Troubleshooting - Nabco GYRO TECH Magnum IV Control Wiring And Adjustment Manual

Troubleshooting:

Symptom
Operator does not function
Adjustment of Hydraulic
Closer has no effect. (GT-
710 only)
Door slams closed
Door slams open
Fuse 2 (F2) blows when
door open is triggered
Motor spins when
activated but door does not
open
Back check adjustment on
Magnum board has no
effect
No back check
Door does not stay tightly
closed
Page 12
Action/Cause
1. Check Fuse 2 (F2).
2. Check for 120 VAC at
connector J5
3. Check power to activation
device at connector J1.
4. Check Fuse 1 (F1)
Check 4 pin motor connector
on the board
1. GT-710: Main speed on
hydraulic closer not adjusted
properly
2. GT300/400/500: Closing
speed not adjusted or motor
circuit open
1. All units: Back check speed
not adjusted
2. GT-710: magnet not in
proper location
3. GT-300/400/500: Operator
not preloaded correctly
Check door activation device
power consumption
1. GT-500: Check polarity of
motor input wires at connector
on motor
2. All units: motor/operator
coupling or spyder coupling
loose between motor and
operator
1. GT-710: The fully open door
position is greater than 90º and
the back check adjustment on
the hydraulic closer is
overriding the controls of the
Magnum board
2. All units: Door is not going
into back check even though it
is reaching 90 degrees
1. GT-710: Magnets on main
sprocket not in correct position.
2. GT-300/400/500: back check
switch not closing at correct
position
1. All units: Preload on swing
arm is not correct
2. GT-710: Spring adjustment
not correct on LCN closer.
3. GT-710: Building stack
pressure is excessive
www.NabcoEntrances.com
Magnum IV Control Manual for Gyro Tech Swing Door Systems
Solution
1. Replace fuse
2. Check incoming power. If power is good, check
connection to motor. Replace motor if necessary
3. If power exceeds 0.5 amps at 24 VAC, replace with
lower draw sensor. If blown, replace fuse.
4. If F1 is OK, check power to activating devices at J2.
Voltage is too low, reduce accessory load
For GT-710's only: Pin #2 and #4 must be jumped by a
wire
1. Turn main speed in direction of turtle
2. Adjust closing speed on Magnum control 2. check for
open connection on motor circuit
1. Adjust back check speed on hydraulic closer or Magnum
control
2. Adjust back check potentiometer or relocate magnet
3. Pre-load operator by correctly installing arm on operator
spindle as per hardware installation manual
If power draw exceeds 0.5 amps at 24 VAC, replace with
lower draw sensor
1. Reverse motor leads on motor
2. Remove and separate motor and operator. Inspect
couplings for looseness
1. Adjust the back check screw on the bottom of the header
out one turn
2. Reposition magnet on GT-710 or correctly pre-load arm
on GT-300/400/500 as per hardware installation manual
1. Follow instructions in GT-710 hardware installation
manual to properly align magnets.
2. Follow instructions in GT-GT300/400/500 hardware
installation manual to properly pre-load operator
1. Position arm as shown in hardware installation manual
2. Adjust spring tension on LCN closer as per GT-710
hardware installation manual.
3. Upgrade operator unit to GT 500
1/4/06