INSTALLATION, OPERATION and MAINTENANCE MANUAL | 67
Figure 49: In-line filter
12.11. Preventative Maintenance
A preventative maintenance program will help keep APV GPHE’s running at optimal
levels. The frequency of the maintenance inspections is dependent on a variety of
reasons, some of which are:
Production hours.
Product / process conditions.
Regulatory inspection requirements.
Design and operation of the overall system.
Decreased efficiency of the PHE.
Scheduled shutdowns.
Customer / end user requirements.
A recommended Preventative Maintenance Checklist is included in Appendix 2.
13. ACCESSORIES
13.1. Manual Tightening Wrenches
Manual tightening wrenches are available for most APV Plate Heat Exchangers to allow
opening and closing in the field. Ratchet type wrenches specifically designed for tie bars
are available for medium to large heat exchangers. The T4, Junior, H17, SR1, TR1 and
SR2 use box wrenches of the correct size. Power tightening equipment is required to
tighten heat exchangers with port openings >= 8 inch.
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