Fig. 17: Pneumatic actuator without solenoid valve
①
Double acting pneumatic actuator
②
Single acting pneumatic actuator
③
Throttle valve
④
Flow reducer (noise reduction)
Limit switch
Fig. 18: Connecting cable core identification for limit
switch
1
Common contact
2
NC contact
4
NO contact
Commissioning and maintenance
Commissioning
Personnel:
HVAC technician
As part of commissioning, the multileaf damper
must be tested for correct functioning.
NOTICE!
JZ-LL-AL / JZ-HL-AL with quadrant stay
JZ-LL-AL / JZ-HL-AL multileaf dampers have a
quadrant stay which functions as a travel stop
(open/close). Using the damper without the quad-
rant stay may cause damage to the blades.
Do not use multileaf dampers JZ-LL-AL / JZ-HL-
AL without the quadrant stay.
Before commissioning, loosen the nut of the lever
that locks the quadrant stay during transport.
Maintenance
The multileaf damper and the actuator are mainte-
nance-free with regard to wear but multileaf
dampers must still be included in the regular
cleaning of the ventilation system.
Commissioning and maintenance
Multileaf dampers Type JZ-* / WG-JZ-*
10