Installation • Operation
5
6. use a control panel sized to match the pump. refer
to control panel installation instructions for wiring
connection information.
7. Install the pump in accordance with all electrical
codes that apply. Install a fused disconnect switch or
circuit breaker in accordance with local codes.
8. any alterations to internal pump circuitry must be
made using crimp connectors and professional tools.
9. the pump rotation must be clockwise (
– viewed
from the top of the pump). neVer operate the pump
in reverse.
If a three phase unit runs backwards, interchange
two of the three power supply wires to reverse the
motor’s direction of rotation.
Control Panels
Risk of electrical shock . Ground pump
and motor before connecting controls or power supply.
adhere to local electrical codes governing pump and
control installations.
a control panel is not included with the pump. Install
a simplex or duplex control panel (purchase separately)
for proper pump operation. single phase pumps require
a start package, as shown in Product Specifications. a
full range of controls and switches are available from
your dealer.
If a Jung pumpen control panel is not used, install a
control panel with circuit breaker or fused disconnect
as required by local code. use magnetic starters with
ambient compensated overload protection. three phase
units require three line protection; single phase units
require only one line protection. Inadequate protection
voids the warranty.
Co ntrol Panel Overload Adjustment –
Three Phase
NOTICE: see your con trol panel in stallation and
operating instructions before adjusting overload setting.
set the overload protective device to the nameplate full
load current.
size the overload protective device so that the trip
current is 115% of the nameplate full load current.
Operation
Risk of cuts and possible unexpected starts .
rotation of the cutter with hands in the cutter area can
cause loss of fingers. disconnect the electrical power and
keep your hands away from the pump inlet opening when
working on or handling the pump for any reason. do not
use automatic reset controls with this pump.
single phase units have an automatic overload protector
in the motor which will protect the motor from burning
out due to overheating/overloading. When the motor
cools down, the overload protector will automatically
reset and start the motor. this can happen at any time.
three phase units require external overload protection.
If the overload trips frequently, check for the cause. It
could be:
• stuck impeller
• wrong/low voltage
• bad thermal overload protector
• electrical failure in the motor. If the motor has
electrically failed, replace the pump.
Grinder Assembly: the grinder unit consists of a
cutting rotor and a cutting plate. persistent jamming
and clogging of the pump indicates dull or worn
grinder parts. If either the cutting rotor or plate is dull,
replace both.
NOTICE: normal domestic sewage will cause very little
dulling or wear of the pump parts. However, pumping
abrasives (such as fine sand) will increase wear and
tear and may make it necessary to replace the grinder
assembly frequently.
the pump is not equipped with thermostats or a leak
sensor probe. check the seal chamber oil condition
quarterly in heavy duty service or annually in light
duty service.
NOTICE: Failure to monitor the oil condition voids the
warranty. Motors damaged by flooding of the motor
cavity due to seal or o-ring failure may not be covered
under warranty.
Verify the capacity of the pump by checking the
discharge. Verify that the pump is free from any vibration
and noise.
to avoid overheating the motor for continuous operation,
the pump must be completely submerged in liquid. set
the level switches to maintain this submerged condition.
do not allow the pump to run in a dry sump. It will void
the warranty and may damage the pump.
