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have been followed and all necessary inspections have
been carried out.
4.2. START UP
• Consider the following table for reference on the ope-
ning and closing times of the HATCH, for each size.
There may be slight differences on site due to ambient
conditions. The detailed values for the fan represent
the time delay between the HATCH starting to open and
the fan starting.
Size
Model
Open
Quick
Normal
(s)
500
1
560
35
630
710
2
40
800
900
3
45
1000
1120
4
60
1250
• Activate HATCH cover mechanism and leave it in the
"open" position.
• Start the fan motor briefl y and switch it off. Check that
the impeller and airfl ow direction is correct. In case it
is not, switch a phase of the electrical connection.
• Once the rotation is correct, start the fan again and
check current does not exceed fan equipment name-
plate data. Check also for any abnormal noises and/
or vibrations.
• After two hours of operation, check that all fi xings and
supports/bases are tight and adjust if necessary.
• Set up the fan starting according to the values defi ned
in the previous table, depending on the scenario (venti-
lation/fi re emergency).
• Return the HATCH cover to its "closed" position.
5. MAINTENANCE
Maintenance/repairs must be carried out by competent
personnel and in accordance with applicable Internatio-
nal, National and Local regulations. The unit should be
electrically isolated before any work is started.
Fan equipment should be regularly cleaned, frequen-
cy depending upon service load and application, but no
less than every 6 months. Units installed in dusty envi-
ronments may require more frequent cleaning to ensure
safe operation. Cleaning should include all areas where
dust can accumulate in the fan equipment.
Special attention should be made to any unusual sounds,
vibration or temperature. If any problems are detected
the unit should be stopped immediately and cause ins-
pected. The impeller and blades should be regularly
checked.
Close
Fan delay
(s)
Quick
Normal
(s)
(s)
(s)
85
90
20
50
100
105
24
60
115
120
30
70
140
145
36
85
Attention should be paid to the state of the silicone at the
corners of the profi les. It must be renewed if sginfi cant
deterioration is observed.
Typical checks would be:
• Typical one (1) month check:
− Correct HATCH cover open/close motions.
− Motor bearings are suffi ciently lubricated, all fi xings
tight, especially impeller locking bolts, support fi -
xings and motor assembly.
− Safety guards are correctly affi xed.
− All rotating parts have free unobstructed movement.
− No debris or foreign bodies inside fan or can be
drawn into fan.
− Fan equipment is clean inside and outside casing.
− Dedicated Emergency Ventilation Fans should be run
minimum for 15 minutes.
• Typical three (3) month check:
− Electrical earth connection tight and safe.
− All fi xings are secure.
− Analyse fan / motor vibration and compare with past
readings, if required, in accordance with instructions.
− Re-lubrication, if required, in accordance with ins-
tructions.
− Emergency Ventilation fan systems should be run
and checked.
Re-lubrication of motor bearings, where applicable,
should be carried out in accordance with specifi c mo-
tor Instructions. Warning; do not mix different types of
grease.
Vibration sensing, or regular analysis of vibration levels,
provides an early indication of potential wear, unbalan-
ce, or early warning of breakdown. Readings should be
taken at bearing, 90° to shaft center line, on a clean fl at
secure surface. If access to motor is not possible (mo-
tor in airstream) then a suitable external location may be
identifi ed for comparison.
The basic principle of condition monitoring is to monitor
a suitable measurement, so that any upward trend can be
detected and taken as an indication that a problem exists.
Thus it is important to:
A. Identify initial installed vibration level.
B. Select vibration measuring points.
C. Determine the interval for measurements.
D. Establish data recording system.
E. Establish criteria for assessing condition of fan.
Guidance to vibration action levels may be found in ISO
14694 Industrial fans – Specifi cations for balance quality
and vibration levels.
Regarding repairs and spare parts, contact your local
S&P distributor.
6. PUTTING OUT OF SERVICE AND RECYCLING
Disposal must be carried out by competent personnel
and in accordance with applicable International, National
and Local regulations.
Isolate unit equipment and any associated electrical
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