BUSCH COBRA - Troubleshooting; Troubleshooting Safety; Machine Does Not Start Issues

12 | Troubleshooting
42 | 52 Instruction Manual COBRA NC 2500 B WCV_EN_en
12 Troubleshooting
DANGER
Live wires.
Risk of electrical shock.
● Electrical installation work must only be executed by qualified personnel.
CAUTION
Hot surface.
Risk of burns!
● Prior to any action requiring touching the machine, let the machine cool down first.
Problem Possible Cause Remedy
The machine does not start. The motor is not supplied with
the correct voltage.
● Check the power supply.
The rotors are jammed or
seized.
● Turn the screw rotors manu-
ally from the rotor access
plug (PMR).
● Repair the machine (contact
Busch).
Solid foreign matter has en-
tered the machine.
● Remove the solid foreign
matter or repair the ma-
chine (contact Busch).
● Install an inlet filter if neces-
sary.
The resistance thermometer
(TSA) reached the switch point.
● Let the machine cool down.
● See problem “The machine
runs too hot”.
Corrosion in the machine from
remaining condensate.
● Repair the machine.
● Check the process and fol-
low the recommendation in
case of Conveying Condens-
able Vapors [➔27].
The motor is defective. ● Replace the motor.