RAMVAC BISON, Service Instruction

Page: 14 / 16

Page 14
Vacuum Controller
Main Air Filter
Filtrols - (Main Air
Filter inside)
Note: Contents inside
motor starters will vary.
For simplicity, not all motor
starter wiring is shown.
Switch any two of these wires to
reverse rotation.
Standard Models
Bison and Bulldog Models
Motor Starter
Filtrols Intake
Coupling
Page 14
3 PHASE MOTOR START-UP
Motor Overload
Filtrols
3 Phase Motor Start-up
How to properly start a 3 phase unit the first time or after
changes to motor, motor starter or Electrols.
1. Turn power on at disconnect.
Caution: Pump has 50% chance of rotating backwards.
DO NOT ALLOW debris to enter pump.
2. Check for correct pump rotation:
a.
Standard Models:
i. Loosen Filtrols intake coupling and remove line.
ii. Place hand by Filtrols intake to determine airflow.
b.
Bulldog and Bison Models:
i. Remove vacuum controller and main air filter from power unit.
ii. Place hand in Filtrols close to pump inlet to determine airflow.
3. Run vacuum unit long enough to determine airflow direction, then
turn pump off.
a. If air blows out of inlet pipe:
i. Reverse any two motor wires on motor overload.
ii. Repeat step 3.
b. If air sucks into inlet pipe:
i. Clean any oil or debris out of Filtrols.
4. Complete 3 phase motor start-up
a. Standard Models: Re-install Filtrols inlet line
b. Bulldog and Bison Models: Re-install main air filter and vacuum
controller.