Multiquip submersible pumps px400 - Manual (Page 20)

page 20 — cx400/px400 Sub. pump • operation and partS manual — rev. #1 (12/03/10)
OperatiOn
turning on the pump
If all of the pump's electrical requirements have been met,
place the circuit breaker or power ON/OFF switch in the
on position.
The CB3 control box has an operation switch located on the
front cover. This switch has 3 positions, auto, manual
and oFF. The auto position allows the pump to run in
an un-attended mode.
The
manual position will let the pump run without the float
switches controlling the pump. When in the manual mode
be careful not to let the pump run dry. Severe damage to
the pump may occur if it is allowed to run dry. never let
the pump run dry.
manual operation
1. For manual operation of the pump, place the 3-position
operation switch (Figure Figure 13) on the control box
in the manual position.
Figure 13. Manual-Off-On SW. (Man. Position)
2. The AC power indicator lamp (Figure 14) should be lit
( on).
Figure 14. AC Power Indicator Lamp (ON)
3. Wait a few seconds and water should begin to flow
from the discharge hose.
4. If water is not flowing from the discharge hose or not
flowing freely after a few minutes, remove the power
from the pump and check the system for leaks.
5. To stop the pump from pumping, place the operation
switch in the oFF position.
ON
automatic operation
1. For unattended operation of the pump, place the
operation switch (Figure 15) in the auto position.
Figure 15. Manual-Off-On SW. (AUTO Position)
2. In the auto mode the pump will run as long as there
is a sufficient amount of water for the start float switch
to be activated. This water level is determined by the
setting of the float switches.
The
stop float switch contacts will open when the
water level is low and power will be removed from the
pump's motor.
3. Once the water level has risen back to the appropriate
level the start float switch contacts will close and power
will be restored to the pump's motor.
Shut-down
1. Place the 3-position operation switch on the control
box in the oFF position (Figure 16).
Figure 16. Manual-Off-On SW. (OFF Position)
2. Verify that the control box power ON light is oFF.
3. Remove the power from the pump by turning off the
circuit breaker or switch that provides power to the
pump. Remember to make sure that hands are dry (not
wet), and feet are not standing in water when removing
or disconnecting power from the pump.
4. Using the lifting rope, lift the pump up from its current
position. Remove the discharge hose from the
discharge port on the pump.
5. Remove all power cables and float switches from
the control box. Place cables and float switches in a
suitable container where they will not get damaged.