12 | INSTALLATION, OPERATION and MAINTENANCE MANUAL
q. Excess Nitric acid can seriously damage NBR and other rubber gaskets. (See
page 60)
r. Insufficient clamping force can cause leaking. (See page 66)
s. Never tighten below the minimum pitch shown on the customer drawing. (See
page 66)
a. APV welded plate pairs are not suitable for sanitary duties where organic
fouling is expected, for example, dairy products. (See page 24)
b. Ensure sufficient space around the APV GPHE. (See page 37)
c. When assembling a GPHE, all components must be sufficiently supported to
prevent damage. (See page 41)
d. Use the customer drawing or plate arrangement diagram to correctly install the
plates. For simplification, whole blocks of identical left or right hand plates are
shown on the customer drawing or plate arrangement diagram. The total
number of each is given. (See page 43)
e. Do not permanently bend or scratch the plates or damage the gaskets during
installation. Some plates must be carefully flexed to install them. (See page 44)
f. Never-Seez Regular Grade is not suitable for stainless steel tie bars. (See
page 45)
g. A heat exchanger which has been in storage for more than five (5) years should
be inspected by a qualified SPX FLOW representative prior to preparing it for
operation. (See page 49)
h. Prior to startup, all pipework must be inspected and flushed clean. Strainers are
recommended to prevent debris from entering the heat exchanger. (See page
50)
i. Cleaning agents must not be aggressive or corrosive to the plates or the
gaskets. If in doubt, contact SPX FLOW. (See page 58)
j. The heat exchanger must be rinsed and then thoroughly drained immediately
following CIP. Residue from CIP may cause corrosion if left in the heat
exchanger. (See page 60)
k. Overheating the plates can cause discoloring and damage. (See page 62)
l. To avoid leakage, never tighten to a more relaxed pitch than the previous
closing. (See page 66)
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