Triangle Engineering of Arkansas FHI SERIES PANEL FANS - Manual (Page 3)

NOTE
• Care should be taken to follow all local electrical, safety and
building codes.
• Provisions of the National Electrical Code, as well as the
Occupational Safety and Health Acts should be followed.
• All motors are checked prior to shipment; however, if motor
defects should develop, prompt service can be obtained from
the nearest authorized service station of the Motor Manufacturer
while under warranty. Exchange, repair or replacement will be
provided on a no charge basis if the motor is defective within
the warranty period. The Triangle representative in your area
will provide a name and address of an authorized service sta-
tion if requested. Do not return defective motors to Triangle
Engineering. WARNING: Motor guarantee is void unless over-
load protection is provided in motor wiring circuit.
MAINTENANCE
Do not attempt any maintenance on a fan unless the electrical
supply has been completely disconnected. If a disconnect switch has
not been provided, remove all fuses from the circuit and lock the fuse
panel so they cannot be accidentally replaced.
Lubrication is a primary maintenance responsibility. All bearings
should be checked periodically. V-belts also, should be inspected for
tightness. If the fan is installed in a corrosive or dirty atmosphere,
the propeller, inlet and other moving parts should be cleaned peri-
odically.
MOTOR LUBRICATION: In general, standard motors that are fur-
nished have prelubricated, sealed-for-life ball bearings which require
no lubrication for seven to ten years of normal service. In cases where
motors have been ordered with greasable bearings, these bearings
have been lubricated at the factory and do not require any atten-
tion for one year under normal conditions. If the particular motor is
equipped with grease relief fittings, these should be removed to allow
old grease to flow out when maintenance is performed. Whenever
possible, grease should be applied while the motor is running. This
practice should not supersede any safety consideration. DO NOT
OVER GREASE - as most lubricants deteriorate motor windings,
thereby reducing motor life.
FAN SHAFT LUBRICATION: Fan shaft ball bearings are furnished
in either the pre-lubricated sealed-for-life type or the greasable type
depending on what was ordered. Here again, the pre-lubricated type
requires no servicing for seven or ten years of normal use, and the
greasable type are factory greased eliminating the need for greasing
initially. Whenever grease is required, depending on the lubricating
schedule, it should be applied while the shaft is rotating. This practice
should not supersede any safety considerations.
IMPORTANT: Use low pressure grease guns only. High pressure
guns tend to blow out or unseat bearing seals, leaving the bearing
open to collect grime, dust and foreign particles.
LUBRICATION SCHEDULE:
a. Under average conditions where ambient temperatures do not
exceed 120°F, lubrication is required once or twice a year.
b. Under a dirt laden atmosphere where there is a temperature
range from 10°F. to 120°F, lubrication is required from three to
six times a year.
c. Under extreme temperature conditions and extremely dirty atmo-
spheres, lubrication should be scheduled at least once or twice a
month.
PARTS REPLACEMENT: If replacing parts, do so with prop-
erly selected components, which duplicate original parts correctly.
Incorrectly sized shafts, belts, pulleys, propellers, etc. can damage
the fan.
SPECIAL PURPOSE SYSTEMS
Explosive, corrosive, high temperature, etc. conditions may
require special construction, inspection and maintenance. It is neces-
sary to observe the fan manufacturer’s recommendations and limita-
tion concerning the type of material to be handled by the fan and its
application to special conditions.
THE HIDDEN DANGER
In addition to the normal dangers of rotating machinery, fans pre-
sent an additional hazard in their ability to suck in not only air, but
loose material as well. Solid objects can pass through the fan and
be discharged by the propeller as potentially dangerous projectiles.
Intake to duct work should, whenever possible, be screened to pre-
vent the accidental entrance of solid objects.
Access doors to a duct system should never be opened when the
fan is running. On the downstream (or pressure) side of the system,
releasing the door with the system in operation may result in an
explosive opening. On the upstream (or suction) side, the inflow may
be sufficient to suck tools, clothing, etc., and may even cause a man
to lose his balance.
When a fan is being started for the first time, a complete inspec-
tion of the duct work and interior of the fan should be made (with the
power locked off), to make certain there is no foreign material which
can be sucked into or blown through the duct work.
FAN GUARDS INLET AND OUTLET
GUARDS DRIVE GUARDS
All fans have moving parts which require guarding in the same
way as other moving machinery. In areas which are accessible only
to experienced personnel, a standard industrial type guard may be
adequate. This type of guard will prevent the entry of thrown or
dropped objects with a minimum restriction of air flow.
Where the fan is accessible to untrained personnel or the general
public, maximum safety guards should be used, even at the cost of
some loss of performance. Fans located less than 7’ above the floor
require special consideration as specified in the Occupational Safety
and Health Act. Roof mounted equipment will require guards when
access is possible, for example, by climbing children.
Upblast and hooded fans may be connected directly to ductwork
which will prevent contact with the internal moving parts, but when
the inlet or outlet is exposed, a suitable guard should be installed.
Accordingly, roof openings for these units can be easily and neatly
fitted with framed safety guards.
Fans may be driven from the motor shaft or through a belt drive.
In every case where the bearing assembly, rotating shaft, sheaves or
belts are exposed, a suitable guard should be provided.
RECOMMENDED LUBRICANTS
MANUFACTURER
Chevron
Gulf
Imperial Oil
Shell
Sun Oil
Texaco
Gulf
Imperial Oil
Shell
Sun Oil
Texaco
PRODUCT NAME
SRI-2
Gulfcrown EP-1
Unirex EP-1
Alvania R-2
Sunaplex IEP
Regal AFB2
Gulfcrown EP-2
Unirex EP-2
Alvania R-3
Sun Prestige 42 grease
Regal AFB-2
TEMP. RANGE
Below
32°F. (0°C)
Range 32°F to
150°F (0°C to
66°C)