FläktGroup ECONOVENT PUMZ-20 Installation guide
- Type
- Installation guide
INSTRUCTION FOR SPEED DETECTOR
ROTARY HEAT EXCHANGER
PUMZ -20
2
Mounting- and Electrical Installation
FläktGroup DC_4498GB 20180419_R0 Specifications are subject to change without further notice
DELIVERY
If the heat exchanger has been ordered with a speed detector,
the parts shown in Fig.3 will be fitted at the factory.
The alarm relay shown in Fig. 1 is delivered separately.
PUMZ-20-2-1 alarm relay
For constant speed only.
PUMZ-20-b-c magnet and speed sensor
The delivery includes an angle bracket, screws for the bracket
and the magnets.
FITTING
(applicable when the speed detector is ordered afterwards)
A. Fit the magnet(s) included in the delivery to the rim plates of
the rotor. On the larger sizes, locate the 2 magnets 5 mm
apart, in line along the periphery of the rotor, see Fig. 3.
Fitting sequence: Remove the lower inspection cover, turn
the rotor which has the largest radial run-out. Secure the
magnet in position adjacent o the right-hand clamping strap.
Ensure that magnetic pulse sensor GS2 is well clear of the
clamping strap joints.
B. Fit the impulse sensor to the mounting bracket and locate
the bracket to the casing partition (see Fig. 4). Locate the
mounting bracket so that the distance between the sensor
and the magnet will not exceed 3-5 mm (see Fig. 3). Secure
the mounting bracket in the cross piece by means of two
self-threading screws.
C. Now check the distance between the pulse sensor and the
magnet(s) (up to 3-5 mm). Adjust if necessary.
PUMZ-20 SPEED DETECTOR
Fig. 2
Fig. 4
Fig. 3
Fig. 1
Alarm indicating
lamp (lights up
in the event of
an alarm
PUMZ-20
alarm relay
Test/operation
selector switch.
Alarm delay of
20 s/180 s
Operation indicating
lamp (extinguished
when the magnet is
in line with the sen-
sor)
Relay base
EURZ 3
ø15
60
70
15
GS1 Impulse sensor
Magnet(s)
Important!
Units up to and including size 240 have only
one magnet where as the larger sizes have
two magnets.
5 mm
max. 3 mm
EURZ 2
EURZ 4
Brusch seal
Magnet(s)
Mounting
bracket
max 3-5 mm
3
Mounting- and Electrical Installation
FläktGroup DC_4498GB 20180419_R0 Specifications are subject to change without further notice
ELECTRICAL INSTALLATION AND OPERATION
(the electrical installation work should be carried out by an
authorized electrician)
Constant speed - relay
A alarm will be initiated if the time between two pulses is longer
than 3 min. (even if the magnet has stopped opposite the pulse
sensor). The alarm will be interlocked if the logic input of the
relay is closed.
The alarm will be reset automatically when the time between
pulses has decreased to less than 3 min.
Alarm relay with operation indicating lamp (green), alarm lamp
(red) and one pair of potential-free change-over contacts. The
relay is mounted on a base. The contact rating for a resistive
load is 5 A at 220 V.
Activation pulse duration: at least 0.02 s.
Alarm outputs:
1–4 circuit closed
A) When the relay is energized (< 3 min. between pulses)
B) If the logic input is closed
C) After the power supply has been switched on (3 min.) 1–3
circuit closed
A) In the event of an alarm (> 3 min. between pulses)
B) On a loss in power supply
Auxiliary contacts in the drive motor contactor, which interlock
the alarm when the heat exchanger is not running. Alternative
connection of the same control signal as that used for the speed
controller (a control signal below 4 V interlocks the alarm).
GS1 Impulse sensor
Max. sensing distance: 3-5 mm, see below. Max. avkännings-
avstånd: 3-5 mm, se fig. nedan.
EXAMPLE OF ALARM INTERLOCK CONNECTION
The alarm is interlocked across the auxiliary contacts of the
drive motor contactor.
Variable speed
AS2 Control unit (EMS)
Magnetic speed sensor
X3 Terminal blocks in the control unit
X7 Alarm connection. The contacts are potential-free and
close when an alarm is initiated and when the power
supply is lost. Contact rating: 5 A at 30 V.
Fit the pulse sensor and magnets as described on page 1.
Connect the magnetic speed sensor to the speed controller as
shown in the diagram above.
Disconnect the jumper between terminals 2 and 13. An alarm
will be initiated about 22 minutes after the last occasion when
the magnet has passed the magnetic pulse sensor.
The alarm is interlocked when the heat exchanger is out of
operation.
To reset the alarm, switch off the power supply to the speed
controller for 2-3 seconds.
PUMZ-20 SPEED DETECTOR
max. 3 mm
1–4
1–3
GS1
220 V ~
9
8
7
24 21 22
A2
34 14
31 11 A1
32 12
5
6
4
3
10 2
11 1
Magnet
Alarm relay and relay base
Auxiliary contacts in
the drive motor
contactor
Alarm output
max 3-5 mm
GS-1
220V ~
1-3
1-4
Fig. 5
Fig. 6
6
LN
7
102
1
3
4
Alarm relay
Auxiliary contacts in
the drive motor contactor
Alarm output Indicating lamp
213141718
X7
X3
AS2
max. 3 mm
GS1
Jumper that should be
removed with the speed
detector is connected
max 3-5 mm
GS-1
Magnet
X3 X7
Fig. 7
AS2
FG_DC_4498GB_PUMZ 20_IN-MA_20180419_R0 © Copyright 2018 FläktGroup
WWW.FLAKTGROUP.COM PUMZ -20
» Learn more on www.flaktgroup.com
or contact one of our offices
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AND RELIABILITY
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in a unique position to deliver energy efficient components and solutions for
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FläktGroup ECONOVENT PUMZ-20 Installation guide
- Type
- Installation guide
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