Using Nom 4; Maintenance; Service Instructions; Cleaning The Pre-Filter - Nederman NOM 4 Manual De Instrucciones

EN WARNING! Risk of electric shock
All electrical work must be done by a qualified
electrician according to local regulations.
5 Using NOM 4
1 Start the fan unit and ensure that the impeller ro-
tation is correct. Refer to the rotation sticker on
the fan motor. If the impeller rotation is incorrect,
change two phases (makes no difference which)
with each other (should be done by a qualified
electrician).
2 Ensure that the filter cartridges are not damaged.
3 Open the damper approximately 1/3 from closed
position (marked 60°), or if a pressure gauge is in-
stalled, act according to the following steps:
• Loosen the lower hose to the pressure gauge.
• Turn the damper handle until the pressure
gauge shows 700 Pa.
• Remount the hose.
4 After some time in operation, open the damper if
needed.
6 Maintenance
Installation, repair and maintenance work is to be car-
ried out by qualified personnel using only original Ne-
derman spare parts. Contact your nearest authorized
distributor or Nederman for advice on technical ser-
vice.
WARNING! Risk of personal injury
Use necessary personal safety equipment
when servicing the filter unit, especially when
cleaning or replacing the filter cartridges.
6.1 Service instructions
See Figure 3.
If the damper is fully open and the airflow through the
filter is still too low, it is necessary to clean and/or re-
place the filters.
If a pressure gauge (accessory) is installed, take meas-
ures according to the following description:
• The pre-filter should be cleaned when the pressure
on the gauge is 600 Pa. If the pressure still is 600 Pa
when the pre-filter has been cleaned the HEPA-fil-
ter should be changed
WARNING! Risk of personal injury
Switch off the fan.
1 Switch off the fan.
2 Loosen the eccentric locks on the top cover.
3 Remove the top cover.
4 Use the quick coupling to loosen the main cable
from the motor.
5 Take out the fan.
12
NOM 4
6 Clean the pre-filter and, if necessary, change the
HEPA-filter, see Figure 3A.
6.1.1 Cleaning the pre-filter
Wash from above with water-based degreasing. Max-
imum 60 °C. No high washing pressure. For example a
chamber washer 5–6 times/filter. Let the filter dry be-
fore it is replaced.
6.1.2 Cleaning the drain pipe
Wallmounted filter unit
When small metal particles contaminate the oil reser-
voir it is necessary to ensure that the drain pipe does
not become clogged.
7 Spare Parts
CAUTION! Risk of equipment damage
Use only Nederman original spare parts and ac-
cessories.
Contact your nearest authorized distributor or
Nederman for advice on technical service or
if you require help with spare parts. See also
www.nederman.com.
7.1 Ordering spare parts
When ordering spare parts always state the following:
• The part number and control number (see the
product identification plate).
• Detail number and name of the spare part (see
www.nederman.com/en/service/spare-part-
search).
• Quantity of the parts required.
8 Recycling
The product has been designed for component mater-
ials to be recycled. Different material types must be
handled according to relevant local regulations. Con-
tact the distributor or Nederman if uncertainties arise
when scrapping the product at the end of its service
life.