Maintenance - Rittal SK 3212-Serie Montageanleitung

English
Contents
1. Application
2. Technical data
3. Assembly
4. Electrical connection
5. Cooling water connection
6. Refrigeration and control behaviour
7. Leaks and temperature monitoring

8. Maintenance

9. Scope of supply and warranty
10. Notes on discharge of condensate
11. Safety instructions
12. Notes on water quality
13. Spares list
1. Application
Air/water heat exchangers are designed and
built to dissipate heat from enclosures, by cool-
ing the air inside the enclosure and protecting
temperature sensitive components. Air/water
heat exchangers are particularly suitable for the
temperature range of +40°C to +70°C, where for
system related reasons, comparable units such
as air/air heat exchangers, enclosure cooling
units or fan units with filters cannot be used to
dissipate heat effectively and economically.
2. Technical data
(see table 2.1).
3. Assembly
Please use the enclosed drilling template to cut
out the component apertures.
3.1 SK 3247.000
The unit can be mounted
a) on the enclosure
see fig. on page 30
b) inside the enclosure
see fig. on page 30
Cut the enclosed seal to length and stick to the
appliance as shown in fig. 3.2, page 31.
3.2 SK 3219.100 / SK 3249.xxx
The unit should be mounted on the top cover
of the enclosure in accordance with fig. on
page 31.
3.3 SK 3212.230 / SK 3214.100 / SK 3215.100 /
SK 3216.xxx / SK 3217.100 / SK 3218.xxx
External installation of the unit (Fig. page 30):
➀
Screw the four fastening bolts , together with
➁ ➂
the washer and nut , to the mounting level
➃
of the enclosure. Push the heat exchanger
into position and secure with four screws
Internal installation of the unit (Fig. page 30):
➀
Insert four fastening bolts into the appliance
➆
from behind. Slide the fixing ring
fastening bolts as a mounting aid. Screw the
appliance, together with the washer
➂
, to the mounting level of the enclosure from
the outside. Push the protective cap
nut.
14
4. Electrical connection
The connection voltage and frequency must cor-
respond to the rated values quoted on the data
plate. The unit must be connected to the mains
via a disconnection device which ensures at least
3 mm contact opening in the deactivated state.
No additional temperature control must be con-
nected to the supply side of the unit. Line protec-
tion should be provided by means of the pre-fuse
specified on the name plate. Please observe the
relevant regulations when installing!
The mains connection is made at the connec-
tion terminal (see fig. on page 32).
5. Cooling water
connection
The cooling water connection must be made with
pressure resistant flexible hoses which should be
secured with clips.
(Note the direction of flow and check for
absence of leaks!)
The units have no separate air-bleed. With
pressure-sealed systems, corresponding air-
bleed facilities are to be installed on the water
side.
Protect the water circuit from contamination and
excess pressure (10 bar max.).
Please observe the relevant regulations when
installing!
6. Refrigeration and
control behaviour
The fan of the air circuit operates continuously,
thus ensuring an even temperature distribution
within the enclosure. A solenoid valve controls the
cooling water flow in accordance with the preset
temperature. Setting range +20°C to +60°C.
Presetting of the enclosure temperature is made,
6.1 for SK 3214.100 / SK 3215.100 /
SK 3216.xxx / SK 3217.100 / SK 3218.xxx
via the thermostat on the rear of the unit.
6.2 for SK 3247.000 at the setting knob of the
built-in thermostat. To do this, remove the
hood of the unit.
6.3 for SK 3219.100 / SK 3249.xxx at the
potentiometer P1 of the control board.
To do this, remove the hood of the unit and
the board cover.
6.4 SK 3212.xxx has no control unit.
7. Leaks and temperature
monitoring
7.1 Temperature monitoring
Should the temperature inside the enclosure rise
by more than
10 K in the models SK 3247.000 / SK 3214.100 /
➄
➅
. 7 K in the models SK 3219.100 / SK 3249.xxx
above the set-point value, then the potential-free
changeover contact will switch. This contact is
routed to the outside via a separate cable for
onto the
model SK 3247.000, via a separate plug for
model SK 3219.100 / SK 3249.xxx.
➁
and nut
For SK 3214.100 / SK 3215.100 / SK 3216.xxx /
SK 3217.100 / SK 3218.xxx the connection of
➇
onto the
the potential-free contact is made via the plug-in
terminal strip on the rear of the unit.
7.2 Leak monitoring
(only in the case of SK 3219.100 / SK 3249.xxx)
In the event of a leakage developing in the
SK 3219.100 / SK 3249.xxx, or a pipe fracture
occurring in the water circuit
a) the cooling water supply will be cut
off immediately,
b) the potential-free changeover contact will
be switched, and
c) the fan will be switched off.
SK 3215.100 / SK 3216.xxx /
SK 3217.100 / SK 3218.xxx
8. Maintenance
The air/water heat exchangers require no main-
tenance (see point 12.).
Check the function of the condensate draining
facility regularly.
9. Scope of supply
and warranty
9.1 SK 3247.000 / SK 3212.xxx / SK 3214.100 /
SK 3215.100 / SK 3216.xxx / SK 3217.100 /
SK 3218.xxx
1 air/water heat exchanger, ready for connection
1 sealing tape
4 fastening bolts
(internal installation of unit 3247.000)
4 threaded pins M6 x 30
(internal installation of unit)
4 flat-headed screws M6*
4 fixing rings*
4 nuts M6
4 washers A 6.4
4 protective caps
1 set of assembly and operating instructions
1 drilling template
* Only for SK 3214.100 / SK 3215.100 /
SK 3216.xxx / SK 3217.100 / SK 3218.xxx
instead of the threaded pins.
9.2 SK 3219.100 / SK 3249.xxx
1 air/water heat exchanger, ready for connection
1 sealing plate
4 double-ended threaded bolts
4 nuts M6
4 serrated washers J 6.4
1 set of assembly and operating instructions
1 drilling template
1 angled hose fitting
1 threaded bush
2 connectors
1 eyebolt (SK 3219.100)
Guarantee:
This unit is covered by a 1-year guarantee from
the date of supply, subject to correct usage.
Within this period, the returned unit will be
repaired in the factory or replaced free of charge.
The unit is to be used for the cooling of enclosures
only. If it is connected or handled improperly the
manufacturer's guarantee does not apply and in
this case we are not liable for any damage
caused.