SPX TG H15-50, Instruction Manual, Page: 76 / 110

76
2080 3010 2500
X
fixing set screws
QUENCH
QUENCH
G1/4
black jig (assembly tool)
DRAIN
NPT1/8 plug
A.0500.351 – IM-TGH/07.02 EN (10/2015)
4.7.7.4 GC – Mechanical seal cartridge
A. General
1. Clean the shaft and casing and check if sealing faces are in good condition.
Use always a new gasket (2080) that is in good condition.
Ensure that the auxiliary connection openings are in the good position and accessible for use.
For exact position, see the figures and detailed instructions in the next paragraphs.
2. Lubricate the O-ring inside the shaft sleeve (for lubricant see sections 4.7.4 and 4.7.5).
Use a conical assembling bush (9010) on the shaft step (see section 4.7.6).
Put the cartridge on the shaft and assemble to the pump casing.
3. Bolt the cartridge seal plate securely to the pump housing.
To allow the shaft turning during assembling remove the black coloured assembling jig but
keep the non-coloured jigs in place. The jigs secure the right axial position of the
mechanical seal and center the shaft sleeve.
4. Continue assembling of the pump and adjust axial pump clearance (see section 3.21.6).
5. Fix the shaft sleeve of the cartridge seal to the pump shaft by means of the fixing set screws.
Secure the set screws with Loctite. Once the cartridge is fixed to the pump shaft and to the
pump housing all assembling jigs must be removed. Keep the jigs in a safe place to reassemble
the cartridge seal in case of disassembly for repair.
6. Plastic caps on threaded connection openings should be removed before commissioning.
7. Take the necessary safety precautions to prevent injuries during operation and maintenance by
accident, e.g. liquid or steam emissions, contact with rotating parts and hot surfaces.
B. Single mechanical seal cartridge Burgmann QN3 and TN3
1. Position the cartridge according to the next figures.
2. Position the drain connection of the TN3 (1x NPT 1/8) always to the bottom.
3. On QN3 cartridge the drain connection (1x NPT 1/8) must always be plugged off or connected
to a closed drain line. The normal position is to the bottom and allows drainage of quench liquid.
4. If turned to the top the opening NPT 1/8 can be used as a vent but in that case the bracket must
be provided by an extra access hole.
Fig QN3 – View on arrow X
• Remove black jig (1x) before fixation of shaft sleeve
(allows shaft sleeve to rotate).
• Remove non-coloured jigs (3x) after pump assembly
and adjusting axial clearance.