Section Iv Technician Service; General; Maintenance; Heat Exchanger Inspection And Cleaning - Hayward H135ID Service & Installation Manual

SECTION IV. QUALIFIED TECHNICIAN – MAINTENANCE & SERVICING

GENERAL:

ATTENTION: Only qualifi ed service technicians, with appropriate test equipment, should be allowed to
service the heater. Bear in mind that all of the components that comprise the system have an effect on heater
operation. Before proceeding with heater related troubleshooting tips covered in Section V, be certain that
the pump is operating correctly, the fi lters and strainers are not blocked, the valves in the piping are properly
positioned, and the time clocks are properly set.

MAINTENANCE:

The following inspection procedures are recommended to be performed as part of annual heater mainte-
nance and to ensure safe operation.
1. Heat exchanger
2. Main burner fl ame patterns
3. Main burner orifi ces
4. Operating controls

HEAT EXCHANGER INSPECTION AND CLEANING:

Remove the Top Jacket and Flue Transition Top Cap
exchanger for soot accumulation. If soot has accumulated, it must be removed
procedure:
1. Before beginning, be aware that it is not necessary to remove the water header from the heat ex-
changer.
2. Turn pump, main gas valve, and heater power OFF.
3. Remove Heat Exchanger Cover (see Figure 2).
4. Disconnect the wires on the exhaust gas temperature limit.
5. Remove Flue Collector Side Panels.
6. Disconnect the wire connecting the heater wire harness to the heat exchanger header. The wire is
located on the water pressure switch on the top of the header.
7. Lift Heat Exchanger Assembly out of heater.
8. Using a soft-tipped brush such as a paint brush, apply a degreaser to the entire heat exchanger sur-
face (top and bottom). Allow the heat exchanger to sit for a period of time to allow the degreaser
to loosen the soot. Wash the heat exchanger using a garden hose ensuring both the top and bottom
WARNING: EXPLOSION HAZARD Do not attempt to repair any components of
this heater. Do not modify the heater in any manner. To do so may result in a mal-
function that could result in death, personal injury, or property damage. Check with
the consumer to see if any part of the heater has been under water. Replace any part
of the control system and any gas control that has been under water.
WARNING: BURN HAZARD Do not use a wire brush to remove soot from the
heat exchanger. This could cause a spark and ignite the gases trapped within the soot.
(see Figure 2) and inspect the external surfaces of the heat
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-355-7995
by following the recommended
www.hayward-pool.com
29