Type JS
SA5/14/EN/1
Multi-Leaf Damper
TROX (South Africa) (Pty) Ltd.
10 Wigford Road
Masons Mill
Pietermaritzburg
Tel. +27 (0)33 398 1006
Fax. +27 (0)33 398 1100
email : pmb@troxsa.co.za
Website: www.troxsa.co.za
Description
Description 2
Construction & Installation 3
Order Details 4
2
The Multi-leaf damper is used primarily for volume control.
It consists of a formed channel section frame, containing
linked single skin formed blades, which can be arranged for
either opposed or parallel operation. The unit is operated by
an external lever which is suitable for connection to electric
or pneumatic actuators, or to a locking quadrant for hand
operation.
Construction:
Casing and blades are made from galvanised sheet steel:
casing = 1,0mm
blades = 1,0mm
Blade spindles and external linkages are made from galva
nised steel.
Plain bushes are made from ACETAL RESIN (max temp 110°)
but can be made of brass if requested.
Locking quadrant may be supplied as an option. The locking
quadrant is used in conjunction with a U-channel for manual po
sitioning and locking of the blade postion. Actuators (if ordered)
will be supplied and mounted on all dampers of single construc
tion. Where dampers are split (see config 1 & 2 on page 3) the
actuator will be supplied separately with mounting bracket for
assembly on site by others.
Drive arm is made from galvanised steel. (An extended spindle
can be supplied as an option for use by the client. However,
this is standard when the damper is supplied with an electric or
pneumatic actuator).
B
180
H
Quadrant
(Standard)
Handlever
(Standard)
25
25
Construction & Installation
Where the B and H dimensions are greater than 1200, 2 dampers will be supplied for installation side by side or one above the
other. They may be installed either with or without a masonary
subframe.
Configuration 1: The actuator can be fitted by others on site.
Configuration 2: Acuator can be fitted by others on site, where
actuators drive individual sections.
3
Installation Details
Dampers are mounted using M8 bolts, making for easy de-mounting and
re-installation (See figs 1 & 2 below).
Scope of supply for masonary sub-frames:
Masonary sub-frame made from galvanised steel 40 x 40 x 3 angle with
welded builders cleats. Galv bolts, nuts and washers are supplied for as
sembly by others.
Scope of supply for matching flange:
Matching flange made from galvanised steel 40 x 40 x 3 angle. Galvanised
bolts, nuts and washers are supplied for assembly by others.
1 * Matching flange
(for all types)
2* Masonary subframe
Sub divided on B dimension Sub divided on H dimension (H1 = 2H + 50)
Configuration 1
Configuration 2
Configuration 1
Installation opening
without subframe B/H
B
B
B1
B1 = 2B + 130
Matching Flange (Opt.)
Joining Strip (Opt.)
76 X1,6
B1 = 2B + 50
H
H1
50
H
H/B
H/B
WITH SUBFRAME
H + 20/B + 2D
Matching flange
Masonary subframe
M8 Bolts
welded on
Builders
Cleats
welded on
H/B
H/B
WITH SUBFRAME
H + 20/B + 2D
Order Details
4
Design changes reserved • All rights reserved © TROX (South Africa) (Pty) Ltd October 2005
Order Code JS
JS - B + Q / R / ? / 400 X 600
Damper
Blade arrangement:
B = Opposed blade
Operating Options:
Q = Not Motorised
E = Electric Actuator
0 = Motor Free Issue
Size W x H
Order Example:
Make: TROX
Type : JS - B - E / R / LM230A / 400 X 600
? = actuator to be specified
Right Hand Standard
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