HOMA CH_H Series - Manual (Page 7)

CH Series
PREVENTIVE MAINTENANCE
Regular preventive maintenance will help ensure
longer pump life and more reliable operation. It is
recommended that pumps in intermittent
operation be inspected twice a year and pumps
in continuous operation be inspected every
1,000 hours. The following is a listing of required
inspection and maintenance items. (Refer to
shop manual for disassembly and reassembly
procedures).
If any of the problems described in the
following list exists stop operating the pump
to avoid damage or personal injury.
1. CABLE ENTRY
Make sure that the cable entry flange and strain
relief clamp are tight. If the cable entry is
showing signs of leakage remove cable from
entry, remove grommet, cut a piece of cable off
so that the grommet seats on a new portion of
the cable, replace grommet, and reinstall cable
assembly, into the top of the motor.
Note: Explosion Proof cables are sealed with a
Factory Mutual Approved potting compound.
Please consult factory for instruction.
2. CABLES
Inspect the cable for cuts, scrapes or sharp
bends. If the outer jacket is damaged, replace
the cable. Do not attempt splices within wetwells
3. MOTOR INSULATION RESISTANCE
Megger the insulation between the phases and
between any phase and ground. Resistance
values should be greater than 1 M ohm. If
abnormal readings are obtained contact
authorized service center immediately.
4. EXTERNAL PARTS ON 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
Check the condition of the oil to see if any water
leakage has occurred. Remove the oil fill plug.
Drain the oil from the seal chamber into a
transparent container. Check for impurities and
emulsification.(Oil is cream-like.) If water
intrusion has occurred check lower mechanical
seal and replace if necessary. Refill seal
chamber with fresh oil. Refer to shop manual for
type and quantity of oil.
6. IMPELLER
Periodically inspect impeller by turning pump on
its side, remove suction strainer nuts and
strainer to expose impeller and inspect. Replace
the impeller if it is damaged or severely worn.
SPARE PARTS
In order to obtain spare parts identify the
required parts by looking at the enclosed cross
sectional drawing and listing, and contact
authorized HOMA PUMP TECHNOLOGY
representative with the parts required and the
pump serial number. Authentic Homa Pump
Technology parts shall be used to maintain
warranty.
Note: Explosion Proof pumps must be identified
as such, and the pump serial number must be
referenced for proper parts identification.
RECOMMENDED TOOLS AND
SUPPLIES
In addition to ordinary, standard tools, ensure
that complete set of metric socket wrenches,
complete set of Allen wrenches, metric triangular
wrench set, dead blow hammer, impeller puller,
Loctite 242 (Blue), petroleum jelly and anti- seize
compound are on hand.
Pg. 7
Installation, Operation & Maintenance Manual