Removing The Exchanger; After All Repairs Or Maintenance - Harsco Industrial P-K THERMIFIC N700 Installation & Owners Manual

10. Carefully remove the burner.
11. Wash the burner with water. DO NOT wipe or brush the outside of the burner.
12. Check that the ceramic portion of the ignition electrode is not cracked. Verify that the three-armed
spider is on the electrode.
13. Check the position of the ignition electrode, it should be flush with the end of the pilot tube. Check the
tightness of the electrode clamp. It should be secure and snug. Do not over tighten or the electrode
will crack.
14. Use a soft, clean cloth to remove accumulated contaminants from the UV scanner glass lens.
15. Before re-installing the burner, check the cleanliness of the exchanger. Remove the front aluminum
panel and examine the exterior of the tubes as well.
5.3 R E
EMOVING THE
This work should only be performed by qualified service personnel.
1. Remove the burner as above.
2. Remove the front doors by pulling forward and upward.
3. Remove the top panel of the inner cabinet.
4. Close the isolation valves to the system.
5. Drain the boiler.
6. Disconnect the supply and return lines.
7. Remove the water outlet manifold containing the temperature-pressure indicator, relief valve, and the
water flow switch (on the D series units disconnect at the grooved pipe coupling [Victaulic]).
8. Remove the nuts and bolts from the flanges of the inlet and outlet nozzles at the rear of the outer
casing.
9. Remove the exchanger by sliding it forward and out of the cabinet.
NOTICE! The inner and outer cabinets are separate parts and reassembly is easier if the inner cabinet
and exchanger are removed together as one unit. When re-assembling, reseal the top of inner cabinet
with aluminum tape as needed.
5.4 A A R
FTER LL EPAIRS OR
1. Follow "Pre-Start Check List" (Section 3.8) and all "Safety Checks" (Section 3.9).
2. Verify proper operation after servicing.
3. Perform combustion check.
4. Check gas pressure and adjust gas flow if necessary. Check air pressure and adjust air flow if
necessary (refer to Section 3.10.3.).
XCHANGER
The heat exchanger is heavy; use proper lifting equipment and techniques.
M
AINTENANCE
P-K THERMIFIC
48
®
Gas-Fired Boiler