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3.4 

INJECTORS

 

To  access,  remove  burners  as  detailed  in  Section  3.3.1.  Undo  injectors  using  a  spanner.  Soak  in  a 
suitable  solvent to remove debris and wipe with a soft rag.

 

DO  NOT  USE  metal  implements  to  clear  an  injector  orifice. Check seals are clean before refitting 
and that this  is carried out in the correct order. Refer to Section 1.6.

 

After   replacement,   check   burner   performance   is   in  accordance with Sections 1.8 and 2.3.2.

 

3.5 

THERMOCOUPLE

 

To remove, proceed as follows -

 

a)  Remove control panels as detailed in Section 3.2.

 

b)  Undo tubing nuts at pilot assembly and gas control.

 

c)  Manoeuvre thermocouple clear.

 

d)  Replace in reverse order.

 

When  replacing  a  thermocouple,  coil  excess  in  a  similar  manner  to  original  and  take  care  not  to 
bend  capillary  sleeving to less than 12mm radius.

 

Take care not to overtighten valve connection.

 

3.6 

GAS TAP

 

To access, remove control panel assembly as detailed in  Section 3.2.

 

To remove a gas control, proceed as follows:-

 

a)  Undo nut that secures burner feed pipe to control.

 

b)  Undo pilot tubing nut.

 

c)  Remove fixings that secure control to float rail.

 

d)  Manoeuvre control to enable thermocouple removal.

 

e)  Withdraw control.

 

When  replacing  a  control,  ensure  sealing  gasket  is  in  a  serviceable  condition  and  check  gas 
tightness.

 

Set/check LOW FLAME as detailed in m) - q) below.  To clean and lubricate a tap, proceed as follows:-

 

Plugs  and  bodies  are  machined  in  pairs  and  parts  are  not interchangeable. Always clean one tap at 
a time.

 

f) 

Remove fixings which retain front securing plate whilst  holding plate against internal spring pressure.

 

g)  Carefully withdraw plate with operating spindle.

 

h)  Withdraw  exposed  rod,  spring,  brass  washer  and  sealing washer. Take care not to lose any of 

these  small parts.

 

k)   Withdraw  plug  and  clean  with  a  soft  rag  at  the  same  time as control body mating. Ensure grease 

does not  block plug hole or tap body holes - this will affect gas  flow. Regrease plug sparingly with 
an approved heat  resistant grease. Re-assemble strictly in reverse order  and  take  care  with  central 
pin  assembly.  i.e.  fit  pin  spring  first  followed  by  brass  washer  and  sealing  washer.  When 
inserting  into  plug,  ensure  sealing  washer locates snugly in recess at plug hole bottom.

 

When  re-assembling  operating  spindle,  the  niting  pin  should  engage  within  plug  slot.  When 
replacing  control,  ensure  sealing  gasket  is  in  serviceable  condition  and  check gas tightness. Take 
care not to bend thermocouple  capillary to less than 12mm radius.

 

m)  LOW  FLAME  setting  can  be  adjusted  by  means  of  a  screw on control front 

(refer to Figure 2)

. If 

necessary,  adjust flame by following procedure:-

 

n)  Turn adjusting screw fully anti-clockwise.

 

p)  Light burner and turn to LOW setting.

 

q)  Observe  flame  and  if  necessary  turn  screw  very  slightly  to  obtain  a  satisfactory  condition.  Turn 

anticlockwise  to  increase  flame  and  vice-versa.  Aim  to  achieve  80%  of  maximum  flame.  On 
multiple  burner  units,  all  burners  must  be  adjusted  in  a  similar  fashion.  Check  basic  flame 
stability and that cross-lighting at low flow is satisfactory.

 

 

 

Summary of Contents for G3425

Page 1: ...n these instructions should be left with the Engineer in Charge for reference during servicing Further to this The Users Instructions should be handed over to the User having had a demonstration of th...

Page 2: ...nit Light bulbs Re installing vacuum in kettle jackets Replacement of grill burner ceramics when damage has been clearly caused by misuse Where an engineer finds no fault with a product that has been...

Page 3: ...th Recommendations for Ventilation of Catering Appliances are given in BS5440 2 For multiple installations the requirements should be added together Installation should be made in accordance with loca...

Page 4: ...0 G3925 Chargrill 300 300 300 G31225 Chargrill 300 300 300 300 G31525 Chargrill 260 260 260 260 260 Model No of burners 1 2 3 4 5 G3625ES Chargrill 240 240 G3925ES Chargrill 240 240 240 G31225ES Charg...

Page 5: ...plied must be fitted adequately supported and positioned accessibly to facilitate adjustment Never fit a governor to a Propane appliance Purge installation and check gas tightness see IGE UP 1 2 3 PRE...

Page 6: ...ections 1 5 3 and 3 4 b Change gas valve Refer to Section 3 6 c Remove governor when converting to PROPANE GAS Fit governor when converting to NATURAL GAS d Check pressure settings Refer to Sections 1...

Page 7: ...ot interchangeable Always clean one tap at a time f Remove fixings which retain front securing plate whilst holding plate against internal spring pressure g Carefully withdraw plate with operating spi...

Page 8: ...ction 3 2 To remove and replace a Disconnect igniter lead at rear of igniter b Undo panel securing nut and remove igniter c Replace in reverse order 3 9 ELECTRODE To access pilot remove control panel...

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