Professional Service (see table 2)
If the SELF HELP checks do not cover the symptom, you should seek professional help. The following additional checklist is provided for the benefit of the qualified engineer.
WARNING: SWITCH OFF THE ELECTRICITY AT THE ISOLATING SWITCH BEFORE REMOVING THE COVER TO MAKE CHECKS.
Table 2
a) | Unit fails to heat the water |
| Check that the water supply is on and that its pressure is | |||||
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| between 0.7 Bar 69kPa (10 psi) and 10.0 Bar 940 kPa (140 psi). | |||
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| Check circuit through solenoid coil. | |||
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| Check circuit through the heating element. | |||
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| Check circuit through float switch. | |||
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| If defective then replace. |
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b) | All the lights are out and the |
| Ensure that the electricity supply is switched on at the isolator. | |||||
| POWER button does not work |
| Ensure that the flying lead to the front cover is connected | |||||
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| properly (see Fig. 5a and Fig. 5b). |
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| Check the supply to the PCB. If supply OK then change PCB. | |||
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c) | Water flows continuously |
| Check that the float switch operates correctly and switches the | |||||
| from the steam vent pipe |
| water solenoid on and off. |
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d) The water tank takes more |
| Check that the water supply is on and that its pressure is | ||||||
| than 20 minutes to fill with |
| between 0.7 Bar 69kPa (10 psi) and 10.0 Bar 940kPa (140 psi). | |||||
| water |
| Check operation of the water solenoid and that water flows | |||||
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| into the tank at a rate between 0.3 Litres/min and 1 Litre/min. | |||
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| Check circuit through the solenoid coil. | |||
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SB2 heat up times |
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Table 3 |
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CONDITION |
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| APPROXIMATE HEAT UP TIME |
| WHAT ELSE HAPPENS | |||
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| 2.5 Litre SB2 | 4 Litre SB2 |
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SB | 2 | is switched on at the local |
| 12 minutes | 18 minutes |
| - POWER light comes on | |
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| - then FULL light comes on | |||||
isolator and the unit is empty |
| (4 mins filling | (5 mins filling |
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| - then TEMPERATURE READY | ||||||
of water. |
| 8 mins heating) | 13 mins heating) |
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POWER button is pressed. |
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| light comes on | ||
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| - then steam comes out of | |||
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| the vent for 30 seconds. |
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SB2 is switched on at the local |
| 8 minutes | 13 minutes |
| - POWER and FULL lights | |||
isolator and the unit is already |
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| both come on. | ||
full of cold water. |
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| - then TEMPERATURE READY | ||
POWER button is pressed. |
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| light comes on. | ||
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| - then Steam comes out of | |||
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| the vent for 30 seconds |
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10
