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9. Check labels to verify they
have not been damaged.
10. Lubricate enclosure hinges.
Spare Parts List:
The following is a list of
recommended
spare
However, conditions of ser vice
vary significantly and a general
list may not in its entirety be
applicable to a given installation.
The user should ex er cise judgment
in defining specific re quire ments
based on this guide.
1. Fuses for control transformer
primary and secondary. (If
required.)
2. VFD.
3. Bulbs for any light requiring
a bulb.
4. Control
transformer.
required.)
5. Control and time delay relay.
(If required.)
Timer
Controls
Your control panel is equipped
with a repeat cycle time delay
relay (On time first followed by
Off time and repeating). The On
and Off times have rotary switch
selectable timing ranges and
adjustment knobs for selecting the
time withn that range. Select one
of the 16 built-in ranges by setting
the rotary switch per a chart on
the time delay relay and adjust
within that range using the
appropriate knob.
6
Seal
Failure
Your mixer is equipped with a
seal fail (moisture) sensor. The
presence of water energizes the
parts.
seal leak warning output. This
activates a warning light or alarm
only, and does not stop the motor.
It indicates a leak has occurred
and the mixer must be repaired.
For standard location mixers the
resistance across the moisture seal
(seal failure) probe and ground
wire should be checked after a
seal leak warning light has lit.
For hazardous location mixers
the resistance across the moisture
seal (seal failure) probes should
be checked after a seal warning
light has lit. This can be done
by disconnecting the control
wires from the control panel
(If
and measuring the resistance
with an ohmmeter between the
wires. Refer to the control panel
schematic for wire identification.
For a standard, non-hazardous
location mixer the reading should
be 100,000 ohms or greater, and
for a hazardous location mixer the
reading should be above 33,000
ohms. If the measured values are
below those indicated above, then
the mixer may have a lower seal
failure and require service.
On control panels for hazardous
location applications the seal
leak test switch tests the seal leak
circuitry continuity. When pushed
the seal leak test bulb should light.
If the test bulb does not light, it
means either the wiring circuitry
to the seal leak probes has been
broken or the bulb has burned out.
Temperature
Failures
NOTE: Hydromatic
panels
supply
circuitry for moisture and heat
sensor connections.
Your mixer is equipped with
temperature fail sensor thermostats
attached directly to the motor
windings. The thermostats open if
the motor windings see excessive
heat and, in turn, open the motor
contactor in the control panel,
breaking the power to the mixer.
When the motor is stopped due
to an overheated condition, it will
not start until the motor has cooled
and the heat sensor reset button is
manually pushed on the front of
the control panel.
NOTE: Failure to use proper
circuitry and to connect the
motor overheat protection in the
control panel would negate all
warranties and Factory Mutual
Approval.
WARNING: Before handling
the mixer and controls, always
dis con nect the pow er first. Do
not smoke or use sparkable
electrical devices or flames in
a septic (gas eous) or possible
septic sump.
Troubleshooting
1. Mixer does not run in
Hand position.
a. Check mixer circuit breaker
b. Check
c. Check VFD to see if it is
control
®
the
correct
and control fuse for trip ping
or blown condition.
incoming
power
volt age and control cir cuit
volt age.
tripped. Reset VFD if
tripped and check mixer
current with ammeter.
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