FLK Gas Sampling System - MPIP - Free

More documents

Recommendations

Info

SQ253 Valve Combination 4.6 Low-pressure pressure switch When the filter or probe is contaminated or blocked, a negative pressure is built up by the measuring gas pump. The electrical contact device integrated into the pressure switch function for monitoring and starting the flushing process. The magnetic snap-action contact is suitable for harsh applications which place high demands on switching capacity. The low-pressure pressure switch is largely maintenance-free. With an erroneous indication or for no indication, the connecting hose should be cleaned or, if necessary, the complete pressure switch replaced. 4.7 Electrically operated compressed air valve ( option ) This compressed air valve is included when a compressed air motor is used for the emergency withdrawal on the withdrawal device. When the voltage is switched on, the solenoid is energized and the valve switches. The compressed air supply to the compressed air motor is shut off. The control is implemented directly from the control unit. This Type MCH-3-1/2 can be converted by rotating the seal under the cover to the other valve version Type MOCH-3-1/2. 4.7.1 Replacing the valve • Pull off the cable head after loosening the screw. • Loosen the screwed joints on the housing. • Pull off the hose from both sides after opening the hose clamps. • Remove the valve. • Unscrew the screw-in hose nozzles and the reducing unions. • Before fitting the new valve Note: Pay attention to voltage and type of current according to the nameplate. • Clean the hose nozzles and use PTFE tape to seal the thread. • Screw in the hose nozzles into the new valve. • Assembly takes place in the reverse sequence. 4.7.2 Cleaning a valve: • Pull off the cable head after loosening the screw. • Loosen the upper nut on the solenoid coil. • Remove solenoid coil. • Remove the cover after loosening the two screws. • Remove the plunger and diaphragm. Clean and replace damaged parts if necessary. • After removing the snap-ring on the bottom, the pilot valve can be removed. • Clean the valve body and replace any damaged parts. • Assembly takes place in the reverse sequence. Note: Pay attention to the tightening torque of 1Nm for the cable head. 4.7.3 Faults: • Check connections, operating pressure and voltage. Solenoid does not pull in: • Short circuit or coil interruption. • Core or core aperture contaminated. • Jammed core causes coil overheating on alternating current. Copyright ® SIEMENS Page 72 04/04
SQ253 Valve Combination Leaky valve: • Procedure as in Section 4.7.2 or replace the valve. Fig. 7 Electrically operated compressed air valve 4.8 Pneumatically operated compressed air valve ( optional ) This compressed air valve is only fitted when a compressed air motor is being used for the emergency withdrawal on the withdrawal device. The valve has, depending on the choice of connections, the function "no throughput when unenergized" (11 blocked, 2 to 33 vented) or the function "throughput when energized (11 to 2, 33 blocked). The valve switches only for the duration of the signal on terminal 110 or 12. 4.8.1 Replacing the valve • Loosen the screwed joints on the housing. • Pull off the hose after opening the hose clamps on both sides. • Remove the valve. • Unscrew the screw-in hose nozzles and the reducing unions. • Check the type of valve before fitting the new one. • Clean the hose nozzles, use PTFE tape for sealing the thread. • Screw in the new valve. • Assembly takes place in the reverse sequence. Copyright ® SIEMENS Page 73 04/04
Page 1:
FLK Gas Sampling System Operating M
Page 4 and 5:
SQ250 FLK Gas Sampling System 1. In
Page 6 and 7:
SQ250 FLK Gas Sampling System 1.5 M
Page 8 and 9:
SQ250 FLK Gas Sampling System Fig.
Page 10 and 11:
SQ250 FLK Gas Sampling System 2. In
Page 12 and 13:
SQ250 FLK Gas Sampling System If a
Page 14 and 15:
SQ250 FLK Gas Sampling System 2.7 C
Page 16 and 17:
SQ250 FLK Gas Sampling System 2.10
Page 18 and 19:
SQ250 FLK Gas Sampling System • S
Page 20 and 21:
SQ250 FLK Gas Sampling System If fa
Page 22 and 23: SQ250 FLK Gas Sampling System 4. Ma
Page 24 and 25: SQ250 FLK Gas Sampling System The p
Page 26 and 27: • When the pump has switched off,
Page 28 and 29: SQ250 FLK Gas Sampling System 4.5 M
Page 30 and 31: Copyright ® SIEMENS Page 30 04/04
Page 32 and 33: SQ251 FLK Gas Sampling Probe Note:
Page 34 and 35: SQ251 FLK Gas Sampling Probe 1.4 Co
Page 36 and 37: SQ251 FLK Gas Sampling Probe 2 Inst
Page 38 and 39: SQ251 FLK Gas Sampling Probe 2.3 Co
Page 40 and 41: SQ251 FLK Gas Sampling Probe 3 Oper
Page 42 and 43: SQ252 Electrically Heated Dedusting
Page 52 and 53: Siemens SQ252 Electrically Heated D
Page 54 and 55: Siemens SQ252 Electrically Heated D
Page 56 and 57: Siemens SQ253 Valve Combination Cop
Page 58 and 59: Siemens SQ253 Valve Combination Con
Page 60 and 61: Siemens SQ253 Valve Combination 1.3
Page 62 and 63: SQ253 Valve Combination 1.5 Mode of
Page 64 and 65: SQ253 Valve Combination 2. Installa
Page 66 and 67: SQ253 Valve Combination 3. Operatio
Page 68 and 69: SQ253 Valve Combination 4.3 Compres
Page 70 and 71: SQ253 Valve Combination 4.4 Condens
Page 74 and 75: SQ253 Valve Combination 4.8.2 Clean
Page 76 and 77: SQ254 Heat Exchanger Note: We would
Page 78 and 79: SQ254 Heat Exchanger 1.4 Function d
Page 80 and 81: SQ254 Heat Exchanger 2. Installatio
Page 82 and 83: SQ254 Heat Exchanger 3.3 Adjustment
Page 84 and 85: Siemens Copyright ® SIEMENS Page 8
Page 86 and 87: Siemens SQ255 Control Unit Note: We
Page 88 and 89: Siemens SQ255 Control Unit 1.4 Cons
Page 90 and 91: SQ255 Control Unit 2. Installation
Page 92 and 93: Copyright ® SIEMENS Page 92 04/04
Page 94 and 95: SQ256 Retraction Device Note: We wo
Page 96 and 97: SQ256 Retraction Device 1.4 Constru
Page 98 and 99: SQ256 Retraction Device 2 Installat
Page 100 and 101: SQ256 Retraction Device The probe c
Page 102 and 103: SQ256 Retraction Device 4. Maintena
Page 104 and 105: SQ256 Retraction Device 4.3 Chain w
Page 106 and 107: SQ256 Retraction Device Manufacture
show all

FLK Gas Sampling System - MPIP - Free

Create successful ePaper yourself

Delete template?

Save as template?