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TROUBLESHOOTING GUIDE 

 

PROBLEM 

CAUSE 

SOLUTION (to be applied only by qualified personnel, i.e. the Installer)

Power loss. 

• Check the operator terminal blocks on the control unit for power supply 

presence. 

•  Check the integrity of the operator supply cable and eventually replace it. 

Fuse blown. 

•  Replace the fuse. 

The operator 
doesn't work. 

Thermal protection is active.  •  Leave the operator stopped for at least 5 minutes; try a new manoeuvre when 

it gets cooler. 

With CR/62: 
the impact control system 
detected an obstacle. 

•  Switch the power off, manually unlock the release mechanism and eventually 

remove any obstacle. Then relock the release mechanism. 

• Repeat the leaf movement automatic learning procedure, or set more 

appropriate values to parameters regulating operator strength and impact 
sensitivity. 

•  Impact control can be set less sensitive or can be deactivated completely (see 

CR/62 instruction manual). In this case other safety precautions must be taken
(for example a safety edge) in compliance with the laws in force. 

ATTENTION!:

  Any modification must be taken by qualified personnel only, 

since 

you, as the Installer, are responsible of the 

installation and of its safe functioning

Wrong end limit  setting. 

•  Check and set the positions of the end stop sliding plates and their action on 

the actuator spring. 

The leaf 
doesn't 
complete its 
travel. 

Wrong operator positioning.  •  Check the distance between the rear side of the operator and the sliding plates

to be between 25 and 35mm. 

With CR/62: 
decelerated manoeuvre after 
a power loss. 

• When the power returns, the leaf can be at half path. Next command will

cause a decelerated realignment to an end limit switch. Next manoeuvres will 
be regular. 

The leaf 
moves slowly 
even outside 
the 
deceleration 
zones. 

With CR/62: 
decelerated manoeuvre after 
an impact or after the 
activation of the safety edge. 

• Manoeuvres after an impact or after the safety edge intervention will be 

performed as decelerated realignments to an end limit switch. Next 
manoeuvres will be regular. 

Starting a 
manoeuvre, 
the leaf 
moves with 
difficulty. 

The operator start capacitor 
is exhausted. 

•  Measure the capacitance of the capacitor and eventually replace it. 

The leaf is 
blocked 
against the 
mechanic 
stop. 

Sliding plates setting is 
incorrect. 

•  Remove the operator plastic band from the lower part of the unit. 
•  Unscrew the nuts on the J-bolts completely and take off the washers. 
•  Slip off the operator from its position on the base plate to release the pinion 

from the rack. 

•  Manually move the leaf far from the mechanic stop. 
•  Unlock the operator pushing down the release flap. 
•  Reposition the operator on the base plate. 
• 

Reposition the sliding plates accurately (follow the given procedure).

• Put the plastic band back in place and lock the operator raising the release 

flap. 

•  Repeat the leaf movement automatic learning procedure. 

Unreliable connection of the 
antenna. 

Check the correct installation of the antenna cable at the terminal blocks of both 
the control unit and the flashing light. 

Radio 
coverage of 
remote 
controls is 
reduced. 

External antenna needed. 

To obtain the maximum radio coverage, disconnect the antenna inside the 
flashing light and replace it with the optional external antenna OG/50 (SERAI 
code 25.50). 

 
 

Содержание MT/604

Страница 1: ...es RoHS 2011 65 UE Generic reference standards Household and similar electrical appliances safety part 1 generic standards EN60335 1 2013 Electromagnetic compatibility immunity part 2 generic standard...

Страница 2: ...IRONMENTS 1 Verify the presence of an isolating switch upstream the installation with an open contact clearance of 3mm or higher 2 Before operating any wiring switch OFF the isolating switch the 0 sym...

Страница 3: ...SE PLATE A Screw one nut onto each of the 2 J bolt until it is positioned 35mm from the end Fit the J bolts through the holes in the base plate Screw another nut onto each J bolt without tightening B...

Страница 4: ...ating the grub screws Fit the washers onto the J bolts then screw the 2 nuts without tightening them completely These nuts will have to be tightened only after the definitive placement of the tooth ra...

Страница 5: ...plates width is covered Fix the bars using self tapping M6 screws not supplied Upon completion of the installation vertically adjust the rack position through its slots so that moving manually the lea...

Страница 6: ...e differences it is advised to control the actual leaf stop positions both is summer and in winter B FASTENING Once found the correct position fasten the closing sliding plate to the tooth rack using...

Страница 7: ...7 MT 404 MT 604 MT 804 CABLES DESCRIPTION CONNECTING OPERATOR AND OTHER DEVICES TO THE STANDARD CR 62 CONTROL UNIT...

Страница 8: ...a power loss When the power returns the leaf can be at half path Next command will cause a decelerated realignment to an end limit switch Next manoeuvres will be regular The leaf moves slowly even ou...

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