Chemglass AF-0349 Welch Vacuum Pump - Manual (Page 6)

6
1.05 Electric Power
For Model 8905
Compare the pump motor rating, printed on a label on the side of the motor and on the serial number tag, to the
power source, to be sure they agree in voltage, phase, and frequency. Pump installation must comply with local
electrical codes which dictate appropriate protection devices such as fuses or circuit breakers. Know the location
of the circuit breaker protecting the electrical outlet for the pump.
For Models 8907, 8912 & 8917
Compare the pump motor rating, printed on a label on the side of the motor and on the serial number tag, to the
power source, to be sure they agree in voltage, phase, and frequency. Pump installation must comply with local
electrical codes which dictate appropriate protection devices such as fuses or circuit breakers. Know the location
of the circuit breaker protecting the electrical outlet for the pump.
Only the Models 8907C, 8912C and 8917C have “global motors” that operate over a wide range of voltages
(100-120V, 200-30V). They also operate at frequencies of 50Hz and 60 Hz. Power is single phase.
For Models 8920 & 8925
Compare the pump motor rating, printed on a label on the side of the motor and on the serial number tag, to the
power source, to be sure they agree in voltage, phase, and frequency. Pump installation must comply with local
electrical codes which dictate appropriate protection devices such as fuses or circuit breakers. Know the location
of the circuit breaker protecting the electrical outlet for the pump.
Identification Symbols:
CAUTION
Make certain the power settings on the pump match your power
source before attempting to operate the pump. (Additional
information can be found in section 4: Motor Power).