Graco ToughTek MP40, Руководство по эксплуатации

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Troubleshooting
3A4349B 21
Poor finish or irregular spray
pattern Inadequate air assist air pres-
sure. Adjust the air assist air pressure output on
the applicator.
Dirty, worn, or damaged spray
applicator. Service the spray applicator (see applicator
manual).
Pump is noisy when pumping Pumping water without dish soap
or a slick agent. Add dish soap or a slicking agent to the water
Pump is running with no material
or fluid in the hopper. Add material to hopper or shut off pump.
Erratic accelerated speed Material supply exhausted. Refill the hopper and prime pump with mate-
rial.
Motor is powered but nothing
comes out of the hose Pump pressure is too high, stator
is too tight. Loosen stator to achieve suitable pumping
pressure.
Pump is packed out with dry or
cured material. Disassemble and clean the pump.
Hose is packed out with dry or
cured material. Clean or replace the material hose.
Material is too thick to push
through the hose without pack-
ing out Hose is too restrictive. Thin and mix material thoroughly to a lower
viscosity if material supplier allows.
Use a pump system priming fluid (dish soap
or slicking agent) to wet out the system.
Reduce length and/or increase diameter of
hose.
Electric motor will not start or
stops during operation Loose connections. Check connections in electrical enclosure.
Check for correct voltage supply at the dis-
connect and VFD terminals L1, L2, L3.
Motor overload relay trips. Turn power disconnect switch to OFF and
wait one minute for VFD to reset. Allow the
motor to cool if conditions occur frequently.
See “VFD overload fault,” below, for possible
causes.
VFD overload fault The VFD detects a motor over-
load due to motor slowing down
under a high current condition. Reduce motor load.
Lower pressure.
Reduce length and/or increase diameter of
hose.
Water Pump will not run Extended period of time without
use. See Startup After Extended Storage , page
18.
Not properly winterized. If any water pump system components are
damaged, replace as necessary or see
Startup After Extended Storage , page 18.
Problem Cause Solution