Gas Sampling Probe H: Replacing Membrane Pump Membranes - ABB SCK System Manual

Gas sampling probe H: Replacing membrane pump membranes

Maintenance interval
Safety
measures
Tools required
Requirements
Instructions
42/23-81 EN Rev. 4
 twice yearly
Always take the following safety measures when performing this work:
 Wear the general protective equipment.
 Turn the service switch to ON and secure the service switch against unauthor-
ized switching (with a padlock).
 Additionally press the EMERGENCY STOP switch.
 Do not enter the danger area around the retractor until it is at standstill and the
warning lamps and buzzer are off and the flap valve is closed.
 Do not perform the work until the gas sampling system has cooled down.
Explanation of safety measures: Safety regulations for maintenance work on page
156.
 Control cabinet key to open the control cabinet
The following conditions must be met:
 The service switch is in the ON position, the gas sampling probe is retracted
from the kiln (see Operating the service switch on page 159).
 The EMERGENCY STOP switch is pressed.
Perform the following steps to replace the structural diaphragm of the pre-suction
pump -M71:
Step
Open the control cabinet.
1
Power off pump at the circuit breaker -F34.
2
Clean outside of pump housing.
3
Unscrew the four screws to open the pump housing.
4
Detach the pump tubes, remove the pump -M71 and clean it exter-
5
nally.
System Manual SCK Gas Sampling System
Procedure
179