Part # 1004905907
Harsco Industrial, Patterson-Kelley
155 Burson Street
East Stroudsburg, PA 18301
Telephone: (877) 728-5351
Facsimile: (570) 476-7247
www.harscopk.com
© 2014 Harsco Corporation. All Rights Reserved.
Rev. 10/21/2014
Cleaning Instructions for the MACH C750, C900 and C1050
An annual inspection is the best insurance to keep your boiler operating at high efficiency and ensure a full
return on your investment.
How often should I inspect the boiler for fireside residue?
As outlined in our O&M manual, we recommend a boiler inspection at least once per year (or every
2,500 run hours). Particular attention should be given to the fireside of the heat exchanger for
residual build up. If residue build-up is detected on the fireside of the heat exchanger, we
recommend a thorough cleaning by a qualified individual. Maintenance at the prescribed intervals
will allow your boiler to operate at peak efficiency.
Figure 1 - Example of residual build up in the Heat Exchanger
Maintenance and installation work should
only be performed by qualified and authorized personnel.
Wear appropriate safety gloves and eye protection.
Use the proper tools and the recommended procedure when cleaning the MACH boiler.
Use the MACH Cleaning Tool (P-K Part #26-0000-0662) or (P-K Part #26-0000-0663) as
shown in Figure 8.
General instruction for maintenance:
Switch off the power.
Wait until the heat exchanger has cooled down sufficiently before removing the covers.
Lock out / Tag out gas supply to the boiler.
© 2014 Harsco Corporation. All Rights Reserved.
Rev. 5/5//2015
Cleaning Instructions for the MACH C750, C900 and C1050
Lock out / Tag out electrical supply to the boiler.
Open the front door.
Disconnect the electrical connectors to the blower and the gas safety shut off / control valves.
Unbolt the burner hood and remove the gas train and blower assembly.
Carefully remove the burner. Use water to rinse the burner clean. Using a soft clean cloth, wipe
the inside surface of the burner. Do not wipe the mesh side (flame side) of the burner. Do not
use compressed air or high pressure water to clean the burner.
TOOLS required:
Flashlight for inspection
Hand scraper
7mm socket & 10 mm socket
13mm socket & combination wrench
#2 Philips screwdriver
Shop towels
3mm Allen wrench
T40 Torx
MACH Cleaning tool Wide (P-K Part #26-0000-0662), Narrow (P-K Part #26-0000-0663)
Annual Maintenance Kit (P-K Part # BP-0000-0345)
Garden hose
Shop Vacuum
Optional tools:
3/8 Electric impact driver
Remove left side cabinet panel to get access to the inspection covers of the MACH heat exchanger.
1.
2.
3.
4.
Disconnect the ignition wires from the ignitor and flame rod.
Remove the ignitor and flame rod.
Remove the burner.
Remove the inspection cover plates from the heat exchanger. The gasket, which is
contained in the Annual Maintenance Kit, should be replaced when reassembling the
inspection cover. (Figure 2).
5. Remove the condensate area inspection cover. (Figure 3)
6. Using the MACH Cleaning Tool, follow the recommended procedure outline below.
© 2014 Harsco Corporation. All Rights Reserved.
Rev. 5/5//2015
Cleaning Instructions for the MACH C750, C900 and C1050
Figure 2 - Removal of the Heat Exchanger inspection cover plate
Figure 3 - Removal of the condensate area inspection cover
© 2014 Harsco Corporation. All Rights Reserved.
Rev. 5/5//2015
Cleaning Instructions for the MACH C750, C900 and C1050
1. Start at lowest visible pin row of the heat exchanger. Place the Wide MACH cleaning tool
horizontally between the pins and push it gently forward and side to side until the end of the
tool meets the side of the heat exchanger. The blade of the cleaning tool will need to be guided
using both hands. Move the blade in and out over the full width of the heat exchanger. If
resistance occurs due to excessive fouling, increase the force and move the blade in and out
and side to side until the tool can push through the residue. Repeat this sequence for all rows
starting at the bottom row and working to the top row.
2. Place the Narrow Cleaning Tool at an angle of less than 60 degrees and downwards into the
heat exchanger. Starting at the lower row and going up move the blade in and out and side
wards.
3. Now place the Narrow Cleaning Tool at an angle of less than 60 degrees and upwards into
the heat exchanger. Starting at the lower row and going up move the blade in and out and
side wards. Move the blade in and out and to the left and to the right.
4. Continue this sequence again starting at the top and working down with the Wide Cleaning
Tool in a vertical position. The loose residue deposits will collect in the condensate pan.
Remove all of the residue from the condensate area, the ground and from the inspection cover
opening with a Shop Vac.
5. Re attach the inspection plate back into position and hand tighten using only 2 nuts. One in
each corner.
6. Remove the dirt cup siphon and attach the Shop vacuum hose to the siphon. Turn on the Shop
vacuum to remove all the debris in the condensate trap.
7. Leave the Shop vacuum turned on and using a garden hose, wash the heat exchanger with
fresh water from the burner hole. All remaining residue should be flushed out.
8. Shut off the Shop vacuum and remove the inspection plate. Then using the flashlight, verify
that the boiler is clean.
9. After a thorough inspection, remove any residue off the inspection plate before reassembly.
10. Attach the inspection plate after the boiler is fully assembled.
Figure 4 - Cleaning sequence of the MACH Heat Exchanger
NOTE: Move the MACH Cleaning Tool over the full width of the heat exchanger.
© 2014 Harsco Corporation. All Rights Reserved.
Rev. 5/5//2015
Cleaning Instructions for the MACH C750, C900 and C1050
Figure 5 - Mounting instructions for the inspection cover
Mount the cover plate and gasket to the heat exchanger as referenced below
•
Place the gasket in the groove of the
inspection cover.
•
Mount each inspection cover, including the
gasket onto the heat exchanger. Use the
flange lock nuts to mount the cover.
Locate and hand tighten the flange nuts.
The flange nuts should be tightened as per
the sequence shown in Figure 5.
After completing the initial sequence we
recommend checking to verify the flange
nuts are properly tightened.
•
•
•
Figure 6 - Mounting instructions for the condensate area inspection cover
•
•
•
•
•
© 2014 Harsco Corporation. All Rights Reserved.
Locate the inspection cover with the gasket
in place as shown
Use the flange lock nuts to mount the cover
Locate and hand tighten the flange nuts.
The flange nuts should be tightened as per
the sequence shown in Figure 6.
After completing the initial tightening
sequence we recommend checking to verify
the flange nuts are properly tightened.
Rev. 5/5//2015
Cleaning Instructions for the MACH C750, C900 and C1050
Figure 7 - Spare parts for the MACH C750, C900, and C1050
Part #
2620000020
Description
Inspection cover
C750, C900, C1050
26-2000-0011
Inspection cover gasket
C750, C900, C1050
2620000016
Condensate area
inspection cover
© 2014 Harsco Corporation. All Rights Reserved.
Diagram
Rev. 5/5//2015
Cleaning Instructions for the MACH C750, C900 and C1050
Part #
26-2000-0108
Description
Gasket for condensate
area inspection cover
Diagram
MACH Annual Maintenance Kit
Part #
*BP-0000-0345
Description
Annual Maintenance Kit, C750-C1050
Figure 8 - Narrow and Wide MACH Cleaning Tools
Part #
Description
#26-0000-0662
#26-0000-0663
Heat Engine, cleaning tool, C750-C1050
Heat Engine, cleaning tool, C750-C1050
© 2014 Harsco Corporation. All Rights Reserved.
Length
11”
11”
Width
¾”
½”
Rev. 5/5//2015