Watts AERCO SmartPlate SP23 - Page 68

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8 – CORRECTIVE MAINTENANCE
OMM-0069_0H • SP-100 • 1/30/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 68 of 134
OPENING HEAT EXCHANGER Instructions
Figure 8-8. Measurement of Plate Pack Dimension "A" – Splash Guard Removed
10. If the unit is a model SPDW113, remove the U-bolt securing the heat exchanger support
bar (see section 8.9 and Figure 8-18). If the unit is a model SPDW61, remove the U-bolt
and "L" bracket at the rear of the heat exchanger mount to permit the pressure plate to be
moved.
11. Opening of the heat exchanger is now possible by loosening diagonally-opposite pairs
(Figure 8-9). Opening must be carried out evenly so that the pressure plate is not out-of-
parallel with the frame plate by more than 3/8" (2 turns per bolt) in the horizontal plane and
1" in the vertical plane.
Figure 8-9. Required Bolt Loosening Pattern
1
1
6
4
2
5
3
2
3
4
5
6
1
2
3
4
6
5
SINGLE WALL
DOUBLE WALL
DOUBLE WALL 200 PSI
8
10
9
7