AERCO KC1000 Heater 2002 - Manual (Page 48)

MAINTENANCE
6-6
Figure 6.6
BTU Transmitter Pump Compression Fitting Locations
12. Remove the compression fitting at the top of the impeller housing and remove the impeller housing,
(See Fig. 6.6).
HOT WATER TUBE
COMPRESSION FITTING
BALL VALVE
Figure 6.7
BTU Transmitter Hot Water Tube Disassembly
13. Remove the compression fitting securing the pump outlet tube to the ball valve and remove the pump
outlet tube.
14. Remove the ball valve connected to the hot water tube coming from the top of the shell by loosening
the compression fitting securing it to the hot water tube, (See Fig. 6.7).
15. Loosen the compression fitting at the top of the shell holding the hot water tube, (See Fig. 6.8). Slide
the hot water tube down slightly but do not remove it from the unit. Remove the
16. Inspect all fittings and tubing for blockage due to scale or debris. Clean or replace as necessary.
fitting.
17. Inspect the mixing orifice for blockage or degradation due to erosion, (See Fig. 6.5). Clean or replace
as necessary.
18. The pump impeller may be checked by removing the 4 screws from the cover encasing the impeller in
the housing, (See Fig. 6.9).
HOT WATER
TUBE
COMPRESSION
FITTING