Submersible Effluent & Sewage/
Solids Handling Pump
INSTALLATION, OPERATION, & PARTS MANUAL
SAFETY INFORMATION
Carefully read and follow all safety instructions in this
manual or on pump.
This is the safety alert symbol. When you see this
symbol on your pump or in this manual, look for one of the
following signal words and be alert to the potential for
personal injury!
warns about hazards that will cause serious
personal injury, death or major property damage if ignored.
warns about hazards that can cause serious
personal injury, death or major property damage if ignored.
warns about hazards that will or can cause
minor personal injury or property damage if ignored.
The word NOTICE indicates special instructions which are
important but not related to hazards.
NOTICE: Pump must be installed in a vertical position only.
Installing pump in any other position will void warranty.
1. To avoid serious injury and/or property damage, read
these rules and instructions carefully.
2. Check your local codes before installing. You must com-
ply with their rules.
3. Vent sewage or septic tank according to local codes.
4. Do not install pump in any location classified as hazard-
ous by National Electrical Code, ANSI/NFPA
70-1984.
5. Pump normally runs hot. To avoid burns when servicing
pump, allow it to cool for 20 minutes after shut-down
before handling it.
6. Do not run pump dry. Dry running can overheat pump
and will void warranty.
7. Pump is permanently lubricated. No oiling or greasing is
required in normal operation. For overhaul, see instruc-
tions under "Service", Page 4.
Hazardous voltage. Can shock, burn,
or cause death. During operation the pump is in water.
To avoid fatal shocks, proceed as follows if pump needs
servicing:
293 WRIGHT STREET, DELAVAN, WI 53115 WWW.FEMYERS.COM
PH: 888-987-8677
© 2015 Pentair, Ltd. All Rights Reserved.
MWS9 and MWS39 SERIES
8A Ground pump according to all applicable codes and ordi-
nances.
8B. Disconnect power to outlet box or circuit breakers before
servicing.
8C. To reduce risk of electric shock, take care when changing
fuses or resetting circuit breakers. Do not stand in water
when working on control box or with circuit breakers.
Single Phase Pumps:
8D. When using cord and plug, plug into a grounded outlet
only. When wiring to a system control, connect pump
ground lead to system ground.
Three Phase Pumps:
cord and strain relief. Do not connect conduit to pump.
8E. Three phase pumps are intended for permanent connec-
tion only. Provide strain relief at control box for power
supply cord connection to box. All control components
must be UL listed and suitable for end use application.
Only qualified personnel should install the pump and
associated control equipment.
California Proposition 65 Warning
This product and related accessories contain
chemicals known to the State of California to cause cancer,
birth defects or other reproductive harm.
DESCRIPTION
These pumps are designed for sewage, effluent and waste
water removal, sump drainage, liquid transfer systems, cir-
culation, dewatering and flood control. Pump motors range
from a 115V or a 230V single phase to a 208-230V or 460V
three phase. All models come with a 20' 3-prong grounding
type cord and plug.
Models MWS7, MWS9 and MWS9 are rated for continuous
duty when fully submerged in a liquid with a maximum tem-
perature of 105° F (40.5° C).
The maximum liquid temperature is 130°F (55°C).
NOTICE: This unit is not designed for applications involving
salt water or brine! Use with salt water or brine will void
warranty.
490 PINEBUSH ROAD, UNIT 4, CAMBRIDGE, ONTARIO, CANADA N1T 0A5
PH: 800-363-7867 FAX: 888-606-5484
ME7 SERIES
M37 SERIES
MWS37 SERIES
Risk of electrical shock. Do not remove
MY995 (09/18/15)