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TROUBLESHOOTING 

 
IF THE COOLER FAILS TO WORK

 
Check the following points before calling for service: 
 

1.  That the instructions for starting the cooler have been followed. 
 
2.  The cooler is level. 
 
3.  If the cooler fails to work check: 

a)  That the gas bottle is not empty. 
b)  That all LP gas valves are open. 
c)  That the regulator is not faulty. 
d)  If another appliance is connected to the same supply, check if it works properly. 

 
IF THE COOLER IS NOT COLD ENOUGH IT MAY BE BECAUSE: 
 

1.  The ventilation of the absorption unit is inadequate.  Allow at least 100mm around 
 

the back and sides of the cooler and 600mm above. 

 
2.  The evaporator is frosted up – see Defrosting. 
 
3.  The gas pressure is incorrect – check the pressure regulator at the gas cylinder or 

the orifice (7) of the burner. If the orifice (7) is blocked, remove orifice, clean with 
alcohol or other solvent and blow through with compressed air.  Never use a piece of 
wire or a pin. Check that you have the correct regulator for the cylinder (2.8-3.0 kpa 
butane, 3.7 kPa propane).  Check that you have not run out of gas. 

 
4.  The ambient temperature is too high. 
 
5.  Too many products are loaded into the cooler at one time. 
 
6.  The lid is not properly closed or the lid seal is defective. 
 
7.  The baffle has not been inserted into the chimney.  (factory fitted). 
 
8.  The absorption unit is leaking.  A leak can be determined in the case of a visible leak, 

by traces of yellow deposit at the point where the ammonia is escaping.  If there

 

      is a leak on the evaporator inside the cabinet, a smell of ammonia may be noticeable.  

If a leak is detected, under NO circumstances should you try to repair it, as the unit is 
pressurized with hydrogen and may explode if welding is attempted on the leak.  Call a 
qualified  service  technician.    Turn  off  the  gas  or  electric  supply,  and  then  empty  the 
cooler. If it is in a small room or in sleeping quarters or the smell of ammonia persists 
remove the appliance.  Do not try to use it.

 

 
9.  If the flame fails to stay alight after releasing the fail-safe valve knob according to the 
 

instructions, there may be two faults, these being: 

 

a)  The magnet in the fail-safe valve is faulty. 
b)  The thermocouple feeler point (8) may not be in the flame properly. 
 

 

To rectify this, loosen the bottom nut to the feeler point and push forward until the 

 

point is over the burner, and then tighten the top nut on the feeler point. 

 

Repeat starting instructions. 

 

Repeat lighting procedure.  If still fails contact a service agent as the valve may be 

 

faulty or the flame detector misplaced. 

 
10. If the cooler is still not working properly, call a qualified service technician to repair 
 

it. 

 
 

Summary of Contents for GR250BC

Page 1: ...INSTRUCTIONS ZERO MODEL GR250BC L P Gas Double Lid Bottle Cooler ZERO APPLIANCES PTY LTD Cat I3 28 30 37 I3B P 30 WARNING THIS APPLIANCE MUST BE EARTHED ENSURE THAT THE GAS SUPPLY HOSE IS NOT IN CONTA...

Page 2: ...pane mixtures at 3 0 kPa Declared Rate Injector size 0 42mm diameter marked 13 or 0 Gas consumption 34 2 g h Electrical Supply optional 230V 0 320kW WARNING THIS APPLIANCE MUST BE EARTHED ENSURE THAT...

Page 3: ...be installed in accordance with the requirements of SANS 10087 1 and any fire department regulations and or local bylaws applicable to the area If in doubt check with the relevant authority before und...

Page 4: ...n 15 seconds see Users note BURN BACK FIRE IN BURNER TUBE OR CHAMBER In the event of a burn back where the flame burns back to the jet immediately turn off the gas supply at the control valve on the p...

Page 5: ...e Press A again 5 Keep the knob A pressed in for a further 15 seconds then release it If the flame goes out repeat steps 2 3 and 4 until the flame stays alight To terminate the gas operation turn off...

Page 6: ...l is defective 7 The baffle has not been inserted into the chimney factory fitted 8 The absorption unit is leaking A leak can be determined in the case of a visible leak by traces of yellow deposit at...

Page 7: ...hich the lid is opened and the volume and concentration of products stored in it 10 You avoid packing products in too tightly air must be able to circulate freely 11 For the safety of children keep th...

Page 8: ...w used for admitting the ammonia hydrogen filling charge to an absorption unit is fitted to the unit s reservoir It is a strictly applied provision of the guarantee extended on the unit to the custome...

Page 9: ...burner will not stay alight check position of the flame detector head and the functioning of the safety valve If not cold enough Check through points listed under Troubleshooting In the unlikely event...

Page 10: ...SUPPLY HOSE IS NOT IN CONTACT WITH OR NEAR THE BURNER BOX 1 SANS BRASS HOSE TAIL 2 GAS THERMOSTAT 3 CAPILLARY WIRE 4 FLAME FAILURE DEVICE 5 M10 NUTS 6 M10 x 3 8 UNF JET HOLDER 7 M10 x 1 JET RETAINER...

Page 11: ...Made in South Africa Pty Ltd...

Page 12: ......

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