14
Pump Removal/Replacement
HAZARD OF ELECTRIC SHOCK. Disconnect all
power and piping to system.
1.
Disconnect all power to the system.
2.
Bleed pressure and drain all water from the sys-
tem.
3.
Remove top and side panels.
4.
Remove pump motor wiring cover panel (2 screws).
5.
Note location of pump motor wires and remove.
6.
Loosen and remove vent line (see Figure 6.3, Motor
Vent Line).
7.
Remove bolts holding pump motor to the casting
(4 bolts), and lift motor out of casting.
8.
Remove impeller and install new mechanical seal
and impeller on the new motor.
9.
Place new motor in system and bolt down.
10. Replace vent line and tighten.
11. Reconnect wires and replace wiring cover and side
panels.
12. Reconnect the system.
13. Perform Pump Rotation Check (see Section 2,
page 12).
14. Replace top panel.
Close the front electrical enclosure door and
retighten the locking screw. This must be done
to limit access to high voltage components.
Failure to comply could lead to electric shock
or electrocution.
Pu
m
p/Motor Vent L
i
ne
Heater Ele
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ent
Hous
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ng
Motor
Pu
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Figure 6.3 Motor Vent Line
Heat Exchanger Removal/Replacement
(Closed loop system)
1.
Disconnect all power to the system.
2. Bleed pressure and drain all water from the system.
3.
Remove top panel.
4.
Remove cover on the cooling solenoid (see Figure
6.4, Heat Exchanger).
5.
Disconnect “COOLING INLET” and “COOLING
OUTLET” piping.
6.
Disconnect copper tubing connected to the heat
exchanger.
7.
Unbolt the heat exchanger and remove (4 bolts).
8.
Place new heat exchanger in system and bolt
down.
9.
Reconnect “COOLING INLET” and “COOLING
OUTLET” piping.
10. Reconnect wires to the cooling solenoid.
11. Reconnect copper tubing.
12. Replace cover on cooling solenoid and top panel.
13. Replace system water and reconnect the system.
Close the front electrical enclosure door and
retighten the locking screw. This must be done
to limit access to high voltage components.
Failure to comply could lead to electric shock
or electrocution.
Top Panel
Cooling Solenoid
Heat Exchanger
Figure 6.4 Heat Exchanger
Thermal Devices, Inc. Mount Airy, Maryland USA www.thermaldevices.com
Thermal Devices, Inc. Mount Airy, Maryland USA www.thermaldevices.com