TE-WILBUR OPERATIONS MANUAL REV 002.22 4/27/2017
Tisch Environmental 1-TSP-AND-PM10 email@example.com www.tisch-env.com Page 117 of 185
13.5 Sample Pump Maintenance
The sample pump used in TE-Wilbur is a single head diaphragm pump that is
powered by a 24VDC brushless motor.
Pump rebuilds are recommended every 3,000 hours of pump operation or
when the pump is making extreme noises or is not pumping the correct air
The part numbers for the pump are as follows:
TE-W-300 Entire sample pump with brushless 24VDC motor and
single head diaphragm pump.
TE-W-303 Pump rebuild kit that includes the single head
diaphragm pump housing assembly, diaphragm
replacement, o-ring, stainless washer and flat-head
Removing the sample pump
The sample pump can be removed by following these steps:
WARNING – Before opening covers to perform maintenance, ensure unit is
powered down completely. To power down completely, remove mains power
and disconnect the battery at:
1. Remove the lower front plate using a phillips screwdriver.
2. Unplug the pump control cable from the pump control circuit board,
noting the direction of the connector onto the board.
3. Unscrew the two screws holding the sample pump plate into the side of
the internal side plate.
4. Remove the pump and pump plate, noting the slot the pump plate end