Product Manual

PO-1550H
page 5
VI. TROUBLE SHOOTING GUIDE
A. pump will not prime
1. Clogged suction. Check that the suction tubes are clear
and that the screen fi lter is not dirty or clogged. Use a pair of
needle nose pliers or a stiff piece of wire to pull the suction
screen from housing. Clean it, if necessary, and push it gently
back into the housing or with a fi nger or blunt rod.
2. Air leakage. Check that the connection to housing, exten-
sion tube and suction tube are threaded tightly and sealed
with tefl on tape. (Section III.H)
3. Piston leakage. Verify that the tefl on ring fi ts snugly in bore
and is not cut or excessive worn.
4. Valve leakage. Inspect poppet valves for weak springs or
clogging. If pump was recently disassembled VERIFY PROP-
ER POSITION OF VALVE SEATS. Refer to section VII.B1.
5. Gasket leaks. Inspect for torn gasket (#18), poor fi t or loose
coverplate bolts (#20).
B. Not Enough Flow
1. Check items A. 1-5 above. Check discharge hose for clog-
ging or pinching. Verify that the nozzle is not clogged.
2. Check that piston is travelling its full stroke and the linkage
has not bound or jammed.
VII. MAINTENANCE
USE ONLY ORIGINAL FACTORY REPLACEMENT PARTS.
A. DISASSEMBLY.
1. Remove hose (#17) from housing. Unscrew suction and/or
extension tubes (#34 & #36).
2. Remove hex nuts (#22) and screws (#20) from housing.
Remove cover plate and gasket (#19 & #18), being careful
not to damage the gasket.
3. Remove large and small valve assemblies (#24 & #23) and
inspect for broken or weak springs, or damaged or clogged
valves.
4. Remove hairpin clip (#5), washer (#4) and clevis pin (#3)
which hold the handle (#2) to the piston rod. Remove hairpin
clip (#6) , fl at washer (#4) and clevis pin (#7) from links (#8)
at the pump housing (#37). Remove pin (#3) from piston rod
and set handle aside. Slide piston assembly (#28) from the
housing.
5. Inspect tefl on ring (#30) in piston groove. It must extend
about 1/32nd above the edge of the piston to seal properly. If
the ring is worn fl ush with the piston edge it must be replaced.
When removing the tefl on ring be careful not to damage the
piston if tools are being used. Always replace the O-ring (#29)
when replacing the tefl on ring. The rubber O-ring is com-
pressed over time, reducing its ability to seal.
6. Inspect piston bore in housing (#37) for wear. Any goug-
ing or scraping would indicate that the liquid being pumped
contains abrasives. Replace the housing and tefl on ring if the
surfaces are gouged or worn.
7. Remove the two screws (#9) that hold the retaining plate
(#10) to the housing. Remove plate to expose piston rod O-
ring (#11). Replace O-ring if worn.
B. REASSEMBLY.
1. Install the two small valve assemblies (#23) in the housing
fi rst, then the two large assemblies (#24). There is a small tab
molded into the valve seats which fi ts a guide channel in the
housing. This prevents installing the valve seats backwards. If
the tabs are broken, please note the following.
a. The suction valve seats (lower two) should have their springs facing each
other when installed.
b. The discharge valve seats (upper two) should have springs facing away
from each other.
2. Install piston rod O-ring (#11). Install retainer plate (#10)
with the groove facing AWAY from the pump housing. Ensure
piston (#28) has O-ring (#29) and tefl on ring (#30) installed.
Tefl on ring will stretch enough to install by hand (tools may
damage the piston). Slide piston rod into housing. The tefl on
ring will catch on the edge of the housing while pushing the
piston into the bore. To help seat the ring, turn piston slowly
while pushing ring into the grove with fi ngers. DO NOT
FORCE PISTON.
3. Inspect the cover plate gasket (#18) for damage.
4. Lay coverplate and gasket on housing and install screws
(#20) and hex nuts (#22) . Tighten fi rmly enough to compress
gasket.
5. Install short clevis pin (#3) through the piston rod and
handle securing with washer (#4) and hairpin clip (#5). Install
clevis pin (#7) , fl at washer (#4) and links (#8) at the pump
housing.
6. Install hose and suction extension tubes as required. Refer
to section III.I and Section II.E.
LIMITED ONE YEAR WARRANTY
Pacer Pumps warrants its products to be free from defects of material and workmanship for a period
of one year (12 months) of service, if the one year of service falls within the 24 months from date of
manufacture. The company warrants that all its products , at the time of shipment, will be free from
defects in material and workmanship for normal use and service. This warranty will not apply or be ex-
tended to products subjected to misuse, neglect, accident, or improper installation, or to maintenance
of products which have been altered or repaired by anyone except Pacer Pumps or its authorized
representatives, the buyer, or person receiving such a product during the duration of the warranty, shall
contact his Pacer Pumps dealer as soon as any defect occurs. Contact Pacer Pumps for the name and
address of your nearest dealer.
Pacer Pumps’ sole obligation under the foregoing warranty shall be limited to: (at its option) repair
and replacement (and re-ship to the buyer with transportation charges collect to any place in the U.S.)
of defective goods provided that if the company is unable to correct a defective component, part or
product , the Buyer shall be entitled to elect a credit at the original buyer’s purchase price. To return a
DEFECTIVE PUMP , to return any parts for credit, or to obtain service information, contact the service
department. After receiving permission to return defective merchandise, the buyer is authorized to
return the product to Pacer Pumps, freight prepaid. If the company determines that the warranty has
not been breached, product will be repaired or replaced free of charge.
The company will not be responsible for any damage or losses, direct or indirect, arising from any
cause whatsoever, nor for damage to equipment caused by outside infl uences including improper
installation or modifi cation, improper voltage supply, lightning, corrosive liquids, abrasive liquids, or
careless handling; nor for labor, transportation or other damages incurred in the replacement or repair
of replacement parts. In these cases repair will be subject to reconditioning charges in effect at the
current time.
Purchased merchandise, either as a complete product for resale, or components used in conjunction
with Pacer Pumps manufactured products, carries the warranty of the respective manufacturer of such
product or components.
This warranty supersedes any warranty previously in effect.
41 Industrial Circle 717-656-2161
Lancaster PA 17601 800-233-3861
Email: [e-mail] fax: [phone]