Homa AM***-C Instruction Manual Download Page 61

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2. Cables

Inspect the cable for cuts, scrapes or sharp bends. If the
outer jacket is damaged, replace the cable. Splices of the
power or control cable within the wet well area are not
acceptable.

3. Motor insulation resistance

Megger the insulation between the phases; and between
any phase and ground. Resistance values should be great-
er than 1 M ohm. If abnormal readings are obtained, con-
tact authorized service center immediately.

4. External parts of pump

Make sure that all screws, bolts and nuts are tight. Check
the condition of pump lifting eyes and replace if damaged
or worn, Replace any external part that appears worn or
damaged.

5. Seal chamber oil

Seal chamber oil should be checked for signs of water
intrusion, or other impurities any time the pump is re-
moved from wet well. To check the condition of the oil,
remove the oil fill plug. Drain the chamber volume into a
transparent container. Visually check sample for impuri-
ties or emulsification (oil may appear cream-like if a small
amount of water is present). If significant water intrusion
has occurred, remove and replace lower mechanical seal.
Unless obvious mechanical damage has occurred to the
lower seal, it is good practice to replace the upper and
lower mechanical seals as a set. Refill seal chamber with
fresh oil to the bottom of fill plug port (when pump is in
vertical position) and replace oil fill plug.

Use extreme care when removing the seal chamber

plug, as the chamber may become pressurized if seal

failure has occurred.

6. Impeller

Periodically inspect impeller by turning pump on its side,
remove suction strainer nuts and strainer to expose impel-
ler and relocate position of adjusting plate (suction cover)
as needed. Replace the impeller if it is damaged or worn.

10.10. SPARE PARTS

In order to obtain spare parts identify the required parts,
and contact authorized HOMA customer service with your
order. Authentic HOMA parts shall be used to maintain
warranty.

Explosion Proof pumps must be identified as such,

and the pump serial number must be referenced for

proper parts identification.

10.11. RECOMMENDED TOOLS AND SUPPLIES

In addition to ordinary maintenance and lifting devices,
ensure that complete set of metric Allen wrenches, im-
peller puller, bolt adhesive and Anti-seize compound are
on hand.

10.12. PROFILE SEAL INSTALLATION

Black Rubber Sealing Ring (Profile Seal) must be installed
in the Guide Claw before pump is installed. Ring must be
installed with the large diameter lip inside the groove of
the Guide Claw Flange.

Correct

Incorrect

Rubber Ring

Call our technical support group with any questions
regarding the installation of this equipment.

10.13. SEAL PROBE INSTALLATION PROCEDURE

Mechanical Seal Leak Detection probe has been loose to
protect from shipping damage. Please follow this proce-
dure to install the probe:

1. Lay pump on its side with the plug on the seal cham-

ber facing upwards as indicated.

2. Unscrew the plug with the proper wrench, taking

care not to damage the sealing surface.

3. Verify that seal chamber oil level is within ¼” of the

indicated value. Measurement is from oil level to the
top of hole. See IOM Manual for seal chamber oil vol-
ume, if required.

4. Remove the new sealing gasket from package and

install it onto the seal probe plug.

5. Install the seal probe with gasket into the opening,

taking care not to damage the cable. Then tighten the
seal probe with the proper wrench until snug. Do not
overtighten. Once tight, verify the seal gasket is prop-
erly seated and the cable is not pinched or twisted.

NOTE: At installation of the seal probe be careful not

to bind the seal probe cord as it is being installed into

the pump.

6. Lift pump into a vertical position and inspect for any

leaks.

7. Secure seal probe cable to pump body and power ca-

ble with tyraps before installing pump.

Standard

Explosion proof

Plug