ROLA-CHEM RC301 User manual

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PRO SERIES 300 PUMP
Installation & Parts Manual
INLET OUTLET
Section title Page
1. Safety Instructions 2
2. Specifications 4
3. Installation 6
4. Operation 8
5. Maintenance 10
6. Chemical Feed Pump Size Guide 12
7. Troubleshooting 13
8. Parts List 14
9. Warranty and Service 16
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS

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1. SAFETY: When installing and using this electrical equipment, basic safety
precautions should always be followed, including:
1.1 WARNING! To reduce the risk of injury, do not permit children to use this product unless
they are closely supervised at all times.
1.2 WARNING! Risk of electric shock.
Connect only to a grounding type receptacle protected by a ground-fault circuit interrupter
(GFCI). Contact qualified electrician if you cannot verify that the receptacle is protected by a
GFCI and that your installation meets local electrical codes, including grounding of water
system components.
1.3 WARNING! Risk of electric shock.
Do not bury or modify the metering pump cord. Locate cord to minimize abuse from lawn
mowers, hedge trimmers, and other equipment.
1.4 WARNING! Risk of electric shock.
On cord and plug-connected units, replace a damaged cord immediately.
1.5 WARNING! Risk of electric shock.
Do not use extension cord to connect unit to electrical supply; provide a properly located
outlet.
1.6 WARNING! Risk of electric shock.
Do not install within an outer enclosure or beneath the skirt of a hot tub or spa unless so
marked. All instructions must be in accordance with appropriate electrical codes.
1.7 WARNING! Risk of electric shock/pinching/chemical exposure.
Remove power sources or lockout circuit prior to performing maintenance on metering pump.
Pumps are usually timer controlled and can start at any time.
1.8 WARNING! Risk of Chemical Overdose/Exposure.
Removing power from circulating pump must also remove power from the chemical injection
pump. Provide a properly located outlet controlled by the circulating pump circuit.
1.9 WARNING! Risk of Chemical Overdose/Exposure.
Use a device such as a flow switch to shut off power from the from the chemical injection
pump in the event of pool pump or circulation failure.
It is not safe to automatically dispense chemicals into a circulating system that is not running.
1.10 WARNING! Risk of Chemical Overdose/Exposure.
Minimize amount of chemical on site that is available to dispense.
Size the feeder and container to pool/spa capacity.
Dilute chemical for small bodies of water.

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1.11 WARNING! Risk of Chemical Exposure.
Depressurize the system prior to connecting or disconnecting the metering pump.
1.12 CAUTION! Wear protective clothing, gloves and safety glasses at all times when
working on or near the metering pump.
1.13 CAUTION! Install the metering pump and chemical containers in a ventilated secured
location. Protect children, pets, and property from chemical hazards. Containment and/or
wash down capability must be in accordance with local regulations and chemical suppliers’
instructions.
1.14 CAUTION! Read and follow all instructions supplied with the chemical being fed. User is
responsible for determining the compatibility of the chemical with the metering pump.
Consult supplier of chemical if use and handling instructions are not available.
1.15 CAUTION! This pump is for use with permanently installed pools and may also be used
with hot tubs and spas. 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 storage pool is constructed so that it is capable of being readily disassembled
for storage and reassembled to its original integrity.
1.16 CAUTION! Service tubing regularly, e.g. when refilling chemical container. See
OPERATION and MAINTENANCE sections for details.

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2. Specifications
Power: 120 volt AC (corded) or 240 volt AC (conduit), 50/60 HZ, 2.5 amp (max.)
Pressure / suction: 30 psi max. dispense line pressure. RC307 maximum dispense line
pressure is 25 psi. 18-foot max. inlet suction lift.
Feed Capacity: Estimated maximum gallons per day (GPD) in Continuous mode.
To calculate estimated feed rate for Timer settings, multiply the Continuous mode rating from
above by the percentage setting or see table on next page.
Example for an RC305 set to 50%: 38 gallons per day x 50% = 19 GPD.
Available TIMER settings include increments of 1% from 1 – 10%, increments of 5% from 10 –
95% and 99%.
Capacity in this table is intended as a guide. Actual output may vary based on actual
environment.
RC301 RC303 RC305 RC307
0.9 12.0 38.0 77.0
Legacy Pro
Series Knob
Setting
Percent
Setting
Lo 1
215
335
450
570
680
HI 99
Conversion from Legacy
Pro Series Knob Setting
to Percent Setting

