BREEZAIR EXVQ EVAPORATIVE COOLER INSTALLATION MANUAL
|
11
BELT TENSION
Belt tension is important!
If it is too tight there will be
excessive belt and bearing wear. If it is too loose there will be
belt slip, excessive belt wear and loss of cooler performance.
There are two adjuster bolts with locking nuts attached to the
motor mounting.
The tension should be adjusted so that the deflection on one
side of the belt is 5/8” to 13/16”.
To make the adjustment, loosen the locking nuts and screw the
bolts in or out as required to change the belt tension. Re-tighten
the locking nuts.
It is important to recheck the motor amps again after re-setting
the belt tension.
A = Motor
B = Deflection 5/8” - 13/16” (15-20mm) with
moderate finger pressure
C = Blower Housing
D = Fan Pulley
E = Belt Tension Adjustment Bolts
MOTOR LOW SPEED SETTING
ILL034-J
EXVQ coolers will function across a wide speed range. The
minimum speed has been factory set, and should not require
adjustment under normal circumstances. However, some
adjustment may be necessary to suit specific installations.
After you have set the motor amps and belt tension correctly,
check the speed variation of the cooler. When the control is
changed from maximum to minimum settings, there should be
an easily recognizable difference in fan speed.
If there is not, check the following:
•
That windows and doors are open. Rule of thumb is to have
2 times the area of the outlet grille open for exhaust in each
room.
If the above is correct then proceed as follows:
• Set the fan speed to minimum using the remote control, so
that only two bars are displayed on the remote control.
• Turn the minimum speed adjustment knob (“A”) clockwise
or anti-clockwise, until the belt is running at approximately
one revolution per second (this equates to a fan speed of
approximately 600 rpm).
Correct belt tension ensures the belt will not slip. Check the
temperature of the belt by hand after each adjustment, by
turning off the cooler and holding one side of the belt in your
hand. If the belt is warm to touch, it is slipping!
Continue to tighten until it runs cool.
ILL1013-D
ON
ILL3386-A
A
+ -
ILL3386-A
INSTALLATION
