Torishima Pump CAL - Recommended spare parts; Mechanical seal; General

CAL Optional Design
- 13-
4.4.2. Recommended spare parts
As shown in Table 4-1.
Table 4-1 Recommended Spare Parts and
Replacement Cycle
Item
No.
Parts
No.
Parts name
Replacement
cycle (year)
1 2100 Shaft
*1
6 (9,000 hours or 2)
2 3210 Ball bearing
*1
9,000 hours or 2
3 4000 Flat gasket 2
*3
4 4120 O-ring 2
*3
5 4330 Mechanical seal 2
*3
6 4610 Gland packing 1
*3
7 5020 Casing wearing ring 6
8 5500 Washer (for Hard lock nut) 2
*3
9 9233 Hard lock nut 2
*3
*1 It is recommended to replace the bearings together with the
shaft for reduction of working manhour and improvement of
replacement work quality at customer side.
*2 Figure in parenthesis shows the replacement cycle in the case
of replacing the bearings together.
*3 When disassembling, replace them with new parts.
5. Mechanical seal
5.1. General
(1) The life of mechanical seal is remarkably shortened by
inclusion of foreign matter therein.
In reassembling the pump, clean the mechanical seal and
other internal components. In addition, be careful not to
permit such foreign matters to intrude in the pipeline during
running.
(2) Absolutely avoid dry running of the pump. (Including the
running under the seal box pressure below the atmospheric
bar.) Dry running will result in seizure trouble of the
mechanical seal, eventually causing not only the
mechanical seal but also the pump itself to be damaged.
(3) The sliding surfaces of the mechanical seal are fine finished
by lapping. Be careful to protect it from flawing and
chipping in handling.
(4) In principle, the sliding surface of the mechanical seal after
overhaul must be replaced with a new one, or must be
re-finished by lapping.
5.2. Outline of Construction Parts
For the mechanical seal sectional drawings, refer to Table 5-1.
The material of mechanical seal is different depending on use
conditions. Refer to the sectional drawing of pump.
Table 5-1 Mechanical Seal Type
Mechanical seal
type
Remark
Sectional
drawing
CA φd SS
Rubber bellows type single
mono-coil seal
(simple type)
Fig 5.2-1
LCA φd F
LCA φd E
Rubber bellows type single
mono-coil seal
(clutch type)
Fig 5.2-2
LTW φd F
LTW φd E
Rubber bellows type double
mono-coil seal
(clutch type)
Fig 5.2-3
LA200-RFφd
LA200-REφd
LA200-RKφd
Multi-spring type single seal
(SiC × carbon)
Fig 5.2-4
L9SA-SEφd
L9SA-SKφd
Multi-spring type single seal
(SiC × SiC)
Fig 5.2-5
MBS100-RFφd
Metal bellows type single
seal
Fig 5.2-6
MBS100-RFφD is balanced seal. Other models are unbalanced
seal.