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2. Specifications - continued
Estimated feed rates at given Timer settings
– Gallons per Day (GPD)
Setting
(%) On Time Off Time RC301 RC303 RC305 RC307
1 5.4 SEC 8.9 MIN 0.01 0.12 0.38 0.77
2 10.8 SEC 8.8 MIN 0.02 0.24 0.76 1.54
3 16.2 SEC 8.7 MIN 0.03 0.36 1.14 2.31
4 21.6 SEC 8.6 MIN 0.04 0.48 1.52 3.08
5 27.0 SEC 8.6 MIN 0.05 0.60 1.90 3.85
6 32.4 SEC 8.5 MIN 0.05 0.72 2.28 4.62
7 37.8 SEC 8.4 MIN 0.06 0.84 2.66 5.39
8 43.2 SEC 8.3 MIN 0.07 0.96 3.04 6.16
9 48.6 SEC 8.2 MIN 0.08 1.08 3.42 6.93
10 54.0 SEC 8.1 MIN 0.09 1.20 3.80 7.70
15 1.4 MIN 7.7 MIN 0.14 1.80 5.70 11.55
20 1.8 MIN 7.2 MIN 0.18 2.40 7.60 15.40
25 2.3 MIN 6.8 MIN 0.23 3.00 9.50 19.25
30 2.7 MIN 6.3 MIN 0.27 3.60 11.40 23.10
35 3.2 MIN 5.9 MIN 0.32 4.20 13.30 26.95
40 3.6 MIN 5.4 MIN 0.36 4.80 15.20 30.80
45 4.1 MIN 5.0 MIN 0.41 5.40 17.10 34.65
50 4.5 MIN 4.5 MIN 0.45 6.00 19.00 38.50
55 5.0 MIN 4.1 MIN 0.50 6.60 20.90 42.35
60 5.4 MIN 3.6 MIN 0.54 7.20 22.80 46.20
65 5.9 MIN 3.2 MIN 0.59 7.80 24.70 50.05
70 6.3 MIN 2.7 MIN 0.63 8.40 26.60 53.90
75 6.8 MIN 2.3 MIN 0.68 9.00 28.50 57.75
80 7.2 MIN 1.8 MIN 0.72 9.60 30.40 61.60
85 7.7 MIN 1.4 MIN 0.77 10.20 32.30 65.45
90 8.1 MIN 54.0 SEC 0.81 10.80 34.20 69.30
95 8.6 MIN 27.0 SEC 0.86 11.40 36.10 73.15
99 8.9 MIN 5.4 SEC 0.89 11.88 37.62 76.23
On Continuous 0.90 12.00 38.00 77.00

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3. Installation
Tools required – Phillips screwdriver & adjustable wrench,
23/32” drill & ½” pipe tap (NPT) or 7/16” drill & ¼ “ pipe tap (NPT)
3.1 Install the ROLA-CHEM pump in an area protected from natural elements (sun, rain,
freezing, etc.).
Environmental effects may increase required service and maintenance.
The inlet side of the pump must be above the incoming liquid and the chemical container.
Flooded suction is not required or recommended.
Ensure that the tube can be routed without allowing it to kink.
Do not install directly above the chemical container or other equipment that can be
damaged by chemicals. Wall mounting key slots are provided on the rear of the pump
enclosure (For #10 screws, 6-1/4” apart for horizontal mount, 4-1/16” for vertical mount
and 3-7/8” for two-hole center mount).
Comply with local health codes. Cross connections must not allow undesired chemical
treatment.
MOUNTING HOLES
*SAME AS LEGACY PRO-SERIES
3.2 For chlorine pumps, undiluted swimming pool grade 15% maximum sodium hypochlorite
may be used. For acid pumps, 32% maximum hydrochloric acid may be used. Black
Norprene Pinch Tube is included for use with hydrochloric acid. See sizing for dilution.
3.3 Connect the injection fitting into the line to be treated. This should be after the heater. Use
pipe tape to seal the pipe threads. If two chemicals are being injected and no controller is
being used to prevent chemical mixing, space the injection points at least one foot apart to
prevent mixing. Do not exceed pressure / suction specifications.
A check valve may be used at the point of injection to prevent backflow, then the tubing
assembly can be disconnected at its connection to the check valve and it will not be
necessary to plug the injection fitting hole.
For installation where pressure is greater than 20 psi, use a check valve as the injection
fitting or in-line before injection fitting. One 3/8 barbed check valve and one 3/8 barbed inlet
x ¼ NPT (American National Standard Taper Pipe Thread) outlet check valve are included
with standard pumps. Use tubing clamp over tube on barbed ends of fitting on outlet side
of pump.
For low pressure applications, a brass injection fitting will fit a ½ NPT connector or a ½
NPT hole tapped into heavy gage pipe. Push the vinyl tube through the fitting until it hits

