HHCompact Air Handling Units
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•
Avoid unnecessary stops and rapid start-ups of the fan.
6.14.3 - Transmission
After starting up the unit and after replacing the belts, the
belt tension must be checked within one week and then
after two weeks, and further tensioned if required. After
that check the belt tension and inspect the condition of
the belts every three months.
The CORRECT BELT TENSION depends on:
•
the belt type;
•
number of belts,
•
smallest pulley diameter,
•
power to be transmitted;
•
belt velocity.
The belt tension is calculated for each transmission. If the
belt tension is too high this can result in bearing wear and
vibration, if it is too low this can result in belt slippage and
pulley and belt wear.
Sequence for installation of new belts:
•
Ensure that the pulleys are correctly aligned. If
necessary re-align.
•
Position all belts loosely on the pulleys, do not pull
tensioned belts over the pulleys.
•
Tension the belts and check the tension with a Sonic
Tension Meter.
•
Re-check the alignment.
If the fan speed changes or if a motor with different
power specifications and/or speed is installed, this must
be discussed in advance with the manufacturer.
The supplier must re-calculate the bearing load as well as
the impeller load. If this is not done, irreparable damage
to the fan may occur. The supplier does not accept
any responsibility for modifications that have not been
approved. See chapter 1.1.
After changing the motor, transmission or frequency
converter settings:
•
Check the fan rotation direction.
•
Check the power input.
CAUTION: While working on the fan the switch has to be
locked open.
The warning pictograms on rotating parts, electrical
voltage and opening doors are attached to the door.
! Waarschuwing !
Voor openen deuren, ventilator
uitschakelen, spanningsloos
maken en uit laten lopen
(minimaal 2 minuten).
Transportbeugels
Verwijder transportbeugels voor
opstarten ventilator.
! Warning !
Before opening the doors, switch
off and deenergise the fan and
allow it to run down
(minium 2 minutes)
Transport brackets
Remove transport brackets before
starting up the fan.
! Attention !
Avant ouverture des portes, le
ventilateur doit être déconnecté
et avoir eu le temps, de s’arrêter
completement
(2 minutes minimum)
Fixations de transport
Retirer les fixations de trans-port
avant la mise en route.
! Gefahr !
Vor Öffnen der Türen den
Ventilator abschalten, span-
nungslos machen und zum
Stillstand kommen lassen
(mindestens 2 Minuten warten).
Transportsicherungen
Transportsicherungen vor der
Inbetriebnahme demontieren.
200034906
WARNING: Remember to deenergise all components and
to ensure that the fan has stopped rotating, before the
doors and access covers are opened before inspections
and maintenance take place.
6.15 - Silencers
It is recommended to check the splitters of the silencers
periodically for possible damage and loosening of the
fibres, to prevent dirt deposits in the system.
6.16 - Control
The control must be checked daily for fault messages
and alarms. These must be corrected immediately. After
correcting the cause for a fault message or alarm, the AHU
can be restarted with the reset button on the control
panel.
Once a year check if the position of the control device
agrees with the specified controller setting.