background image

WNS Series horizontal Oil-fired (Gas) Boiler

 

 

 

-8- 

Na

3

PO

4

·

12H

2

2

3

Note:   

a.

 

The medicine quantity is calculated according to 100% purity. 

b.

 

If no Na

3

PO

4

·

12H

2

O, can use Na

3

PO

4, 

but the quantity should be 1.5 times. 

c.

 

Boiling out for boiler only use Na

3

PO

4, 

should add 6kg Na

3

PO

4

 inside every 1m

3

 water.   

2.3 Before adding medicine, keep water level at limit low water level. The chemical medicines 
should  completely  solved  in  the  water  prior  entering  into  the  boiler,  then  add  into  boiler 
through feeding water pump, keep it close to high water level while boiling out for boiler. 
2.4  At  the  early  time  of  boiling  out,  start  the  burner,  burning  it  at  low  load,  keep  the  steam 
pressure up to 0.35Mpa, the time  is about 12hours. At the end time of boiling out, keep boiler 
pressure at the 75% working pressure, the time is about 12hours. 
2.5  Keep  the  alkaline  of  boiler  water,  analyze  the  boiler  water  periodically,  if  the  alkaline  is 
less than 1.5mol/C, should add medicine. If the alkaline has no change for two times to analyze 
sampling boiler water, can finish the boiling out for boiler. 
2.6  Drain  water  under  pressure  status  after  finish  boiling  out  for  boiler.  Wash  the  water  vent 
vale that contact with the medicine, keep no plugging for blown down valve. 
2.7  After  finish  above-mentioned  process,  inlet  water  and  blow  down  by  turns  until  get 
qualified  water  quality,  then  stop  running  boiler,  open  blown  down  valve,  drain  off  boiler 
water. 
2.8 After the  boiler  become  cold, open manhole, hand-hole, wash  the  inside  surface  of  boiler 
with  clean  water,  check  it  again,  if  find  still  exist  oil  and  dirt,  should  boiling  out  for  boiler 
again according to above-mentioned way. 

  Running boiler 

3.1 Start and running boiler normally. 
3.1.1 Open the air vent valve on the top of boiler or lift the valve core of safety valve. 
3.1.2 Start burner, start running  boiler unit according to the requirements of operation  manual 
of control box. 
3.1.3 Check the water level gauge, if the water level is too high because of heat expansion, can 
drain water through blown valve to the normal water level. 
3.1.4 When steam spurt from the air valve, close this valve, make boiler up pressure slowly. 
3.1.5 Check the feeding water valve, blow down valve, water level gauge, external connecting 
pipeline of drain off valve of water level controller, if they are cold means there are no leakage. 
3.1.6 Open the main steam valve step by step and supply steam. 
3.1.7  In order  to  keep  normal  running  and  safety  for  boiler  unit,  boiler  operator  should  often 
observe  and  see  whether  the  boiler  pressure,  water  level  and  burning  is  in  normal  condition 
during run boiler. 
3.1.8 If boiler unit happens to failure, should stop running immediately and check it. Only after 
remove all failures then can re-start boiler. 
3.2 Stop running boiler 
3.2.1  Push  the  button  of 

burning  stop

,  boiler  stop  burning,  make  all  control  switch  to  the 

position of 

stop

3.2.2 Cut off power switch on the control box. 
3.2.3 Close all the relevant inlet & outlet valves of water pump, oil pump. 
3.2.4 Close steam valve. 
3.3 Adjustment for the quantity of wind and air 
3.3.1 The axis of the air damper at burner air suction side is connected through one piece of rod, 
so as to make air damper run at the same direction and step driven by servo-motor. The span of 
air damper is adjusted through servo-motor. 
3.3.2 The span of gas butterfly valve should be same step with air damper, its micro-adjustment 

Summary of Contents for WNS Series

Page 1: ...l Gas fired Oil Boiler ZhangjiagangWilfordThermalTechnology Co Ltd Please read this manual carefully before using this machin Only qualified workers can operate this machine If the operation method is...

Page 2: ...ler structure 5 Boiler work principle 7 Operation Manual of Gas Fired Boiler 7 Operation requirements 7 Maintenance of boiler 11 Inspection hydraulic testing for pressure parts 12 Attention for users...

Page 3: ...appendix list product quality certificate one copy Installation description Preparation work before installation Check the completeness of the boiler accessories according to the packing list and the...

Page 4: ...drawings Water pump is connected with water tank if user has additional requirements can provide spare water pump 4 2 Safety valve must be assembled after hydraulic testing and connected to the tube f...

Page 5: ...r boiler water level indication and for the supervision by boiler operator The water level controller is used for transmitting the value of boiler water level The control system will control the runni...

Page 6: ...ecause of some reasons the photo resistance has no sense of light stop burning and send out acoustical light alarm continue post purging for gas fired boiler then stop running boiler Check and find ou...

Page 7: ...ill feed water into the boiler so as to keep it in the normal water level The above mentioned process continues steam will continuously produced by heating the water by absorbing the afterheat of firi...

Page 8: ...iler again according to above mentioned way Running boiler 3 1 Start and running boiler normally 3 1 1 Open the air vent valve on the top of boiler or lift the valve core of safety valve 3 1 2 Start b...

Page 9: ...warming tube should be according to the length diameter of pipeline steam temperature and so on In generally it should not less than ten minutes After the tube is heated open the main steam valve slow...

Page 10: ...it quality 6 9 The photoresistance should be removed for examination testing every three month measure the values of resistance of bright dark Photoresistance type MG41 100A Rated power capacity 100M...

Page 11: ...etter W means week Letter M means month Letter S means season Letter Y means year Blow down of boiler In generally the feeding water contains mineral matter when the water enters into boiler and after...

Page 12: ...nance if less than one month should use wet maintenance 4 1 Dry maintenance Stop running boiler drain off all boiler water remove all dirt inside boiler and clean it bake it by faint fire close all ha...

Page 13: ...ter dropping to working pressure During inspection the pressure should kept no change If find any leakage should well make record for later repairing when the pressure drop to atmosphere After hydraul...

Reviews: