STA-RITE DMH-171, DH2H-112, DMH3-171, DHH3-169, DM2H3-110 Owner's Manual
...
“D” SERIES
CENTRIFUGAL PUMPS WITH TRAP
FOR SWIMMING POOL USE
O W N E R’ S M A N U A L
INSTALLATION, OPERATION & PARTS
Sta-Rite Pool/Spa Group
293 Wright Street, Delavan, WI 53115
International: 262-728-5551, FAX: 262-728-7550
www.starite.com
Union City, TN • Delavan, WI • Mississauga, Ont. • Murrieta, CA
© 2005, Sta-Rite Industries S409 (Rev. 9/6/05)
This manual should be furnished to
the end user of this pump; its use will
reduce service calls and chance of
injury and will lengthen pump life.
MODELS
Medium Head High Head Medium Head High Head
H.P. Phase Models Models Models Models
3 1 DMH-171 DHH-169 DM2H-110 DH2H-112
3 3 DMH3-171 DHH3-169 DM2H3-110 DH2H3-112
5 1 DMJ-111 DHJ-113 DM2J-111 DH2J-113
5 3 DMJ3-111 DHJ3-113 DM2J3-111 DH2J3-113
2
‘
D’ SERIES SELF-PRIMING
CENTRIFUGAL PUMP and
STRAINER
To avoid unneeded service calls, prevent possible injuries, and get the most
out of your pump, READ THIS MANUAL CAREFULLY!
The Sta-Rite ‘D’ Series Self-priming Centrifugal pump:
• Is designed for use with commercial swimming pools and spas.
• Is an excellent performer; durable, reliable.
Table of Contents
Safety Instructions ......................................................................................3
Uncrating and Inspection ............................................................................4
Installation...............................................................................................4-6
Electrical..................................................................................................7-8
Operation ...................................................................................................9
Service ...............................................................................................10-12
Troubleshooting Guide..............................................................................13
Repair Parts List ...................................................................................14-15
Warranty...................................................................................................16
3
READ AND FOLLOW SAFETY
INSTRUCTIONS!
This is the safety alert symbol. When you see this symbol on your system
or in this manual, look for one of the following signal words and be alert
to the potential for personal injury.
warns about hazards that will cause death, serious personal
injury, or major property damage if ignored.
warns about hazards that can cause death, serious personal
injury, or major property damage if ignored.
warns about hazards that will or can cause minor personal injury
or property damage if ignored.
NOTICE indicates special instructions not related to hazards.
Carefully read and follow all safety instructions in this manual and on equipment. Keep safety labels in good condition; replace if missing or damaged.
Incorrectly installed or tested equipment may fail, causing
severe injury or property damage.
Read and follow instructions in owner's manual when installing
and operating equipment. Have a trained pool professional
perform all pressure tests.
1. Do not connect system to a high pressure or city water system.
2. Use equipment only in a pool or spa installation.
3. Install pump with at least 2 hydraulically balanced main drains equipped
with correctly installed, screw-fastened, anti-entrapment certified covers.
See Page 4.
4. Trapped air in system can cause explosion. BE SURE all air is out of system
before operating or testing equipment.
Before pressure testing, make the following safety checks:
• Check all clamps, bolts, lids, and system accessories before testing.
• Release all air in system before testing.
• Tighten Sta-Rite trap lids to 25 ft. lbs. (3.5 kg-m) torque for testing.
• Water pressure for test must be less than 25 PSI (7.5 kg/cm
2
).
• Water Temperature for test must be less than 100oF. (38oC).
• Limit test to 24 hours. After test, visually check system to be sure it is ready
for operation. Remove trap lid and retighten hand tight only.
NOTICE: These parameters apply to Sta-Rite equipment only.
For non-Sta-Rite equipment, consult manufacturer.
IMPORTANT
SAFETY
INSTRUCTIONS
Always follow basic safety precautions with this equipment, including the following.
To reduce the risk of
injury, do not permit children to
use this product unless they are
closely supervised at all times.
This pump is for use
with permanently installed pools
and may also be used with hot
tubs and spas if so marked. Do
not use with storable pools. A
permanently installed pool is constructed in or on the ground or in
a building such that it cannot be
readily disassembled for storage.
