MP Pumps HTO 180 INSTALL - Manual (Page 2)

MP PUMPS HTO SERIES
OPERATION AND MAINTENANCE
Thermal oil vapors leaking from a system can be highly
flammable.
Any system leak should be repaired immediately.
Do not insulate the pump or system piping with porous
flammable insulation. Fluid may wick, decompose, and
spontaneously ignite.
Ideal mechanical seal life is 20,000 hours. Reduced seal life
may be experienced from extreme conditions.
Recommended spare parts and service parts to rebuild the
HTO-180 are:
At disassembly, check the impeller and other wear items for
unusual wear. Replace if necessary.
When servicing the pump, care should be taken that the pump
has cooled to a sufficient temperature to permit disassembly.
The product should be drained from the pump housing and
disposed in accordance with the fluid manufacturer ’s
recommendations. Operation personnel should be warned
to exercise care and utilize eye and skin protection when
servicing the pump.
HTO 180 ASSEMBLY INSTRUCTIONS
1. Press the seal seat (part #16) into the seal
housing #12.
2. Set the drive sleeve #17 standing up on the
workbench with the threaded end up. Place the
seal housing #12 on the sleeve with the seal
seat facing up.
3. Lubricate the seal head’s o-ring (part of #16) and
slide it over the sleeve.
4. Install the snap ring #15 into the groove on the
sleeve.
5. Set the seal head working height to .25 inches
by measuring the distance from the snap ring to
the back of the seal.
6. Tighten the four - 1/8 inch set screws on the seal
head through the hole on the side of the seal
housing if applicable.
7. Install the pipe plug (part #13) into the seal
housing. Use sealant on the threads.
8. Install the three gaskets #9, two graphite
isolators #10, and o-ring #11 over the drive sleeve
onto the seal housing.
9. Place the seal housing assembly from step 8 into
the adaptor #6 and install three capscrews #14
through the seal housing and into the adaptor.
Torque the capscrews to 2- ft-lbs. in 5 ft-lbs.
increments.
10.Apply Loctite onto the drive sleeve threads and
install the impeller #5 by threading it onto the
sleeve. Make sure that the impeller shoulders
against the sleeve.
11. Position the gasket #3 onto the adaptor and install
the housing #16 to the adaptor using eight
capscrews #7 and lckwashers #8.
12. Slide the fan clamp #18 onto the sleeve with fan
blades closest to the seal housing. The pump
end assembly (Pumpak) is complete.
13. Pumpak assembly to the motor as follows:
1. Place 5/16x5/16x.5 key into the key slot
of the motor shaft.
2. Slide the Pumpak onto the motor with the
shaft/key indexed to lineup with a slot in
the pump sleeve.
3. Install and tighten (4) 1/2”-13 capscrews
onto the motor flange with 40 ft-lbs. torque.
4. Reaching through the inlet of the pump
push the impeller back towards the motor
until it stops up against the carbon isolators.
5. While holding the impeller in this position,
tighten the fasteners of the fan clamp with
15 ft-lbs. torque.
6. Rotate impeller to check for contact with
stationary parts.
7. Install piping.
8. After wiring the motor, check rotation by
momentarily applying power and viewing
the rotation of the fan clamp. Viewed from
the motor end, the clamp should rotate in a
clockwise direction.
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