufficient air flow 1. Battery discharged 1.Recharge battery pack and repeat air flow test.
2. Clogged filter(s) 2.Check filter or filters for clogging or other obstruction; replace as
Unit works with 1. Blown fuse (2amp Littlefuse) 1.Located inside the filter unit. Remove filters and four(4) Phillip
charger but not screws to remove the inside plate.
with battery pack
a. Respiratory Protection. The Filter Unit is designed to be
used with its own range of headgear. It is essential that
only genuine manufacturer’s spares and replacements
are used. Unauthorized alternatives may impair the
performance. Renew prefilters each shift and main
filters as determined by a competent person.
b. The Filter Unit is not recommended for use outside the
temperature range of 23° F to 122° F.
necessary
screws to remove the inside plate.
necessary
If the actions described above fail to produce a satisfactory result, then the Respirator unit must be returned to the supplier for
examination and/or repair.
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RAMA AIR FILTER SYSTEM STOCK NUMBER
AIR FILTER UNIT* WITH AUTORAMA WELDING HELMET 14F70
AIR FILTER UNIT* WITH SCANORAMA (See Note 2) WELDING HELMET 14F71
AIR FILTER UNIT* WITH WELDORAMA WELDING HELMET (See Note 1) 14F72
AIR FILTER UNIT* WITH LIFTORAMA (See Note 1) WELDING HELMET 14F73
* RAMA Filter Unit, includes: Waist Belt, Battery, 110VAC Battery Charger, Air Flow Indicator, Air
Channel with Foam, Hose with Connectors, Rubber Band, Velcro Tape, Face Seal, one each Pre-
Filter and Main Filter .................................................................................................................... 14F58
NOTE:
1. Helmets DO NOT come with filter plate. Order desired shade.
2. Helmet comes with a large filter screen and a filter plate, each of shade 5.
This gives a combined Shade of 10. Order Filter Plate to get other shades.
3, For Welding Helmet Accessories refer to Manual Page F8810.
FILTER UNIT
AIR
CHANNEL
HOSE
ASSY.
RUBBERBAND
BELT
AIR
FLOW
INDICATOR
110 VAC
FACE SEAL
MAIN
FILTER
VELCRO TAPES
BATTERY
CHARGER
PRE-FILTER
Description Stock Number
Pre-Filter (Box of 25) ........................................................................................................................................................ 14F60
Main Filter (Box of 5) ........................................................................................................................................................ 14F59
Nylon Belt ......................................................................................................................................................................... 14F64
110VAC Battery Charger ................................................................................................................................................. 14F63
Battery .............................................................................................................................................................................. 14F67
Air Flow Indicator ............................................................................................................................................................. 14F62
Air Channel, Includes Air Channel assy with Foam, Rubber band & Velcro ...................................................................14F68
Face Seal ......................................................................................................................................................................... 14F61
Hose Assy. ....................................................................................................................................................................... 14F66
Fuse, 2 Amp 250V Littlefuse ........................................................................................................................... Purchase locally
Spare Parts Kit, includes 5 each of Rubber Bands, O-Rings for Hose assembly and Velcro Tapes .............................. 14F75
Head Cover (Not Shown) ................................................................................................................................................. 14F74
F-15-093 3/95 5C Printed in U.S.A.
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