MACH® Series
Gas-Fired Boiler
Maintenance
Page 30
5.1.4 Semi-Annually (required for boilers
operated year round)
In addition to the recommended monthly service:
1. Clean burner of any accumulated dust or lint. See
Section 5.2 on "Cleaning the Burner."
2. Inspect burner for any signs of deterioration or
corrosion. Replace immediately if deterioration or
corrosion is evident.
Installation and service must be performed by a
qualified installer or service agency who has been
trained on the Patterson-Kelley MACH boiler.
The blower motor is permanently lubricated and does
not require periodic lubrication.
5.1.5 Annually
In addition to the recommended monthly service:
1. Inspect and clean the inlet screen of any
accumulated dust or lint.
2. Check burner and clean off any soot or foreign
material that may have accumulated. See Section
5.2 on "Cleaning the Burner." Check for corrosion
of the burner and its parts. If there is evidence of
deterioration or corrosion, replace immediately.
3. Inspect combustion chamber when the burner is
removed for inspection. Note any signs of
deterioration. Clean as necessary.
4. Inspect and clean heat exchanger. Use vacuum to
remove accumulations from the heat exchanger
pins and surfaces. Clean the casting pins by
flushing with clean water and air drying. Do not
use any cleaning agents or solvents. A nylon
brush may be used in accessible areas.
5. Drain and flush the inside of the heat exchanger as
required (separate from system flush).
6. Examine the venting system at least once a year.
Refer to the vent manufacturer's instructions for
requirements in addition to those listed below.
a. Check all joints and pipe connections for
tightness.
b. Check pipe for corrosion or deterioration. If
any piping needs replacing, do so
immediately.
7. Qualified service personnel should thoroughly
inspect the heating system and correct any
problems prior to re-starting the boiler.
8. Perform combustion analysis and readjust to
manufacturer's specifications as necessary. It is
recommended that a copy of this report be filed for
future reference.
9. Leak test gas valves. Leak test must be performed
only by qualified PK certified personnel who have
been trained in this procedure. This procedure is
available on request from the PK Factory.
Installation and service must be performed by a
qualified installer or service agency who has been
trained on the Patterson-Kelley MACH boiler.
5.2
C
LEANING THE
B
URNER
1.
Lockout/tagout gas supply to the boiler.
2.
Lockout/tagout electrical power to the boiler.
3.
Open the front door of the boiler.
4.
Disconnect the two electrical connections to
the blower
5.
Remove the ignition electrode.
6.
Remove the six screws on the bottom of the
blower.
7.
Remove the three nuts holding the blower
outlet on the boiler casting.
8.
Pull the blower w/outlet and set aside. Inspect
burner gasket, replace if damaged.
9.
Reaching inside the burner, carefully remove
the burner. Clean using low pressure air to
remove any dust or lint from the burner.
10.
Reassemble being sure to install all gaskets
and seals properly.