A storable pool is constructed so
that it may be readily disassembled for storage and reassembled
to its original integrity.
SAVE THESE
INSTRUCTIONS
4
UNCRATING AND INSPECTION
Handle with care.
Check items received against packing list to be sure that all equipment has
been received.
Inspect for shipping damage. If found, file claim with carrier immediately.
Cleanup
Clean up foundation and surrounding area. Remove all trash and other materials which will interfere with installation.
For easy assembly, make sure all threaded joints and mating surfaces are
clean. If necessary, clean with wire brush and solvent.
To reduce danger of explosion and fire, do not use gasoline as a
cleaning solvent.
Remove all foreign material (packing, etc.) from pump and strainer.
Fire and burn hazard. Modern motors run at high temperatures.
To reduce the risk of fire, do not allow leaves, debris, or foreign matter to collect around the pump motor. To avoid burns when handling the motor, let it
cool for 20 minutes before trying to work on it.
INSTALLATION
Only qualified, licensed personnel should install pump and wiring.
Pump is designed for use in fresh water only.
Foundation
Foundation must:
Be located away from corrosive or flammable liquids.
Have enough ventilation to maintain air temperature at less than the maxi-
mum ambient temperature rating (Max. Amb.) listed on the motor model
plate. If this pump is installed in an enclosure/pump house, the enclosure
must have adequate ventilation and air circulation to keep the temperature in
the enclosure at or below the motor’s rated ambient temperature whenever
the pump is running.
Be Solid - Level - Rigid - Vibration free.
Be provided with necessary hold-down bolts, washers, and shims.
Allow pump inlet to be as close to water level as possible.
Use short, direct suction pipe (to reduce friction losses).
Maximum suction lift is 10’ (3 m).
Allow for isolation valves in suction and discharge piping.
Have adequate floor drainage to prevent flooding.
Be protected from excess moisture.
Allow adequate access for servicing pump and piping.
POOL PUMP SUCTION
REQUIREMENTS
Pump suction is hazardous and can trap and drown or disembowel bathers. Do not use or allow anyone else to use a pool, spa, or hot tub
unless it has at least two suction outlets to each pump suction line (see
“Outlets Per Pump,” Page 5). Do not use or operate swimming pools, spas,
or hot tubs if a suction outlet cover is missing, broken, or loose. Follow the
guidelines below for a pump installation which minimizes risk to users of
pools, spas, and hot tubs.
5
Entrapment Protection
The pump suction system
must
provide protection against the hazard of
suction entrapment or hair entrapment/entanglement.
Suction Outlet Covers
All suction outlet covers must be maintained. They must be replaced if
cracked, broken, or missing.
See Page 5 for outlet cover certification requirements.
All suction outlets must have correctly installed, screw-fastened covers in
place.
Outlets Per Pump
Provide at least two hydraulically balanced main drains, with covers (see
Page 4), for each swimming pool pump suction line. The centers of the main
drains (suction outlets) must be at least three feet apart.
The system must be built so that it cannot operate with the pump drawing
water from only
one
main drain (that is, there must be at least two main drains
connected to the pump whenever it is running). (See Figure 1). However, if
two main drains run into a single suction line, the single suction line may be
equipped with a valve which will shutoff
both
main drains from the pump
(see Figure 1).
More than one pump can be connected to a single suction line as long as the
requirements above are met.
Water Velocity
If 100% of the pump’s flow comes from the main drain system, the maximum
water velocity in the pump suction hydraulic system must be seven feet per
second or less even if one main drain (suction fitting) is completely blocked.
The flow through the remaining main drain(s) must comply with the latest
ASME/ANSI Specification for
Suction Fittings For Use in Swimming Pools,
Spas, Hot Tubs, and Whirlpool Bathtub Applications.
Figure 1 – Recommended pump suction layout.
Anti-entrapment
Cover, screw-fastened
to Main Drain Sump
Main Drain Main Drain
Valves OK between
pump and Tee
At Least
3 Feet
No valves between
Tee and Main Drains
Anti-entrapment
Cover, screw-fastened
to Main Drain Sump
Pump
2515 0497
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