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the bottom of the pipe, then pull it back about ¼ inch. This creates an outlet for chlorine
away from the injector fitting and helps the injector fitting from becoming clogged.
For installations where a ¼ NPT injection port connection is already available, a ¼ NPT
adapter with a tubing clamp is included in the literature kit.
CAUTION! Do not install injection fitting directly into copper lines (may cause corrosion
and discoloring).
3.4 Place the suction tubing in the chemical container with the weight lying on its side. This
will keep the end of the suction tubing off the bottom to allow for sediment.
3.5 Electrical hook-up must comply with Code, including safety devices. Voltage must be per
the data plate.
CAUTION! Pump must be wired to prevent overdosing. Connect pump to turn off when
circulating system is off. Connect pump power to a flow switch on the return piping (if
circulation system stops, chemical pump must stop).
CAUTION! Pump must be turned off when backwashing filters.

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4. Operation
4.1 Before placing the ROLA-CHEM pump in operation, lubricate the Pinch Tube with silicone
lubricant (supplied in the literature kit) and install per Pinch Tube Assembly replacement
instruction section 5.2. NOTE: Maintain lubrication on the Pinch Tube at all times. Intervals
for applying lubrication vary with pump size, frequency of operation and pressures.
To access the Pinch Tube Assembly, remove the knob from the front of the pump housing.
Rotate the housing cover counterclockwise and lift off the cover, or on the RC301 Models
remove wing nuts and lift off the body half. Reverse steps to reassemble.
CAUTION! Remove power from pump when lubricating Pinch Tube. Do not remove Pinch
Tube Assembly from pump housing while system is under pressure.
4.2 The Mode setting has TIMER, CONTINUOUS and OFF positions. For interrupting action,
use the TIMER position and adjust the percent setting using the Up/Down buttons for the
desired output. For use with a controller (and for continuous, non-stop chemical feeding) use
the CONTINUOUS position.
NOTE: When operated using an external controller, the Pump display will turn off
when the Controller is not in a feed cycle and Pump settings cannot be adjusted. In
order to view and adjust the Pump settings: 1) temporarily set the external controller feed
time to 30 seconds or more. 2) Start a feed cycle on external controller and set the pump
mode to CONTINUOUS while feed cycle is still active. 3) Set intended feed time on external
controller.
See Controller manual for details on adjusting feed time and initiating a feed cycle. Or set
Pump mode by temporarily connecting the pump directly to a power source.
TIMER reduces the output by interrupting the chemical feeding for the selected portion of its
nine-minute timing cycle (setting of 50% provides approximately 4.5 minutes on and 4.5
minutes off). The pump will feed at its maximum rate relative to operating conditions
whenever it is feeding. Where an extremely accurate feeding setting is required, use a
calibrated cylinder and a stopwatch to calculate the amount fed under actual operating
conditions. Be sure to use full timer cycles when making the calculations. See (Section 2
Specifications) and (Section 6 Size Guide) for feed rate details.
CONTINUOUS runs the pump at maximum feed rate regardless of the timer setting.

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5. Maintenance
5.1 Preventive maintenance is the best defense against possible leaks. Inspect tubing
frequently as stated in safety instructions and lubricate Pinch Tube often to maintain a
coating of silicone grease. Pinch Tube is designed for minimum service life of 500 hours
pump run time. However Pinch Tube life is affected by many factors such as system back
pressure, environmental temperature, and the chemical being pumped. Replace the Tube
Assembly when found to be deteriorating or at the start of a new season.
CAUTION!
Both inlet and outlet connections may be under pressure. Depressurize the
system prior to connecting or disconnecting the metering pump.
WARNING! Pump tubing may contain chemicals. Wear protective clothing, gloves and
safety glasses at all times when working on or near the metering pump.
WARNING! Severe pinching of fingers can occur while installing Pinch Tube Assembly.
Caution must be used to keep fingers away from rotating parts.
5.2 Pinch Tube Assembly replacement procedure
1) See OPERATION section 4.1 to access Pinch Tube Assembly.
Figure 1
Inlet
2) Toggle the MODE Button intermittently between TIMER, OFF and CONTINUOUS
settings to move Roller to position as shown in Figure 1 then switch OFF. Roller will
rotate clockwise when MODE is set to CONTINUOUS or TIMER.
3) Pull lower left end of Pinch Tube Assembly out of inlet port (as noted in Figure 1) and
continue to pull away from Roller. Toggle the MODE Button intermittently between
TIMER, OFF and CONTINUOUS to move Roller. Keep fingers away from rotating
parts. Tube will be released as Roller rotates.