Installation / Operation Instruction Manual

BLP SERIES Install, Operation, and Maintenance Manual
SECTION 4: MAINTENANCE
Rev-1 Bradford White • 200 Lafayette St. • Middleville, MI 49333 Page 52 of 83
BrutePlate Manual Phone: [phone] • Website: www.BradfordWhite.com 02/26/2020
Below are the instructions for disassembly and inspection of the Plate and Frame heat
exchanger.
 HEX DIASSEMBLY and CLEANING
1. Shut down the heat exchanger as described in Section 3.8.
2. Shut off all water connections.
3. Shut off all power to the unit.
4. Ensure to bleed all pressure from all parts of the unit. Open drain valves.
5. Make sure the heat exchanger cools down to below 104 ºC; with EPDM < 219.2 ºC.
6. Clean the exposed threads of the ten clamping bolts (Figure 4-1) and grease them.
CAUTION!
To prevent personal injury, ensure unit is depressurized and drained of all hot fluids
before attempting to open the heat exchanger.
7. Loosen the clamping nuts affixing the bolts in the Follower frame plate in the order shown
in Figure 4-3a.
8. Unclamp as uniformly as possible by turning alternating bolts based on the bolt opening
order, thus keeping the frames and plates parallel throughout the operation. Avoid
allowing the frame plates to be skewed by more than 5 mm.
FIGURE 4-3a: Bolt Loosening Order FIGURE 4-3b: Marking Plates w/ Red Line
9. Remove the upper and lower Support Post Bolts, washers, and support post (Figure 4-2)
and set aside for reassembly.
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DIAGONAL RED MARK
ACROSS SIDES OF
PLATE ASSEMBLY