Triangle Engineering of Arkansas TP HIGH VELOCITY FANS - Manual (Page 2)

START-UP AND OPERATION
Careful inspection should be made before start-up. All
fasteners should be securely tightened. Impeller should be
rotated by hand to insure free movement. (NOTE: Before
placing hand on propeller, lock out primary and secondary
power source). Check all set-screws and keys. Tighten
where necessary.
WARNING - The fan has been checked at the factory
prior to shipment for mechanical noises. If mechanical noise
should develop, then some suggestions are offered here as
a guide toward remedying the cause.
1. Check rotating members for adequate clearance.
3. Check installation and anchoring.
4. Check motor bearings.
The fan guards should be free from obstructions. To
assure maximum air movement an adequate supply air must
be available.
Power lines compatible with the motor requirements
are brought up from an electrical source to the unit. A
generous amount of slack in power lines should be provided
to allow for motor deflections. Motor must be securely
and adequately grounded. Protect power lines from sharp
objects. Do not kink power line or permit it to contact hot
surfaces, chemicals, grease or oil.
Before putting any fan into operation, the following check
list should also be completed:
a. Lock out primary and secondary power source.
b. Make sure installation is in accordance with manufac-
turer’s instructions.
c. Check and tighten all fasteners.
d. Spin propeller to see if rotation is free and does not
bind or rub.
e. Check all set-screws and keys and tighten if neces-
sary.
f. Make sure there is no foreign loose material in fan
guards or propeller.
g. Properly secure all safety guards.
h. Check line voltage with motor nameplate.
i. Check wiring. (NOTE: On single phase motors, the
terminal block must be set up in accordance with
the nameplate instructions and/or wiring diagram.
The set-up must match the line voltage. If the motor
is 3 phase, the winding leads must be grouped and
connected as shown on the wiring diagram. The line
voltage must correspond with proper grouping of
motor leads. On 2-speed motors the wiring diagram
must be followed precisely or serious motor damage
will occur.)
Switch on electrical supply and allow fan to reach full
speed. If heater elements are tripping out the starters, the
following items should be investigated:
Is the heater element the correct size for the motor?
Is the starter located in a high ambient temperature?
Is the propeller rotating in the correct direction?
Is the line voltage excessively low?
Is the motor wired properly to suit the line voltage?
Check carefully for:
1. Correct rotation of the propeller. (NOTE: Incorrect rota-
tion overloads motor severely and results in serious
motor damage. To change rotation of 3 phase units,
simply interchange any two of the three line leads. On
single phase units, change the terminal block set-up
following the wiring diagram.)
2. Check motor and bearing temperatures so that they
are not excessively hot. (NOTE: Use care when touch-
ing the exterior of an operating motor. Modern motors
normally run hot. They are designed to operate at higher
temperatures. This is a normal condition, but they may
be hot enough to be painful or injurious to the touch.) If
any problem is indicated, SWITCH OFF IMMEDIATELY,
Lock out the electrical supply and check carefully for
the cause of the trouble and correct as needed. Even if
the fan appears to be operating satisfactorily, shut down
after a brief period and check all fasteners, set-screws
and keys for tightness.
The fan may now be put into operation but during the
first eight (8) hours of running it should be periodically
observed and checked for excessive vibration or noise. At
this time checks should be made on motor input current
and motor bearing temperatures to insure they do not
exceed manufacturer’s recommendations. After eight hours
of satisfactory operation, the fan should be shut down and
the electrical power locked out to check the following items
and adjust if necessary:
a. All set-screws, keys and fasteners.
b. Drive coupling alignment.
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 fol-
lowed.
• All motors are checked prior to shipment; however,
if motor defects should develop, prompt service can
be obtained from the nearest authorized service sta-