Timeguard TG77 User Manual

24HR / 7DAY

ELECTRONIC

TIMESWITCH

Cat. No TG77

Installation &

Operating Instructions

INSTALLATION & OPERATING

INSTRUCTIONS

Initiates countdown

1

Increments
programming
steps and when
held pressed for
approximately 4
seconds initiates
clock set mode

Output

Returns TG77 to

ON light

operating mode
with clock time
displayed

Override to next
programme change,
also gives permanent
ON/OFF and also
suspends and
reinstates
programmes

Tamper proof
reset button
(use pen or
similar
implement)

Decreases hours,
minutes, days/day
groups during
programming and
setting clock time

1. General

The TG77 is an easy to programme electronic time controller with a
large 24 hour display, offering both 24 hour and 7 day programming
options. 20 ON/OFF programmes are available which can be made to
operate over all seven days (24 hour operation), one of seven
individual days and various combinations of days. Battery back up
retains programmes and clock time in the event of mains failure and
allows out of socket programming.

The unit has the advanced feature of random delay to both start and
finish of all programmes and also has a manually initiated Countdown
time period of up to twenty four hours during which output is ON.

time period

Initiates random

delay to both

start time and

stop time of every

programme

Increases hours,

minutes, days/day

groups during

programming and

setting clock time

2. Features

●

Plug-in control.

●

24 hour and 7 day programming options.

●

20 ON/OFF programmes operating over a wide choice of day

groups and individual days.

●

Manual override until the next programme change.

●

Permanent ON or OFF facility.

●

Large display.

●

Battery back up retains current time of day and programme

memory during loss of mains supply. Also allows programming out
of socket.

●

Manual start Countdown facility.

●

ON/OFF programmes can be suspended from operation.

●

Optional random delay to both start and finish of all programmes.

●

Output ON indicator.

●

Shortest switching time of 1 minute.

●

Programme review.

●

Repeats programmes week after week continuously.

2

3. Battery

The unit has a factory fitted rechargeable battery to allow out of socket
programming and to give clock operation and memory back-up during loss
of mains supply. If the display is dim or not visible plug the TG77 into a live
socket for 4 hours before resetting and programming.
When not in use it is best to keep the TG77 plugged into a live socket to
ensure the best possible battery life.

4. Reset (RST)

The unit must be reset before programming for the first time or if the
unit has been left out of a live socket for more than 150 hours.

Press RST using a pointed object (eg a pencil).
Display will show its full set of characters and
clear to show:

The colon between hours and minutes will
flash and the seconds begin to advance.

5. Setting or Adjusting Clock

Points to remember while setting time or programming:­(Seconds display is not shown on diagrams for sake of clarity.)

The → and ← buttons alter the days/day combinations, the hours, the
minutes and programme numbers/ON or OFF designation. The ←
button also initiates the programme sequence for Countdown CTD
mode. The → button also initiates the ON/OFF programme sequence
and achieves easy SUMMER/WINTER time change when pressed at the
same time as the TIME button.

The → button increases the above value which is flashing and the ←
button decreases it. If the particular value required is towards the end
of a sequence (eg 52 for minutes) pressing the ← button can get to it
quicker (from the 00 position).

The → or ← button can be held down to provide fast advance or
reverse.

The programming process is achieved by alternate use of the SET and

3

→ or ← buttons.

The setting sequence is as follows:-
(example used is 10:52 WE being set from a reset condition (see section

4)) If you wish to use the easy Summer/Winter time changeover
described in section 13 please set the time to GMT (Winter time).

Press the SET button for approximately
4 seconds and the day symbol will flash.

Press → until the display shows WE.
Press SET, display shows:

Press → until the hour digits reach 10.
Press SET, display shows: