Electrical Connections
Pump must be installed by a licensed electrician
and conform to National Fire Protection Association
(NFPA) codes 30 and 70. You, as the owner, are
responsible for seeing that the installation and
operation of your pump complies with NFPA codes
as well as any applicable state and local codes. Rigid
conduit must be used to install wiring.
Failure to follow these wiring instructions may
result in death or serious injury from shock, fire
or explosion.
The pump must be properly grounded to avoid
personal injury. Operating an ungrounded or
improperly grounded pump may result in death due
to electrical shock, fire or explosion.
Electrical wiring and connections must be made only by
a licensed electrician in accordance with national, state
and local electrical codes regarding Class I, Division 1,
Group D locations. Other codes may apply.
Thread for the conduit connection at the pump electrical
box is 1/2 inch FNPT.
A standard 15-amp breaker is recommended.
3
Your pump is designed to mount directly to a standard
2-inch female tank fitting. For the suction pipe, a 1-1/4-
inch galvanized steel pipe cut to length and threaded
on one end may be used. Suction pipe should extend to
within 3 inches of tank bottom. Apply thread tape to the
suction pipe thread and securely tighten the suction pipe
to the pump inlet port.
Install Nozzle Hanger
Attention:
The nozzle hanger for your pump was removed
before shipping to protect against damage.
To reinstall the nozzle hanger follow the steps below.
1. Remove the two 1/4"-20 x 1/2" bolts and the two flat
washers from the switch coverplate.
2. Place the two bolts through the nozzle cover and then
place the two flat washers on the bolts. The washers
are used as spacers to set the nozzle hanger away
from the switch coverplate.
3. Align the bolts with the two threaded holes on the
switch coverplate thread the bolts into the holes.
Torque bolts to 45-60 in-lb (Figure 1).
DANGER
This pump is equipped with an auxiliary AC accessory
lead. The third wire (red) is to be used to energize a
control circuit that operates a device such as a signal
light or a solenoid operated valve. Maximum amp draw
on the control circuit is 1 amp. If you do not need this
feature, ensure that the wire is insulated and enclosed
within the electrical cavity of the pump.
Connect pump to the proper voltage source. M-3130
series pumps are designed to operate on 115-volts
AC, 60 Hz or 230-volts AC, 60 Hz. Connection to
improper voltage will damage pump. Pump is set at
factory for low voltage (115-volt). For high voltage
applications (230-volt) see wiring diagram located
inside electrical coverplate.
Wiring Details
1. Remove electrical coverplate (Figure 2). Install
conduit and cable from switchbox to pump electrical
box.Wiring must be in accordance with Class I,
Division 1 requirements in the applicable national
electrical code.
CAUTION
Figure 2
Figure 3
2. Attach ground wire using the green ground screw located
inside the electrical box (Figure 3). Connect the power
cable to the pump wiring per the wiring diagram located
inside the electrical coverplate. Secure with wire nuts.
3. Position wires inside the electrical box. Replace electrical
coverplate with all seven screws and tighten securely.
Figure 1
