Idiomas disponibles
Idiomas disponibles
GB
Contents
1.
Use
2.
General information
3.
Technical Data
4.
Scope of delivery
5.
Assembly
6.
Electrical connections
7.
Cooling water connection
8.
Condensation water
9.
Cooling and Adjusting
10. Temperature monitoring
11. Maintenance
12. Safety Notes
13. Warranty
14. Water Quality Notes
15. Dismantling and disposal
1. Use
•
The Pfannenberg air/water heat
exchanger is intended to dissipate
heat loss from switch cabinets.
Thermally sensitive components are
thus protected against damage.
• These devices are designed to dissipate
heat from sealed switch cabinets and
housings.
• The temperature of the cooling liquid
supplied to the air/water heat exchanger
must be at least 10 K colder than the
heat
exchanger
temperature in order to ensure the
cooling function.
2.
General information
• All devices are checked for leaks at
the works.
• We recommend installing a door contact
switch to turn the device off when the
switch cabinet door is opened.
3. Technical Data
• Overview of all Technical Data
(Technical sheet)
4. Scope of delivery
• Scope of delivery
(Technical sheet)
5. Assembly
• Illustrations and detailed
description
(Technical sheet)
(Sectional and drilling template)
• Insert cutouts in the switch cabinet
depending on device type and
ambient operating conditions.
Please use the „Sectional and
drilling template" supplied with the
device for this purpose.
Note: Ensure no swarf gets into the
switch cabinet.
• Install seals
Please use the sealant material
supplied.
• Secure the device in place
1.
Please use the fixtures and
fittings supplied for this.
785408467
6.
Electrical connections
• Power connection (external) and
wiring diagram (internal) (Technical
sheet)
(Wiring diagram on device)
Power connection is to the connection
terminal strip (X1) of the device.
Note: The fan starts as soon as it is
connected to the power supply.
• Mains
Connection voltage and frequency must
correspond to the rated values given
on the type plate.
Use the fusing specified on the type
plate for power protection.
• Temperature monitor (alarm)
Connection voltage max. 250V DC
Wiring and repairs may only be carried
out by authorised personnel.
7. Cooling water connection
• Use flexible pressure-resistant (>10
bar) hosing for the cooling water
connection and secure properly with
clamps.
• Observe flow direction (notices on the
device)
• Check for leaks
• Protect the water circuit against
contamination and excessive
pressure (please refer to the „Water
Quality Notes" section. The
inlet
air
maximum permissible operating
pressure is 10 ba
8. Condensation water
• To drain off condensation water
mount a hose on the end of the pipe
projecting from the device.
• Secure this hose in place with
clamps.
• To ensure reliable drainage of
condensation water, please note the
following:
• The drain hosing may not be
kinked
• Hosing cross-section must not be
constricted in any way.
• The drainage hose must slope in
the right direction.
• To avoid excessive condensation
water amounts, please note the
following:
• Adjust the cooling water
temperature to the cooling
performance required
• Only use the device on sealed
switch cabinets and housings
• Set the desired temperature only
as low as is really necessary
(avoid it dropping below the
dewpoint)
9. Cooling and Adjusting
(if available)
• The fan runs permanently.
• The solenoid valve controls cooling
water flow according to the internal
temperature setting in the switch
cabinet.
• The desired internal temperature of
the switch cabinet is set using the
thermostat.
Works setting
35°C / 95°F
Adjustment range
46.4°F - max. 50°C / 122°F
• Switch cabinet internal temperature
> the desired value set using the
thermostat
Solenoid valve
open
Coolant
flows
• Switch cabinet internal temperature
< the desired value set using the
thermostat
Solenoid valve
shut
Coolant
does not flow
10.
Temperature monitoring
(not for roof mounted units PWD)
• If the internal temperature of the
switch cabinet deviates more than
10K from the desired value set
(works setting 35°C / 95°F) using the
thermostat then the zero potential
two-way switch is triggered.
• This switch is wired to the terminal
strip X1.
• Wiring diagram
(Technical sheet)
(Wiring diagram on device)
11. Maintenance
• Pfannenberg air/water heat
exchangers are maintenance-free.
• Use of a filter is essential if the
cooling water is contaminated.
Please refer to the „Water Quality
Notes" section.
• Check the condensation water
drainage equipment at regular
intervals.
12.
Safety Notes
• Condensation water drainage out of
the switch cabinet must be ensured
when the device is installed.
• To prevent frost damage the temperature
in the water circuit must not fall below
the minimum permissible water
temperature of +1°C anywhere in the
system.
• If the device
is
transported
at temperatures below
freezing the water circuit must be
completely emptied using compressed
air.
min. 8°C /
stored
or
