The rate of flow in the discharge pipe must keep any solids
present in suspension in the fluid. To meet minimum flow
requirements of 61 cm/sec (2 feet per second) in discharge line,
size pipe as follows:
A Pipe Size Of:
Will Handle a Flow Rate Of:
51 mm (2”)
79.5 L/M (21 GPM)
63.5 mm (2-1/2”)
113.5 L/M (30 GPM)
76 mm (3”)
182 L/M) (48 GPM)
Use a 51 mm (2") check valve in pump discharge to prevent
backflow of liquid into sump basin. The check valve should be a
free flow valve that will easily pass solids.
NOTICE:
For best performance of check valve when handling
solids, do not install it with discharge more than 45° above the
horizontal. Do not install check valve in a vertical position as
solids may settle in valve and prevent opening on startup.
Drill a 5 mm (3/16") hole in discharge pipe about 25-50 mm
(1 to 2") above pump discharge connection (but below check
valve) to prevent airlocking the pump.
Electrical
Hazardous voltage. Can shock, burn, or
cause death.
When installing, operating, or servicing this
pump, follow safety instructions below.
1.
DO NOT
splice the power cord, submerge electrical cord
plug, or use extension cords.
2.
DO NOT
handle or service pump while it is connected to
power supply.
3.
DO NOT
remove grounding prong from plug or modify
plug. Power cord on 1-phase units is a 3-wire conductor with
a 3-prong grounded plug. Plug pump into a 3-wire,
grounded, grounding-type receptacle. If there is no 3-wire
grounded receptacle to plug into, remove plug completely
and wire pump directly into terminal block in automatic float
or duplex controller box. Connect pump according to all
applicable codes.
For automatic operation, plug or wire pump into an automatic
float switch or duplex controller. For continuous operation, plug
directly into an electrical outlet or wire directly into switch box.
Connect pump to its own circuit with nothing else on the circuit.
See chart below for fuse or circuit breaker sizes.
Risk of electrical shock and fire. Be sure
that power supply information (Voltage/ Hertz/Phase)
on pump motor nameplate matches incoming power
supply exactly. Install pump according to all electrical
codes that apply.
Fuse or
Dual Element
Voltage/Hz/
Circuit
Time Delay
H.P.
Phase
Breaker Amps
Fuse Amps
1, 1
1
⁄
2
, 2
220/50/1
25
15
1, 1
1
⁄
2
, 2
220/50/3
20
12
1, 1
1
⁄
2
, 2
380/50/3
15
8
Operation and Installation
NOTICE:
Do not allow pump to run in a dry sump. It will void
the warranty and may damage the pump.
In 1-phase units, an automatic overload protector in the motor
will protect motor from burning out due to overheating/overload-
ing. When motor cools down, protector will automatically reset
and start motor.
If overload trips frequently, check for cause. It could be a stuck
impeller, wrong/low voltage, or electrical failure in motor. If an
electrical failure in the motor is suspected, have it serviced by a
competent repairman.
Pump is permanently lubricated. No oiling or greasing is
required in normal service.
SERVICE
General
Hazardous voltage. Can shock, burn, or
cause death.
Before servicing pump, disconnect electrical
power to pump and control switch.
After removing basin cover and necessary discharge piping, lift
pump out of basin.
Place pump in an area where it can be cleaned thoroughly.
Remove all scale and deposits on pump.
Submerge pump in disinfectant (chlorox or chlorine) for at least
one hour before disassembling pump.
The pump motor housing contains a special lubricating oil. Keep
oil clean and free of water at all times.
NOTICE:
Whenever motor housing is being removed for
service, remove oil and replace with new oil at reassembly. Use
only oil listed in parts list (Part No. U197-8A). When filling with
new oil, DO NOT overfill. To allow room for expansion, oil
level with cold motor should be about 1/4” above top of motor
assembly.
Impeller, Seal, and Capacitor Replacement
Risk of electrical shock. Disconnect
electrical power from pump before doing any service
work on it!
Disassembly
1. Remove motor assembly from volute and set it on its side in
a clean area.
2. Hold impeller; remove impeller screw and washer.
3. Slide impeller off of shaft for cleaning. If necessary, tap
impeller gently to loosen it.
4. Loosen cord connector, remove capacitor cover capscrews
and capacitor cover. Turn pump upside down to drain oil.
Risk of electric shock. Before
touching capacitor, discharge it by shorting the
terminals together with an amber handled
screwdriver.
2
Stator
Leads From
White
Red
Black
White
Green
Black
Capacitor
Cord Stator
Lead
Leads
#L1
to
#1 & 6
#L2
to
#2 & 4
#L3
to
#3 & 5
380 Volt
Cord Leads
Stator Leads
#L1(Red) to
#1
#L2(Black) to
#2
#L3(White) to
#3
Connect #4,5, and 6 together.
Capacitor Connections
(Single Phase Only)
3-Phase Connections
220V
