Cotes CR300 Quick guide

INSTALLATION AND INSTRUCTION MANUAL
FOR CR300 DEHUMIDIFIER.
PRODUCTION NUMBER :
STOCKNO. 100063
DOCUMENT NO.: 300-04E
PAGE CONTENTS :
1 1. Principle of operation
3 2. Applications
4 3. Dimensions, inlet- & outlet diagram
5 4. Technical data
7 5. Components diagram
8 6. Capacity diagram
7. Electric features :
9 7.1 Power and control circuit diagram
10 7.2 Wiring in el-box
11 7.3 Wiring in cabinet
12 7.4 Placing of components in el-box
13 7.5 Electric components
13 7.6 Indicator neon
14 7.7 Connection of hygrostat
14 7.8 Electric connection
14 8. Installation
16 9. Fan curves/external pressure
15 10. Start-up procedure
18 11. Maintenance
19 12. Trouble shooting
20 13. Service/repair
13.1 Safety instructions
13.2 Replacing of electric components in
the E-box.
13.3 Replacing of gear motor, reg.air fan,
thermostats ST3
13.4 Replacing of process. air fan.
13.5 Replacing of heating elements
13.6 Replacing of rotor, gaskets, drive-
belts
21 14. Sound data
22 15. Reg. Duct set, standard.(option).
28.02.03
C TES HB COTES A S
HB DEHUMIDIFICATION SYSTEMS
Postgiro: 466-0722
CVR-nr./VAT-no.: 15 20 03 32
Bank: Danske Bank
Caspar Brands Plads 9, 4220 Korsør
Konto/Acc: 3212 3212298972
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Internet: www.hbcotes.com
E-mail: [email protected]
Værkstedsvej
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Tel +
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4230
45 58 19 63 22
45 58 19 58 44

Page 1
The dehumidifier removes water from an airflow through, and
the removed water is carried away from the dehumidifier with
the regeneration air (henceforward called reg.-air).
Water adsorption and -extraction takes place in an rotor made
of water resistant silica gel.
The airflows in the dehumidifier divides the rotor in two
parts : drying part and reg.-part.
Two separate air flows passes through the rotor:
- the main air (moist air inlet) goes through the drying
part, and leaves the dehumidifier as dry air
- the reg.-air coming from the reg.-air fan, passing the
electric heater and leaves the heater with a temperature
of 135C. This warm reg.-air now goes through the reg.-
part and the energy is used for evaporation of the adsorp-
ed water. This water vapour now leaves the dehumidifier
within the reg.-air. (see principle fig.1, page 2 ).
The two air flows are fixed and the rotor turns - this gives
an automatic process of simultaneous water adsorption and wa-
ter extraction.
The inlet conditions of the air to be dried, determines how
much water the dehumidifier will remove.
On page 8 the capacity diagram shows how much water will be
removed per kg air going through.
(shown in the diagram)
- inlet air conditions 20C, 60 %RH, gives water content 8,7
g/kg
- the diagram shows then dry air condition of X= 3,2 g/kg
- removed per kg air is then: 8,7 - 3,2 = 5,5 g/kg
Dry air flow is nominal 300 m3/h = (x 1,2) = 360 kg/h
Capacity, removed water per hour = 360 x 5,5 = 1980 g/h
= 47 kg/24h
- at 400V.
The temperature of the dry air is higher than for the inlet
air. This is caused by the evaporation heat release and heat
gain from the rotor. The temperature is shown to be 42C.
1. PRINCIPLE OF OPERATION.
CAPACITY DIAGRAM, R618.
Example:
Capacity CR300 at this condition:

Page 3
Dehumidifiers in the CR range is used for dehumidification
of ambient air at normal atmospheric pressure. This can be
an installation for moisture control in an unheated store
room, in a water work building, production room for hygro-
scopic materials... - with the dehumidifier in a separate
installation.
The dehumidifier also can be used as a part of a bigger air
treatment system. Here the dehumidifier often will be placed
in a by-pass to the main system.
In this case the pressure in the main system will influence
the dehumidifier - and your supplier must be contacted, as
this can influence the capacity of the dehumidifier.
Normally the dehumidifier will be placed in a wall bracket
or in a frame placed on the floor. Both parts can be sup-
plied as options.
The air to the dehumidifier should be free from solvents or
other explosive components, and should be free from pollu-
tion from solid particles and chemical substances ( ex.
acids, bases...).
- max. humidity ...................... 100 %RH
- max. temperature ................... 35C
- max./min. pressure ................. ambient +/- 300Pa
2. APPLICATIONS.
For air to the dehumidifier the following limit values
must be respected :
The CR range is for indoor, stationary installations.
Should not be placed in rooms with possibility for free wa-
ter on the cabinet.

