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Hazardous Substance Alert
1. Always drain and flush the pump before servicing or
disassembling for any reason (see instructions).
2. Always drain and flush pumps prior to returning unit
for repair.
3. Never store pumps containing hazardous chemicals.
4. Before returning pump for service/repair, drain out all
liquids and flush unit with neutralizing liquid. Then,
drain the pump. Attach tag or include written notice
certifying that this has been done. Please note that it
is illegal to ship or transport any hazardous chemicals
without United States Environmental Protection
Agency Licensing.
¤
OIL
THE ULTIMATE PUMP LUBRICANT
Specifically formulated SAE 30 weight,
high-grade, non-detergent pump oil
with special agents for the prevention of:
¥ Scuff and wear
¥ Moisture
¥ Oxidation
¥ Foaming
¥ Rust
1. After use, flush the pump with clean water.
2. Hypro diaphragm pumps come with oil in the
crankcase. Hypro recommends
changing oil after 40 hours of break-in
operation and every three months or
500 hours, whichever comes first. Use
Hypro Oil (part number 2160-0038).
Hypro Oil is a specially formulated,
high-grade, nondetergent, SAE 30
weight oil designed to prolong pump life.
To drain the oil from the pump, remove the oil drain
plug and rotate the shaft until the oil stops flowing out.
To fill the pump with oil, slowly pour the oil into sight
tube while turning the pump shaft. Turning the pump
shaft purges all the air out of the crankcase. Always
change oil when replacing diaphragms.
3. For winter storage or if a freezing condition will be
encountered, flush pump with a 50/50 mixture of
water and antifreeze.
Valve Replacement
Occasionally debris can cause the valves to not seat
properly or damage the o-rings. To check for this problem,
follow these steps.
1. Remove valve retainers and valve holders. W
ith
holders removed, the valves can readily be removed
and checked for debris or wear. Check o-rings as well.
See the parts list for appropriate valve and o-ring kits.
2. Replace the necessary parts and reassemble.
SYMPTOM PROBABLE CAUSE(S) CORRECTIVE ACTION
The pump does not draw water. One or more valves are seating improperly. Remove valve and check for debris.
Suction line is plugged or collapsed. Clogged strainer
. Examine suction line. Clean strainer.
The liquid flow is The charge in the pulsation Check pressure in pulsation damper
irregular. damper is incorrect. (approximately 20% of operating pressure).
One or more valves are seating improperly. Remove valve and check for debris. Examine
the valve seatings and clean them.
Output drops and the Oil level is too low. Add oil to correct level (halfway up the sight tube).
pump is noisy.
Oil comes out of the One or more diaphragms split. Remove manifold and heads. Drain oil and clean
discharge port or oil is crankcase of water. Replace diaphragms, heads and
a milky color. manifold. Refill with Hypro Oil (Part No. 2160-0038).
Troubleshooting
Maintenance
Model Capacity
9910-D813 19 oz.
9910-D1064 24 oz.
Model Capacity
9910-D1265 1 qt., 10 oz.
9910-D1516 2 qts., 13.5 oz.
CRANKCASE OIL CAPACITIES
Oil crankcases capacities are approximate. Fill oil
to proper level in sight glass. Always make sure all
the air is purged out of crankcase prior to
operating.
Form L-1383 (12/11, Rev. B)
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