Flowserve MSS - Manual (Page 16)

16
8.3 For the static pressure test on the product vessel the vessel pressure may not exceed the
values given under item 1.1.
Temperatures at the component surfaces of the mechanical seal type MSS
correspond to the operating temperatures of the product. Suitable precautions
against contacts are necessary.
!
The mechanical seal type MSS will be damaged when the conditions given under
item 1.5 are not maintained.
!
Follow the instructions both for start up and re-commisioning of the machine
after a machine breakdown, see items 8.0 to 8.3.
Escaping leakage must not form an explosive mixture.
8.4 Possible malfunctions:
SYMPTOM CAUSE
Dramatic increase
of the leakage rate - Shaft rotates eccentric.
- Damage to the mechanical seal
(product enters the atmosphere).
8.5 The mixer shaft may be stopped at any time.
!
The mechanical seal type MSS cannot function during all assembly and mainte-
nance work.
9.0 Shutting Down the Machinet and MSS Removal
9.1 The machine can be shut down at any time under normal conditions.
9. Before the mechanical seal type MSS can be removed the machine must first be shut
down and the mixer vessel depressurized.
9.3 The shaft may be shut down under pressurized conditions.
9.4 Remove the mechanical seal type MSS by the instructions for installation in reverse
order.
Der Removing the mechanical seal type MSS from the machine may take place
during machine breakdown only.
Temperatures at the component surfaces of the mechanical seal type MSS
correspond to the operating temperatures of the product. Suitable precautions
against contacts are necessary.
Removing the seal may release product! All information and regulations regar-
ding safety measures and protective clothing with respect to this plant section
must be observed and strictly adhered to. The operator must ensure the proper