8
RD.. and VD.. – Roof Fans
Installation and Operating Instructions
UK
4.3 Spare parts
Only original Helios spare parts are to be used. All repairs may only be carried out by authorised specialist
personnel/companies.
4.4 Standstill and disposal
WARNING
When dismantling, live parts can be exposed, which can result in electric shock if touched. Before dismant-
ling, isolate the unit from the mains power supply and protect against being switching on again!
The generally applicable safety at work and accident prevention regulations must be observed!
– Electrical work must only be carried out by an authorised electrician
– Fully isolate electrical connection from mains power supply
– Use appropriate lifting equipment and fastening devices to dismantle the fan
– Observe the instructions in the electric motor maintenance manual for decommissioning the motor
– Dispose of the fan components according to the valid rules and laws
5.0 Technical data
The product-specific technical data can be found on the type plate. The individual data is described below using an
example.
Character key Type plate Fan:
q
Manufacturer's address
y
Nominal current
w
Fan mark:
u
recorded nominal power
CE
= CE mark
i
max. ambient, transport media temp. at nominal operation
e
Version:
o
Nominal speed
VDW
= type designation; alternating current
a
Protection category / motor insulation class / capacitor
200
= size
s
Weight
/2
= pole
r
Article number / Production code
t
Nominal voltage / frequency
Error/Fault
Causes
Solution
Abnormal noises
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Grinding impeller
Clean, replace if necessary
Grinding impeller
Replace bearing
Mechanical damage
Carry out maintenance
Incorrect direction of rotation
Check, modify connection
Power consumption too
high
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Grinding impeller
Clean, replace if necessary
Bearing damage
Replace bearing
Fan does not perform
(speed)
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Incorrect voltage
modify
Defective capacitor
Check/replace capacitor
Bearing damage
Replace bearing
Contamination
Clean
Insufficient backflow
Widen backflow openings
Incorrect direction of rotation
modify
WARNING
nm
CHAPTER 5
TECHNICAL DATA
Fig.3
q
w
u
i
o
a
e
y
r
t
s