Page 5.
Dry air, free blowing ............ : 410 m3/h
Dry air, nominal ................. : 300 m3/h
Reg.air, nominal ................. : 90 m3/h
External pressure, process air ... : 240 Pa at 300 m3/h
External pressure, reg.air ....... : 70 Pa at 90 m3/h
(see fan curves, page 15)
Capacity at 20C, 60 %RH .......... : 1,90 kg/h (at 400V)
(see capacity diagram page 8)
Power consumption, electric heater : 3000W, 230/400V
Process air fan .................. : 210W, 230V
Reg.air fan ...................... : 80W, 230V
Motor for gear ................... : 5W, 230V
Power consumption, total ......... : 3300W, 400V
Voltage .......................... : 380-400V, 3N+PE
External fuses ................... : 10A
Rotor ............................ : SG Ø300/100
Rotations of rotor ............... : 20/rph
Gear for rotor ................... : Saia J1M
Drive belt ....................... : Ø8/1070
Belt pulley ...................... : SPZ63-1
L x B x H ........................ : 880x440x460 mm
Weight ........................... : 45 kg
4. TECHNICAL DATA, CR300.
FURTHER SPECIFICATIONS:
DIMENSIONS, WEIGHT:

Page 7
1 1 121860 Cabinet part, back plate, removable
2 1 123003 Frame for fan and filter
3 1 123009 Cover for filter, removable
4 1 121843 Cabinet part, top cover, removable
5 1 127004 Pulley, SPZ63-1
6 1 132101 Drive belt, Ø8/1050
7 1 110412 Gear, Saia J30S
8 1 110400 Motor for gear, M3
9 1 130010 Gasket, Ø100/80, silicone rubber.
10 1 121854 El-Box, mounted with
11 1 all electric components
12 1 121858 Cover for El-box, removable
13 3 111417 El spiral heaters E1...E3
14 1 121844 Electric heater box
15 1 121810 Connector for reg.air inlet
16 5 120151 Distance bolt Ø12
17 1 124058 Rotor Ø300/100
18 1 121128 Connector for reg.air outlet
19 1 121841 Cabinet
20 1 130501 Flexible hose, Triapur P2PU Ø80
21 4 132004 Rubber "feets" ø30x15
22 1 120711 Reg.air outlet Ø80
23 1 123012 Reg.air inlet Ø80
24 1 130217 Filter cassette, 180x180x48, Reg.air
25 1 111773 Fan, reg. air, M2
26 1 130501 Flexible hose, Triapur P2PU Ø80
27 1 121842 Cabinet part, front cover, fixed
28 1 120713 dry air outlet, Ø125
29 1 121861 Dividing plate, for, fixed
30 2 131001 Teflon ring, Ø306
31 2 130100 Rubber profile for teflon ring
32 1 120150 Shaft for rotor
33 1 121172 Dividing plate, back, removable
34 2 131005 Teflon disc
35 1 111770 Fan, process air M1
36 1 130217 Filter cassette, 180x180x48, Process air
37 1 123011 Cover for process air
5. COMPONENTS LIST CR300.
(Ref to drawing no. R2141)
POS PCS ITEM NO. DESCRIPTION

