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Maintenance
8. Close the Innova housing and re-install batteries.
CAUTION
Some toxic gas sensors require up to 15 minutes to stabilize, after
you install the batteries. If your Innova includes a toxic gas
sensor(s), do not turn on and use the Innova during this period. If
the unit is started up immediately after installing batteries, the
“BIAS” message may appear, see Chapter 6, Maintenance, for
instructions on installing or recharging batteries.Calibrate the
Innova before you use it again.
Replacing the Pump
CAUTION
To avoid damage to internal circuitry, remove the batteries before
opening main housing.
1. Turn off the Innova, then separate the halves.
2. Locate the pump in the flow block, see Figure 6-2.
3. Disconnect the pump wire connector from the main board socket
labeled
PUMP
.
4. Remove the nut that secures the pump bracket to the pump, then
remove the bracket.
5. Remove the pump from the flow block by rocking it back & forth.
CAUTION
When you insert the new pump, do not place pressure on the
pump motor. The pump motor is the dark-colored circular
component at the top of the pump.
6. Before installing the new pump, apply a thin film of petroleum jelly
lubricant or O-ring grease to the outside of the barbs. Be careful not to
get lubricant into the end of the barbs, as this could clog the pump.
CAUTION
Do not use lubricant that contain silicone, as this can poison the
combustible sensor.
7. Place the pump bracket in its previous position, then secure the bracket
to the pump with the nut you removed in step 4.
8. Reconnect the pump wire connector to the main board socket labeled
PUMP
, close and secure the Innova housing, and re-install batteries.
