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10
MOTOR CONNECTION
MOTOR CONNECTION at 208-230 or 460V (E)
WARNING:
Please, pay attention to the indications in case of modifi-
cation of voltage, maintenance, or substitution.
MOTOR CONNECTION at 575V (F)
WARNING:
the motors, manufactured for 575V IE2/Epact voltage,
have the same control box base of the 208-230/460V
motors.
Please pay attention to the indications in case of mainte-
nance or substitution.
REVERSIBLE DIRECTION (G)
WARNING:
If it is necessary to reverse the direction then reverse
the two main supply phases.
ADJUSTMENTS BEFORE FIRST FIRING
Adjustment of the combustion head, and air and gas
deliveries has been illustrated on page 8.
In addition, the following adjustments must also be
made:
-
Open manual valves up-stream from the gas train.
-
Adjust the low gas pressure switch to the start of the
scale (A).
-
Adjust the high gas pressure switch to the end of the
scale (B).
-
Adjust the air pressure switch to the zero position of
the scale (C).
-
Purge the air from the gas line.
Fit a U-type manometer (D) to the gas pressure test
point on the sleeve.
The manometer readings are used to calculate the
MAX. burner power using the diagram on page 6.
Before starting up the burner it is good practice to adjust
the gas train so that ignition takes place in conditions of
maximum safety, i.e. with gas delivery at the minimum.
(D)
(A)
LOW GAS PRESSURE SWITCH
AIR PRESSURE SWITCH
HIGH GAS PRESSURE SWITCH
(B)
(C)
D2368
IE2/Epact
U2
V2
W2
U3
V3
W3
U1
V1
W1
S8379
U2
V2
W2
U3
V3
W3
U1
V1
W1
S8380
~
~
~
~
~
~
460V
208-230V
(E)
S8382
~ ~ ~
575V
(F)
S8381
L1
L2
(G)
Содержание 20011691
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