Teledyne Laars Hi-E EPH 300, Руководство пользователя

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To test the ignition control:
1. Turn the heater on and observe the ignition
sequence.
2. If the igniter doesn’t glow, turn the power off and
disconnect the igniter from the ignition control.
3. Connect the leads of the voltmeter to the igniter
and igniter/120 terminals of the ignition control.
4. Set the voltmeter on the AC scale with a range of
at least 150V.
5. Turn the heater on.
6. Turn the temperature control knob all the way to
the right. After about 15 seconds, the voltmeter
should read about 120V.
7. If the voltmeter does not read voltage, replace the
ignition control.
3B-5. Testing the Igniter
If there is proper voltage, but the igniter does not
glow, the igniter may be open. To test the igniter:
1. Switch the volt-ohmmeter to read resistance or
ohms, on a range which can read from zero to
about 500 ohms.
2. With the igniter unplugged from the ignition
control, connect the leads of the ohmmeter to the
ends of the igniter wiring (see Fig. 11). A cold
igniter should have resistance in the range of 50 to
400 ohms.
3. If the reading is above or below the range of 50 to
400 ohms, replace the igniter.
Figure 10. Adjusting the Pressure Switch
6. Turn pump ON. If pressure switch does not open,
turn pump OFF and repeat step 5. When pressure
switch opens, go to step 7.
7. Slowly turn the adjustment clockwise until the
pressure switch closes.
8. Then slowly turn the adjustment counterclockwise
until the pressure switch opens again.
9. Turn the pump OFF and ON to check the adjust-
ment. Pause after each attempt. The pressure
switch should open immediately after the pump
stops.
10. Reconnect wires to the pressure switch.
11. After pressure switch is adjusted, the rise should
be taken to verify water flow.
12. Turn the heater ON following the instructions
found on the inside of the heater.
13. Set the temperature control to the desired tempera-
ture.
14. If a satisfactory adjustment cannot be made,
contact a Teledyne Laars representative for
assistance.
3B-4. Testing the Ignition Control
Caution
The ignition control and igniter operate on
120V power. Keep this in mind while
servicing the heater, and take care to avoid
electrical shock.
Figure 11. Igniter Resistance Test