Alfa Laval Contherm 6X11, Инструкция по эксплуатации

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9 Troubleshooting
9.2 Seal Leaks
You can reduce the probability of a seal leak occurring in your Contherm
™
system by performing maintenance on a regular
basis as recommended in Chapter Eight, Maintenance. If a leak does occur, the following procedures show how to identify
its cause and how to eliminate it.
The two most common leaks that may occur in your Contherm
™
are the following:
- Product Seal Leaks.
- Flush Seal Leaks.
Product Seal Leaks
Product seal leaks may occur with Contherms
™
equipped with rotary seals. When a product seal leak occurs, the product
leaks from the rotary seals via the seal face or the O-ring.
A product seal leak may be caused by any of the conditions identified in Table 9-2. To resolve the problem, perform the
appropriate action as described in the table. When applicable, the table will direct you to the appropriate maintenance related
procedure in Chapter Eight for correcting the problem.
Table 9-2. Product Seal Leaks
Possible Cause How To Resolve
Damaged or worn seal face.
Re-lap or replace seal face. Refer to Section 8.4.3, Seal Inspection and
Replacement.
Damaged or worn seal bushing. Replace seal bushing. Refer to Section 8.4.3, Seal Inspection and
Replacement. Lubricate before installing new O-Rings.
Defective or twisted O-Rings. Replace O-Rings. Refer to Section 8.4.3, Seal Inspection and
Replacement.
Foreign matter lodged in O- Ring groove of seal
shell. Clean groove and replace O-Ring.
Product has prevented inner spring from exerting
proper pressure onto seal shell. Thoroughly clean or replace the inner spring and the seal shell.
Seal face not installed into seal shell properly or
seal face not lapped flat. Remove and replace seal face. Refer to Section 8.4.3, Seal Inspection
and Replacement.
Improper O-Ring material. Consult your local Alfa Laval Inc. representative.
Seal locking pin broken or damaged. Replace seal pin(s). Refer to Section 8.4.3.4, Replacing A Seal Locking Pin.
Rotor stop adjustment or rotor hold down bolt
not set or secured properly. Ensure rotor travel is restricted by either securing the rotor hold down bolt
or by the rotor stop mechanism in the upper splined coupling depending
on your Contherm
™
design.
Seal spring failure due fatigue Inspect frequently and replace as needed based on experience.
Damaged rotor or improper repair of rotor Wear on rotor surface not allowing for a proper seal. Contact Alfa Laval
for rotor repair.
Extreme temperature differences between
Product inlet and media will cause seal leaks. Use of non-OEM seals or O-rings
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