Page 13
R2195 ... : Power and control circuit
R2196 ... : Wiring in the el-box
R2197 ... : Wiring in the dehumidifier
R2198 ... : Placing of components in the el-box
SA1 110215 : Selector switch, Sälzer P220-61025E219M1
KA1/ 111833 : Relay, Finder 60.13, 11P, 230V, 10A (AC1)
KA2 111834 : Socket ZB11
FS1 112011 : Fuse for supply circuit, glass, Ø6/20, 5A
HL1 110231 : Green neon, indication for electric power - on.
HL2 110232 : Yellow neon, indication for ST1 closed
M3 110400 : Motor for gear, Saia UFR40, 230V, 5VA
110430 Capacitor 0,22 MYF
110412 Gear, Saia J30S
M1 111771 : Main air fan, 230V, 210W, Ruck GE160-2A
111623 Capacitor 6 MYF
M2 111773 : Reg.-Air fan, GE120-2b, 230V, 84W
111620 Capacitor 1.5 MYF
ST1 111201 : Thermostat with manual reset, 3-Pol., 176C,
ST2 111202 : Thermostat, EGO 50-300C, set for 145C
ST3 111204 : Thermostat, EGO 30-110C/12K, set for 60C
(controlling the reg.fan and rotor)
E1/ 111406 : Heating element, 220V, 700W - Cotes.
E4.
P1 112302 : Power lin filter type 20AY01
P2 112305 : Hour counter, for DIN-rail, 230V/50
indicates when illuminated that power
is on. This neon should therefore always be illuminated.
indicates when illuminated that the
thermostat with manual reset, ST1, is closed and should
always be illuminated. If not, push the red button on ST1
for reset.
In general both neons should be illuminated during operation.
7.5 ELECTRIC COMPONENTS CR300.
7.6 INDICATOR NEON.
Refers to el-diagrams:
The neon HL1 (green)
The neon HL2 (yellow)

Page 14
The dehumidifier is prepared for external regulation by a
hygrostat. Therefore terminals for this connection is pla-
ced into the el-box. The terminals are 12 & 13.
In the el-box the terminals for power connection is placed
too (U,N,PE). If electronic hygrostat is used, the power
supply can be taken from the terminals U,N.
The terminals 12 & 13 are shunted at delivery. This shunt
is to be removed and the terminals for the hygrostat
connected.
when a connected hygrostat breaks, the reg.-air fan
will continue operating for further 5 minutes for coo-
ling the heating elements, and for finishing the reg.-
process, controlled by thermostat ST3 (60C).
The dehumidifier CR300 is connected 400V, 3N+PE. Connection
to the terminals U,V,W,N,PE, placed into the el-box be-
hind the cover on the cabinet front plate.
For connection of an external hygrostat, 230V, extra ter-
minals U,N is placed in the box.
Power consumption is 3,3 KW - external fuses must be 10A.
The internal fuse 5A is also placed in the box in the ter-
minal block.
The dehumidifier should be installed indoors, placed on a
wall bracket or some other horizontal basis. It should be
placed on the four off supports underneath the cabinet.
For service/repair the dehumidifier should be placed about
1,5 m above the ground - and have a free space of 1m around
and over the cabinet.
8.1 The reg.-air is taken from the outside of the room, and
the reg.-air outlet should lead back to the outside.
Therefore the dehumidifier is placed on an outer wall
through which these connections are possible.
Size of ducts is Ø80 mm.
should be fitted with damper.
should be made draining against the
outlet, to allow condensate to run free. If this is not
possible, drill an Ø4 hole on the lowest part of the
duct for drain.
Standard reg.-duct system can be supplied as an option.
8.2 Dry air outlet can be connected Ø125mm ducts.
8.3 If ducts is needed for inlet main air, Ø125 ducts can
be connected. At delivery the dehumidifier then should
be supplied with a Ø200 connection + reduction 200/125.
7.7 REGULATION BY HYGROSTAT.
7.8 ELECTRIC CONNECTION.
8. INSTALLATION.
NB:
A circuit breaker according to EN60947-3 (AC-23B) must be
placed close to the dehumidifier.
ee fig. 2, page 2).
Reg.-air inlet
Reg.-air outlet
(S
CONNECTION OF DUCTS :

Page 15
8.4 Process air is normally taken from the room, through
the process filter on the backside of the dehumidifier.
The filter cassette can be replaced by opening the cover
on top of the dehumidifier, and can therefore be replaced
without removing the duct system.
In general ducts of the same size as the connections on the
dehumidifier should be used - or bigger to meet the actual
pressure loss.
If the dehumidifier should be connected to another air
treatment system, the air pressure of this system will
influence the dehumidifier. You should then contact
your supplier before installation for advice.
NB :
(page 16)9. Fan performance curves.

