Page 111 - Webster Service Manual

106
MOTOR HORSEPOWER (1725 RPM STANDARD)
No.
Description
25
.25
HP
33
.33
HP
50
.50
HP
75
.75
HP
100
1.0
HP
150
1.5
HP
200
2.0
HP
300
3.0
HP
= only available in 115V or 230V single phase
MOTOR PHASE
Code
Description
A Single Phase / 60 cycle / 115/208/230 VAC
B Three Phase / 60 cycle / 208 / 230 / 460 V AC
X Consult factory for other types
MOTOR ENCLOSURE
Code
Description
T
TEFC Std/ thru 2 HP
O
OPDP Std. over 2 HP
E
Explosion Proof
SPMB Ordering Code
SPMB 50 A T 18BR DM
1
1
2
3
2
3
4
5
When sizing SPMB units, remember that the pressures
indicated are at the pump outlet.
All pumps relying on atmospheric pressure to push the
fuel oil into them are subject to cavitation. As fuel viscos-
ity (thickness) increases, the tendency for cavitation
becomes greater. Therefore, it is best to mount the pump
at the base of the tank and to use the largest diameter ,
shortest length, and straightest inlet possible.
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