DELAY-ON-REVERSE
MODIFICATION K-LINE
71-9092061 FOR T, GT, J, H, GH, SD & GSD STANDARD DOOR
OPERATORS WITH 24V CONTROL CIRCUITS MODELS
WARNING
WARNING
CAUTION
WARNING
To prevent possible SERIOUS INJURY or DEATH,
disconnect electric power to operator BEFORE installing.
ALL electrical connections MUST be made by a qualified
individual.
APPLICATION
This modification is standard on Model GH-300. Not for use
with solid state logic control boards (L).
• The operator must have C2/B2 wiring (not for medium
duty operators).
• Recommended for heavy doors and where frequent
reversing may be expected due to high usage.
FUNCTIONS
Modifies the operator control circuit so the the door must
stop for one second before reversing, in either direction.
This delay allows the door and operator to come to a more
complete stop than would happen if there was no delay.
• Prevents shock loading of the door and operator
especially if a safety device or other open override is
activated during closing, resulting in a longer life of the
operator.
• This delay has no effect on starting an operator that has
been stopped for longer than 2 seconds.
PREPARATION
Unpack kit to verify the parts listed at right are included.
Refer to installation instructions on reverse side.
PACKING LIST
DESCRIPTION
Delay-on-reverse instruction
Sheet 1PH operators
Delay-on-reverse 1PH wiring diagram
Relay, small TPDT, 115V*
Relay, 3PDT (IR)**
Relay, 24VDC COIL, DPDT
Wire ties
Time delay assembly
Pan head phillips screw, #6-32 x 3/8"
#6 Tinnerman
Blue wire, 11" 16GA. .250"
Fork x .187" INS. faston
Orange wire, 4" 18GA. .187"
Faston x .187" INS. faston
Purple wire, 4" 18GA. .187"
Faston x .187" INS. faston
* Used on 115V operators
**Used on 230V operators
QTY
1
1
1
1
1
3
1
4
4
1
1
1
1. Disconnect power to operator.
2. Locate the IR (instant reverse) relay-line voltage coil with
6 wires: 2 black, 1 red, 1 purple, 1 orange and 1 yellow.
Exchange this relay with the 3PDT relay provided. Be
sure that the new relay has the same coil voltage as the
existing relay. Connect the wires from the original relay
to the new relay (Figure 1).
6. Unplug the red wire from the IR relay and plug it into
the normally closed (NC) terminal of the TD relay.
Install a purple jumper from the common (C) terminal
of the TD relay, that corresponds to the red wire, to the
normally open (NO) terminal of the IR relay where the
red wire was.
7. Plug the TD module onto the two coil terminals of the
TD relay. Connect the white wire into the wire nut that
contains 1 yellow from transformer, 1 orange from
open limit and 1 purple from close limit there may also
be one or two red wires in this wire nut. Be sure the
other wires all remain in the wire nut.
8. Connnect the orange wire to the center of the normally
closed (NC) terminal of the IR relay.
9. Connect the blue wire from terminal 3 to the center
common (C) of the IR relay - this terminal corresponds
to the orange wire just installed that came from the TD
module.
10. Reconnect power to the operator.
Whenever the operator is running and the open override is
activated-safety edge or radio control or open button, etc. the delay provides for a delay before the operator will open.
This delay does not delay the stopping action, just the
restart. This delay does not cause a delay on starting an
operator from rest as long as the operator has been
stopped for longer than 2 seconds.
FIGURE 1
Purple
Red
Black
NC
NO
C
Instant Reverse
(IR) Relay
Coil Voltage
Same As Line
Voltage
Coil
NC
NO
C
Black
Yellow
Orange
3. Install the 24VDC relay in a convenient location, if
possible install close to the IR relay from step 2. This is
the TD relay.
4. Use figure 2 to assist with the rest of the installation
instructions.
5. Unplug the yellow wire from the IR relay and plug it into
the normally closed (NC) terminal of the TD relay. Install
an orange jumper from the common (C) terminal of the
TD relay, that corresponds to the yellow wire, to the
normally open (NO) terminal of the IR relay where the
yellow wire was.
FIGURE 2
Terminal #3
Red
Orange
Purple
Yellow
New Purple Jumper
Existing
Wire Nut
Purple
Red From IR
White
Black
Blue
NC NO
C
TD Relay
Coil
IR Relay
NC NO
NC NO
C
Black
Yellow From IR
Orange
New Orange Jumper
Orange
01-11721E
© 2007, The Chamberlain Group, Inc.
All Rights Reserved
C
Coil
TD
Module