Figure 6: Correct wiring practice
To wire the switch, complete the following steps:
1. Remove the tamper resistant cover screw with the
special tamper resistant key.
2. Route the wiring through an agency approved
conduit connector and attach the connector to the
switch.
Note: If a second conduit entry is required,
remove the knockout plug. To remove the
knockout plug, place a screwdriver on the
inside edge of the knockout. Do not place the
screwdrive in the center.
3. Connect the wiring to the appropriate terminals
according to the correct wiring practice as shown
in Figure 6, and the required configuration as
described in Figure 7.
Note: A ground screw is provided with each
switch. When grounding is required, clamp
the grounding wire between two conduit
entrance holes with the ground screw.
Figure 7: Typical wiring connections
Adjusting the retard delay setting
About this task:
The switch retard delay setting may be adjusted in the
field from the default setting in order to change the
retard delay. Figure 8 shows the location of the retard
adjustment wheel for adjusting the retard delay.
Figure 8: Waterflow switch retard delay adjustment
wheel
Callout Description
1 Tamper resistant cover screw
2 Cover
5 Saddle or thread connection
10 Retard delay adjustment wheel
11 Cover gasket
1. Rotate the retard adjustment wheel as follows to
adjust the retard delay:
- Clockwise to increase the retard delay
- Anti-clockwise to decrease the retard delay
Note: The retard delay should be set at the
minimum delay required to prevent false
alarms.
2. Re-test the switch to ensure the retard delay is
accurate.
Care and maintenance
The TYCO Model TF Vane Type Waterflow Switch must be
maintained and serviced in accordance with this section,
in addition to any specific requirements of the NFPA, and
any impairment must be immediately corrected. The
inspection procedure must be performed as described.
Before closing a fire protection system control valve for
inspection or maintenance work on the fire protection
system that it controls, permission to shut down the
affected fire protection system must first be obtained
from the proper authorities and all personnel who may
be affected by this action must be notified. After placing
a fire protection system in service, notify the proper
authorities and advise those responsible for monitoring
proprietary and/or central station alarms.
The owner is responsible for the inspection, testing,
and maintenance of their fire protection system and
devices in compliance with this document, as well as
Model TF Vane Type Waterflow Switch APAC Only 7
