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www.plymovent.com PUM_BRC-450_090305_EN 4/4
MAINTENANCE
Check the balancer housing for cracks or loose screws twice (2) a year.
The cable must also be checked twice (2) a year.
If there is visible damage to the cable (e.g. broken threads), the balancer must be replaced.
Plymovent has a replacement system for factory restored balancers.
The lifting spring is designed for 15000 extensions.
Adjustment of tension:
Normally the balancer should not be adjusted, but if neccessary the balancer should be properly fixed.
Use a 27mm wrench at the center.
Adjust the tension according to ”+ and -” on the balancer.
To decrease the tension the locking mechanism must be hold out while turning the center against minus, ” - ”.
The balancer is delivered with 3 turns of pre-tension from zero position, (loose cable).
Maximum pre-tension is 5 turns from zero position!
ELECTRICAL INSTALLATION
The micro-switch BRC-MS contains a 2-pole electrical switch with two NC normally closed contacts to be used for
control of an electrical damper or/and a fan starter.
The switch is IP-65 and has a 6A 230VAC rating.
SPARE PARTS
The balancer contains a strong spring and we do not recommend to open the balancer yourself.
Plymovent has a replacement system for factory restored balancers.
1. Tension adjustment locking device Art.Nr. 90130-024
DECLARATION OF CONFORMITY
We, Plymovent AB, hereby declare under sole responsibility that the product BRC-450
conforms to the following standards: EN 292-1, EN 292-2 according to the directive, 98/37/EG.
This declaration will cease to be valid if any modifications are made to the product
without our express approval.
Plymovent AB
Sågvägen 19
921 28 Lycksele, Sweden
Lennart Wallberg
R&D Manager
05/10/2006