RUTHMAN GUSHER PUMPS 7600 H Series, Руководство пользователя

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When an ejector is used for priming it must be mounted
at the highest point in the impeller housing to ensure re-
moval of all the air in the casing and suction pipe. Oper-
ate the ejector with the gate valve in the discharge line
closed. Operate until ejector discharges a full steady
flow of liquid. On pumps using packing it may be neces-
sary to tighten packing gland (#9) to prevent pulling of air
through shaft clearances. After pump is primed properly
loosen gland to achieve a slight trickle of water through
the stuffing box.
The vacuum pump must be mounted at the highest point
in the impeller housing to ensure complete removal of
entrained air. Gate valve in discharge line must be closed.
After pump is primed valves between vacuum pump and
Gusher pump must be closed. On pumps using packing
it may be necessary to tighten packing gland (#9) to pre-
vent pulling of air through shaft clearances. After pump is
primed properly loosen gland to achieve a slight trickle of
water through the stuffing box.
INITIAL STARTING
For initial starting of the pump, the gate valve in the dis-
charge line should be closed and gradually opened as
the motor reaches full speed (approximately 5 to 10 sec-
onds). After pump has been in operation and the suction
and discharge lines are filled with liquid, it is not neces-
sary to close the gate valve when starting.
PACKED PUMPS
At initial start-up loosen packing gland screws to allow
free leakage. Then tighten screws uniformly on packing
gland (#9) until leakage is reduced to approximately 30
drops per minute. Never tighten packing enough to stop
all leakage, a slight leakage is required to lubricate pack-
ing (#28) and prevent scoring of shaft sleeve (#20). Gusher
uses non-asbestos packing which is a good general pur-
pose packing, good for hot or cold water, brine, oils, mild
caustics, solvents, acids and many general chemicals. It
is suitable for medium to high pressure applications.
PUMPS WITH MECHANICAL SEALS
In applications where leakage from the stuffing box is not
permissible or is undesirable, Gusher pumps are avail-
able in a wide variety of mechanical seals to meet most
any application. Gusher uses a John Crane Type 21 seal
as standard.
MAINTENANCE
1. Lubrication - All pumps are lubricated at the Gusher
Plant and should not require additional lubrication for
approximately 1200 hours of operation. A well planned
maintenance schedule can only be devised after the first
six months of operation and the lubrication record re-
view at that time. Each pump installation is unique and
requires individual attention to set up the proper lubrica-
tion schedule for each specific installation. About once a
year it is recommended that the bearings be cleaned and
flushed with kerosene or carbon tetrachloride and then
relubricated.
NOTE: Grease lubrication is available on 51H & 52H
Power Frames only. Oil bath lubrication is avail-
able on 7071S, 7071M and 7071L as a stan-
dard and as an option on 51H and 52H Power
Frames.
2.
Coupling Alignment
- Must be checked before and
after system start-up, after 300 hours of operation, and
again after 1200 hours of operation. Follow procedure
given in installation instruction. Again we strongly rec-
ommend setting-up and following a routine preventative
maintenance program to assure optimum life from your
pump.
3.
Packed Stuffing Box
- DO NOT STOP LEAKAGE!
Packed glands drawn up too tight increases power con
sumption, increases wear on shaft sleeve and shortens
life of packing. When leakage can no longer be controlled
by drawing up on the packing gland (#9) add another ring
of packing (#28) to the stuffing box. After further opera-
tion and leakage again can no longer be controlled re-
place the packing by using the following procedure:
1. Remove all old packing from the stuffing box. Clean
box and shaft sleeve (20) thoroughly and examine
for wear. Replace shaft sleeve if wear is excessive.
Check bearing by lifting shaft up and down; do not
expect packing to act as a bearing.
2. Use the right cross-section of packing, Gusher
uses Non-Asbestos packing as our standard for gen-
eral purpose applications. Packing for special appli-
cations available, consult factory.
3. When using coil or spiral packing always cut the
packing into separate rings. Never wind a coil of
packing into a stuffing box. Rings can be cut either
with butt (square) joint or diagonal joints.
The best way to cut packing rings is to cut them on a
mandrel the same diameter as the shaft sleeve. Hold
the coil packing tightly and firmly on the mandrel but
do not stretch excessively. Cut the ring and try it in
the stuffing box to make certain it fills the packing
space properly with no gap in the joint at the O.D. of
the ring.