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Walchem EZ Series Instruction Manual
Summary of EZ Series
Page 1
Five boynton road hopping brook park holliston, ma 01746 usa tel: 508-429-1110 web: www.Walchem.Com ez series electronic metering pump instruction manual iwaki pumps.
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Notice © 2016 walchem, iwaki america inc. (hereinafter “walchem”) five boynton road, holliston, ma 01746 usa tel (508) 429-1110 fax (508) 429-7433 all rights reserved printed in usa proprietary material the information and descriptions contained herein are the property of walchem. Such information a...
Page 3: Contents
Table of contents thank you for choosing a walchem ez series metering pump. This instruction manual deals with the cor- rect installation, operation, maintenance and troubleshooting procedures for the ez metering pumps. Please read through it carefully to ensure the optimum performance, safety and s...
Page 4: 1.0 Introduction
1 1.0 introduction 1.1 safety and caution notes always wear protective clothing, eye protection and gloves before working on or near a metering pump. Follow all recommendations of the supplier of the solution being pumped. Refer to the msds from the solution supplier for additional precautions. Walc...
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2 1.3 model code ez b16 d 1 - vc a 1 2 3 4 5 6 1 pump series ez: electronic metering pump with manual speed control (adjustable to 360 strokes per minute) 2 capacity/pressure rating (see section 1.4 for detailed chart.) 3 control module d: for use on all ez models, features digitally adjustable spee...
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3 1.4.3 capacity/pressure rating size maximum output capacity max output per stroke (ml) maximum pressure 1 connection size (in) tubing o.D (gal/hr) (ml/min) psi mpa b11 0.6 38 0.11 150 1.0 3/8 b16 1.0 65 0.18 105 0.7 3/8 b21 1.5 95 0.26 60 0.4 3/8 b31 3.2 200 0.56 30 0.2 1/2 c16 1.3 80 0.22 150 1.0...
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4 1.5 dimensions ezb models with thermoplastic liquid end materials (except -fc) 7.95” (see note 1) 1.85” tubing (id x od) ø1/4” x ø3/8” 0.08” 3.21” (0.98”) tubing (id x od) ø1/4” x ø3/8” tubing (id x od) ø1/4” x ø3/8” 3.94” 0.20” 3.46” 0.24” 1.26” 0.28” 0.63” 0.39” x y (s ee not e 2) z (s ee not e ...
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5 ezc models with thermoplastic liquid end materials (except fc) 8.66” (see note 1) 1.85” tubing (id x od) ø1/4” x ø3/8” tubing (id x od) ø1/4” x ø3/8” tubing (id x od) ø1/4” x ø3/8” 4.13” (1.06”) 3.94” 0.59” 1.18” 0.59” 0.28” 0.59” 0.59” y (s ee not e 2) 4.57” 0.31” 3.94” z (s ee not e 3) x ezc mod...
Page 9: 2.0 Installation
6 2.0 installation 2.1 unpacking open the shipping carton and inspect contents for damage. If any items are missing or damaged contact your local distributor. Pumps are pre-primed with water at the factory. If the application is not compatible with water, drain and dry before use. Be sure to remove ...
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7 foot valve pvc pipe tubing straightener (user supplied) or ceramic weight air gap return line point of injection injection valve coupling nut coupling nut (air vent valve) coupling nut figure 4 connection tubing 2.3 supply tubing the supply tubing run should be as short as possible. For flooded su...
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8 2.4 discharge tubing cut a length of tubing long enough to go from the pump to the application (injection) point. Additional tubing can be ordered from your distributor. Avoid sharp turns or bends and hot surfaces. Routing tubing through rigid pipe such as pvc pipe is recommended for long runs and...
Page 12: 3.0 Operation
9 outer diameter 1/2" 1/2" npt 3/8" npt trim back as needed to fit tee or fitting figure 7 injection valve 2.6 interlocking pump caution! Control of pump operation is critical. Operation and chemical addition during no flow situations can create hazardous situations from elevated chemical concentrat...
Page 13: P 3 6 0
10 3.2 adjustment and control 3.2.1 ez pumps using the ‘d’ control module if less than full output is required, set the frequency to the appropriate percentage of maximum desired. Example: model ezb21d1-ve has maximum output of 1.5 gph. Desired output is 1.2 gph. 1.2 ÷ 1.5 = 0.8 or 80% set the frequ...
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11 ez-t quick reference guide from: press: to: mode key select key wait menu + + move to manual menu changes pump frequency (1 to 360 spm) starts and stops manual operation or sets the hour (incrementing only) (hold for 3 seconds) mode sel mode sel sel sel min hour move to time / date setting menu m...
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12 programming and timer use caution! Before use, check the time and date. Set to the local time and date before programming. Incorrect time/date can result in incorrect operation. 1. Manual operation from the wait menu, pressing the mode key will enter the manual mode. Pressing sel will toggle the ...
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13 3.3 calibration i f exact output calibration is required, first prime and adjust the pump as above. Then connect a calibration column to the suction side of the pump. Turn the pump on for one minute and read the amount of liquid pumped from the col- umn. Adjust the frequency up or down as necessa...
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14 3.6 auto degassing valve operation the auto degassing valve (adv) is an option on select ez pumps and is added under the standard manual air vent valve when ordered. It is used primarily in applications where gassing is a problem and pumps can lose prime. Unlike the manual air vent valve, the aut...
