Vortice VORT QBK Notice D'emploi Et D'entretien page 18

ENGLISH
Records must be kept of these 90-day checks and
must show the outcome of the tests carried out.
Motor, fan and trasmission
The motor and fan bearings are sealed units and need
no lubrication.
Only a few large fans are mounted on bearings that
are fitted with grease nipples. Such bearings need to
be lubricated once a year with lithium grease using the
following procedure:
1. to avoid introducing dirt into the system, carefully
clean the grease nipple before connecting the
grease gun;
2. use moderate pressure to feed grease into the
system but make absolutely certain that none
escapes from the seal;
3. rotate the fan blades for a few seconds.
Every 30 days, check the drive belts for wear and tear
and test the tension as follows:
1. Remove the protective cover;
2. Measure the length of the free section of belt "D"
(Fig. 12);
3. Apply a force of "F" to the middle of the belt. This
reading is given in the table in Fig. 12 as part of the
section regarding the drive belt fitted (see
"Technical Sheet");
12 12
Drive belt Minimum force F
section
A 7 (0.7)
B 16 (1.6)
C 29 (2.9)
D 57 (5.7)
4. measure the arrow "C" in the middle of the free
section that should be 1.5 mm for every 100mm of
length "D" ( C = 1.5 x D/100);
5. if "C" is less (belt too tight) adjust using screw "A"
(see Fig. 12) bringing the motor closer to the fan, if
"C" is more (belt too slack) use screw "A" to adjust
it by increasing the distance between the motor and
the fan;
6. when force "F" and arrow "C" are as they should be,
replace the protective cover on the drive system
and tighten up all the screws.
If the belt slips for a second or two due to torque, this
18
Maximum force F
N(Kg) N(Kg)
10 (1)
24 (2.4)
47.5 (4.75)
86 (8.6)
is completely normal. Correct belt tension is important
for preventing early wear (slack belt) or overload on
the motor
(belt too tight).
13 13
SCREW
A
To avoid down time, replace the drive belts at least
once a year before they become overworn.
The job of replacing a belt is very similar to that
described above for adjusting one bearing in mind
that:
1. for replacement, you need to undo screw "A" until
you can completely remove the belts from their
positions;
2. the tension of the new belts must be set using a
force F1 = F x 1,3;
3. after running the appliance for 60-120 minutes,
recheck the tension and set it to the value shown in
table in Fig 12.
Air filter
As the cleaning and replacing of the air filter depends
upon the conditions under which the appliance is
operating, check the filter once a fortnight. Clean or
replace the filter every 60 days.
Warning: Failing to clean or replace filters has a
significant effect on the efficiency of the system with:
• increased loss of load in the air circulation system
and reduced air flow;
• subsequent drop in system performance and in
comfort levels.
Precautions to take if mothballing the appliance
If the appliance is to be out of operation for a lengthy
period, some simple precautions should be taken:
• Disconnect the appliance from the mains leaving a
note to this effect;
• If the appliance has a filter, remove it and store it in
a sealed container.
• Every 30 days or so, rotate the motor and fan for a
few seconds to prevent any damage to the bearings.
and fan bearings