1
Green Ground
Neutral
Line
CAP
A
CIT
OR
2 3 4 5 6 7 8
6
Start-Up
Do not use the pump to vent the system. Do not start the
pump before filling the system. Never operate the pump dry.
Operation
GRUNDFOS domestic circulating pumps, installed properly and
sized for correct performance, will operate quietly and efficiently
and provide years of service. Under no circumstances should
the pump be operated without water circulation or without the
minimum required inlet pressure for prolonged periods of time. This
could result in motor and pump damage.UPS model pumps are
multispeed, and the speed can be changed by a speed selector
switch located on the front of the terminal box. UP models are
single speed.
Failure to Operate
When UPS 15-42 and UPS 26/43 pumps are first started, the shaft
may rotate slowly until water has fully penetrated the bearings.
If the pump does not run, the shaft can be rotated manually. To
accomplish this, switch off the electrical supply, and close the
isolation valves on each side of the pump. Remove the indicator
plug in the middle of the nameplate. Insert a small flat blade
screwdriver into the end of the shaft, and gently turn until the shaft
moves freely. Replace and tighten the plug. Open the isolation
valves and wait 2 to 3 minutes for the system pressure to equalize
before starting the pump.
NOTE: After a long shut down multi-speed pumps should be
started on speed 3 and then adjusted to the regular setting. The
UPS 15-42 has automatic function to assist in restart.
*IMPORTANT NOTE*: For figure 1, the cap plug has not been
installed. This pump is supplied with two wiring
ports. To
ensure safe operation of your installation, the enclosed cap plug
MUST be inserted into the unused port.
*UP(S) 15 capacitor wire position 4 & 8 *UP(S) 26/43/50
capacitor wire position 2 & 4
Wiring diagram for
115V and 230V
multi-speed pumps
Figure 2
Green Ground
Neutral
Line
Wire the hot lead to terminal "L," neutral wire to terminal "N," and
ground to the grounding terminal. For 230 volt pumps, the two hot
leads should be to "L" and "N" and the ground to the grounding
terminal.
Limited Warranty