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15 3.7 multifunction valve operation the multifunction valve is optional on select e-series pumps and replaces the standard manual air vent valve when ordered. It integrates the air venting/bleeding functions with a back pressure, anti-siphon, and pressure relief valve. For more detailed specificati...
Page 19: 4.0 Maintenance
16 4.0 maintenance caution! Before working on the pump, disconnect the power cord, depressurize the discharge tub- ing and drain or flush any residual liquid from the pump head and valves. Always wear protective gear when working around chemicals. 4.1 diaphragm replacement disconnect ac power to the...
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17 5.0 exploded view & parts guide pvc/gfrpp liquid end exploded view for ez pump model sizes 11-36 99 4 4 31 31 29 29 30 30 31 30 29 19 1 4 3 12 13 11 12 13 11 14 17 14 11 13 12 11 13 12 17 23 26 25 10 27 5 4 6 4 7 9 18 24 29 30 31 29 30 31 c entire head assembly d valve cartridge f multifunction v...
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18 pvc/gfrpp sizes 11-36 liquid end components item part# description qty material size liquid end material 1 eh1947 pump head 1 pvc b11 vc, ve, vf eh1948 1 pvc b16 vc, ve, vf eh1949 1 pvc b21 vc, ve, vf eh1950 1 pvc c16 vc, ve, vf eh1951 1 pvc c21 vc, ve, vf, eh1952 1 pvc b36 vc, ve, vf eh1960 1 pv...
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19 pvc/gfrpp sizes 11-36 liquid end components (continued) item part# description qty material size liquid end material *12 eh0061 seat, valve 4 fkma b11 vc, pc eh0069 4 fkma b16,21 / c16,21 vc, pc eh0119 4 fkma b31 / c31,36 vc, pc eh0048 4 epdm b11 ve, vf, pe eh0071 4 epdm b16,21 / c16,21 ve, vf, p...
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20 vca-vea liquid end exploded view for ez pump model sizes 11 thru 21 31 29 4 30 29 30 29 30 31 31 61 62 56 57 60 61 58 66 4 29 30 31 17 4 4 23 26 25 10 27 5 6 14 11 13 12 11 13 12 17 14 11 13 12 11 13 12 17 1 19 7 9 18 3 65 63 14 59 14 17 64 24 e item part# description qty material size liquid end...
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21 tc/ta liquid end exploded view for ez pump models 11-36 part numbers for these assemblies are on page 26 * parts included in the spart parts kits 31 31 29 29 30 30 31 30 29 19 1 4 3 12 13 11 12 13 11 14 17 14 11 13 12 11 13 12 17 23 26 25 10 27 5 4 6 4 7 9 18 24 item part# description qty materia...
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22 fc liquid end exploded view for ez pump models 11-36 19 7 9 18 3 12 13 11 12 13 11 14 17 3 14 14 1 12 13 11 12 13 11 14 17 14 14 25 (x2 supplied with pump) item part# description qty material size liquid end material 1 eh2407 pump head 1 pvdf b11 fc eh2408 1 pvdf b16 fc eh2409 1 pvdf b21 fc eh196...
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23 stainless steel (sh-n) liquid end exploded view for ez pump models 11-36 60 28 11 13 28 12 28 11 13 28 12 28 11 13 28 12 28 11 13 28 12 14 3 14 18 9 7 1 19 21 20 3 item part# description qty material size 1 eh2021 pump head 1 316ss b11 eh2176 1 316ss b16 / c16 eh2022 1 316ss b21 / c21 eh2023 1 31...
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24 accessories (not shown) part no. Description size liquid end mtl can-1vc-7 valve, injection 3/8 11, 16, 21 vc can-1ve-7 valve, injection 3/8 11, 16, 21 ve, vf can-1pa-7 valve, injection 3/8 11, 16, 21 pa can-1pc-7 valve, injection, 3/8 11, 16, 21 pc can-1pe-7 valve, injection, 3/8 11, 16, 21 pe c...
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25 drive and control module exploded view item part no. Description series 35 e00152 cover, keypad ez-d e00153 membrane keypad ez-d 36 eh1036 gasket, terminal box ez-t 38 eh0261 gasket, m3 x 35 bolt ez-d, ez-t 39 eh0202 grommet, cord ez-d, ez-t 40 eh0204 cap, strain relief ez-d, ez-t 41 eh0205 nut, ...
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26 key letters: a drive unit b control module c head assembly d valve cartridge d c b a valve cartridge (not shown in this view) head assembly control module drive unit ezb, ezc.
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27 c head assembly* (spare parts kits) pump model a drive unit b control module pc pe pa vc ve vf tc ta fc ezb11d1- zb11-d1 ezbd1 nzb11 (n11 -pk) ezb11d2- n/a n/a ezb16d1- zb16-d1 ezbd1 nzb16 (n16 -pk) ezb16d2- n/a n/a ezb21d1- zb21-d1 ezbd1 nzb21 (n21 -pk) ezb21d2- n/a n/a ezb31d1- zb31-d1 ezbd1 nz...
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28 6.0 troubleshooting caution: before working on the pump, disconnect the power cord, depressurize the discharge tubing and drain or flush any residual liquid from the pump head and valves, using proper chemical handling techniques. Problem possible cause corrective action pump does not start fault...