Grizzly G0442 - Manual (Page 16)

-14-
Model g0442/g0601 (Mfg since 3/12)
correcting phase polarity (g0601
only)
this subsection is only provided for troubleshoot-
ing. if you discover during the test run that the
machine will not operate, or that the impeller spins
backward, the power connections may be wired
out-of-phase. Without the proper test equipment
to determine the polarity of the power source legs,
wiring machinery to 3-phase power may require
trial-and-error. Correcting phase polarity is simply
a matter of reversing the positions where two of
the incoming power source wires are connected
inside the control box.
NOTICE
if this machine is wired out-of-phase, the
motor and impeller will spin in the wrong
direction. the efficiency of the dust col-
lector will be greatly reduced and will not
provide the rated cfm. you must make
sure the motor is spinning in the correct
direction before placing the machine into
full operation. perform Step 10 of the test
run on Page 30 to make sure the machine
is correctly wired.
to correct phase polarity:
1. disConneCt MAChine FroM poWer!
2. open the control box and swap the connec-
tions of any two incoming hot wires from the
power source (see
figure 4).
A1
Ground
2T1 6T3 14NO 4T2
1L1 5L3 13NO 3L2
NHD C-18D
2T1 4T2 6T3
98 97
A2
96
O R
95 11
12
13
14
NHD NTH-14
A2
figure 4. Wire connections to swap to correct
phase polarity.
swap Any
two
of these
Wires
3. secure the control box cover, then re-connect
the machine to power.
4. perform step 10 of the test run on page 30
to confirm that the power connections are
correct.
— if the motor and impeller are still rotating
in the wrong direction, contact our tech
support at (570) 546-9663 for assistance.