REFCO YUMA - Manual (Page 5)

Fig.5.
Alarm Contacts
Volt Free Break On Fault connection
is rated 5 amps 1250VA. It may be
necessary to use a contactor if the air
handler supply is to be switched.
Cable Connections
Wire Colour Connect Symbol
1 GREEN/ YELLOW EARTH E
2 BLACK LIVE L
3 WHITE NEUTRAL N
4 VIOLET Alarm contact
5 VIOLET Alarm contact
E L N
POWER SUPPLY
CONTROL
CIRCUIT
1A
FUSE
1 2 3 4 5
Wiring Connections
Connect the ground, live and neutral wire from the supply cable of the YUMA pump to
the supply terminals (see Fig.6)
This product must be connected using a switch with contact separation in all poles that
provide full disconnection from the power supply under over-voltage categories III. A
fuse non time delay (rated 250V 1A), shall be fitted into the line, supply side (see Fig.5).
Testing
Before testing, ensure that the collection tray and drain hose is free of dirt and debris.
Pour clean tap water into the collection tray until the pump starts. Pump operation may
be noisy initially until any air has been purged from the system.
Continue to add water and the pump should switch to full power and the alarm contacts
should open. Do not continue to add water if it becomes visible in the breather tube.
Allow the YUMA to clear the water. The pump should switch off and the alarm relay
should reset.
GB
4