Page 17
Before starting-up the dehumidifier, check that all
electric connections are made correctly.
If this is OK, turn the selector switch to the position
you want:
"MAN" = continuos operation
"AUTO" = automatic operation
"0" = switched off
The position "AUTO" is to be used when operated by an
external hygrostat or other external control equipment.
Pos "AUTO":
If it does not start-up, it can be caused by the hygro-
stat. If the actual %RH is lower than wanted, the humi-
distat is broken.
This can be checked like this:
- adjust the hygrostat to 20 %RH, and the dehumidifier
should then be operating
- adjust the hygrostat to 90 %RH, and the dehumidifier
should stop operating.
Air flows should be adjusted.
The dry air flow should be adjusted for the nominal 300
m3/h for obtaining data from the capacity diagram.
If the installation is normal dehumidification of a
room for 40 - 70 %RF it is acceptable that the dehumi-
fier is free blowing (without adjustment).
If lower dew points are wanted, you need to adjust the
dry air flow.
Reg.-air flow always has to be adjusted for the nominal
90 m3/h. The damper installed in the reg.-inlet duct
system is for this purpose.
If standard reg.-duct set is used, the reg.- air flow is
correct when the damper is adjusted for 15 DG closed.
With the electrical settings and air flows adjusted, the
dehumidifier will then operate automatically by means of
the internal control- and safety functions - controlled
by an external hygrostat.
10. Commisioning CR300
10.1 Electric.
10.2 Air flows.

Page 18
Dehumidifier CR300 only needs a minimum of maintenance.
All components are service free, which means no lubrication
or adjustment.
Only three things should be checked during normal operati-
on:
- air filters should be replaced at least every 3 months *)
- the rotation of the rotor should be checked once a
month.
- the reg.-temperature during operation should be checked
once a month (reg.outlet 30-60C, depending on inlet cond.)
*) Filter for process air:
use our standard filter cassette 180x180x48mm. For easy
replacing do like this:
- unscrew the cover on top of the dehumidifier, and pull
the filter out.
If the rotor rotates during operation, and the reg.-tempera-
ture is 145C at 25C inlet - you can be almost sure that the
dehumidifier is operating at an optimum.
We nevertheless recommend some periodic verification of
the entire dehumidifier, to see if all internal functions
are ok and checking of gaskets and moving parts for wear
and tear.
This will ensure that the capacity is on its maximum, and
thus won`t waste any energy.
11. MAINTENANCE.
Rotation of the rotor can be checked through the hole in
the cabinet plate when the grey rubber plug is removed.
The rotor should then turn downwards.

Page 19
12.1 If the green neon is not illuminated, electricity sup-
ply could be cut-off to the dehumidifier. Check the
external fuses for the dehumidifier, and check the
internal fuse FS1, 5A.
It could also be the neon which has to be changed.
12.2 If the yellow neon (HL2) is not illuminated even when
the green neon (HL1) is illuminated the thermostat
ST1 might have broken. Push the button on ST1 for reset-
ting the thermostat (placed close to the neons).
12.3 If the dehumidifier is not operating even if the green
and the yellow neon is on, it is probably the external
hygrostat which has broken. This is a normal situation
when the desired humidity is obtained.
To check : adjust the hygrostat for 20 %RH, and the
dehumidifier should start operating. Adjust again for
the desired humidity.
Also check the selector switch, for operation the po-
sition must be "AUTO" or "MAN".
12.4 If the desired humidity is not obtained, the problem
can be the dehumidifier - or the other parts in the
total installation ( room tightness, hygrostat...).
To verify this, check:
- rotation of rotor ?
- the dry air should be 15-20C warmer than the inlet
main air. If it is cold it could indicate that the
rotor is not turning caused by broken drive belts or
the motor has stopped.
- by hand feel the surface temperature of the reg. out-
let duct. For correct operation the temperature
should be 40-60C. If it is cold, the thermostatic
switch might have broken. Manual reset on the red
button placed close to the green neon on the cabinet.
If it is very hot it indicates that the rotor has
stopped.
12. TROUBLE SHOOTING.