IOM-421 BWC-1

TP-603 - SAFETY AND DE-ENERGIZATION PROCEDURES

GENERAL SAFETY

• Read and understand all instructions and warnings before using or servicing this equipment.
• Keep these instructions for future reference.
• Follow all federal, state and local requirements for handling and treatment of battery wash cabinet effluent.
• Battery Wash Cabinet (BWC) units are not designed to be shipped or transported after initial delivery.
• A licensed structural engineer should be consulted prior to installing a BWC on any building level other than the ground floor.
• Perform system and safety check before operating.
• Failure to follow these instructions and warnings may result in property damage, personal injury or death.

WORK AREA

• Keep work area clean and well lit. Cluttered work areas and poor lighting can lead to accidents.
• Clean up/contain any fl uid spills immediately to prevent slips or falls.
• Be aware of potential hazards when performing any service or maintenance to the unit.

SERVICE & MAINTENANCE

Service personnel shall wear Personal Protective Equipment (PPE) appropriate for the task being performed.

LOCKOUT/TAGOUT

Lockout/tagout the BWC per your corporate policy, if damaged or not functioning properly. Lockout/tagout and deenergize all systems prior to performing any maintenance or service to unit.

LEAD-ACID BATTERIES-EXPLOSION HAZARD

Do not allow open fl ames or sparks of any kind near a battery. Highly explosive gas is generated when charging a battery that can remain in battery cells for extended periods of time after charging is complete.

• Always wear appropriate PPE including rubber apron, gloves, boots and full face shield when performing service or maintenance to any lead-acid batteries.
• Do not place metal or other conductive objects on top of battery. Arcing may occur causing damage to the battery and/or serious personal injury or death.

LEAD-ACID BATTERIES-EXPLOSION HAZARD (contd.)

• Use only chargers matching the voltage and amperage of the battery being charged. Overcharging a battery can cause damage to the battery, charger and/or serious personal injury or death.
• Turn off charger before disconnecting battery from charger. Arcing between battery and charger connectors can cause damage to the connectors and/or serious personal injury or death.

BATTERY WASH WATER HAZARDS

HEAVY METALS:

Battery wash water contains heavy metals including (but not limited to) lead and antimony, which through prolonged exposure can lead to serious, long-term, adverse health conditions.

EXTREME pH LEVELS:

Highly acidic (low pH) as well as highly alkaline/ basic (high pH) solutions can cause severe burns, release toxic fumes, and cause violent chemical reactions when mixed with water or when mixed together.

• pH values outside of the BHS allowable range of• 5 to 9 should be treated as “extreme” and caution should be taken to avoid direct contact with such solutions.
• Always wear appropriate PPE including rubber apron, • gloves, boots and full face shield when working in contact with any battery wash water.

TREATMENT CHEMICALS:

Use of chemicals not approved by BHS to treat wash water may result in the release of toxic fumes.

OPERATIONAL SAFETY

OPERATIONAL SAFETY

• Only personnel trained in the proper and safe operation of BWC units may operate or service the BWC.
• Operators shall wear appropriate PPE suitable for working with industrial lead-acid batteries while operating the BWC (see prior pages).
• All data plates, warning labels, placards, etc shall be in place and legible at all times. Contact BHS for replacement data plates, warning labels, placards or instructions.
• All users and service personnel shall be familiar with the meaning and risks associated with all data plates, warning labels, etc.
• All operators and service personnel shall be aware of potential crush and shear points while operating or servicing the BWC.
• Keep hands and arms out of the battery compartment while operating the BWC.
• Secure the door in the raised position by way of the door retaining pins prior to performing any service inside the BWC.
• Remove the BWC from service if it is found to be dam-aged, defective, or operating in a hazardous manner (or becomes such while operating) until repairs can be made to correct any problem(s).

DO’s AND DON’T’s

• Disconnect the power before attempting to perform any service or maintenance to the BWC.
• DO NOT exceed the maximum capacity of the BWC.
• DO NOT modify or fi t the BWC with attachments without prior, written approval from BHS.
• DO NOT perform any maintenance or service to the BWC with a battery loaded in the BWC.
• DO NOT allow anyone to enter the BWC at any time unless proper de-energization and lockout/tagout procedures have been performed.
• DO NOT operate the BWC with any guard or cover removed unless required for maintenance or repair.
• DO NOT use the BWC to wash anything other than industrial lead-acid batteries.
• DO NOT use foaming type detergents in conjunction with the BWC.
• DO NOT use soda ash or similar types of neutralizers.
• Use only fully liquefi ed neutralizers.
• DO NOT use the BWC in a manner for which it is not intended. Some examples of prohibited use are but not limited to:

           >>As a safety shower 
           >>As a parts washer 
           >>As a storage cabinet 
           >>As a waste water dump from other equipment 
           >>As a battery maintenance/repair station

DE-ENERGIZATION

1. Disconnect power to or turn off the RNS supplying the BWC. NOTE: If the BWC is connected directly to a plant water supply, turn the water supply valve off.
Failure to disconnect power to the RNS could result in an accidental start-up of the RNS possibly resulting in an unexpected spray of wash water.
2. Cycle the BWC through one complete wash cycle to release the water pressure. See Figure 1.
Failure to release any stored water pressure could result in an unexpected spray of wash water.


FIGURE 1

3. Raise the door and install the retaining pins to prevent the door from closing. See Figure 2.
Failure to secure the door in the raised position could result in injury from the door lowering unexpectedly or entrapment inside the BWC.


FIGURE 2




4. Turn off and disconnect power to the BWC. See Figure 3.
Failure to disconnect electrical power to the BWC could result in electrical shock.


FIGURE 3

NOTE: Some acidic water will remain in the BWC sump area as the sump pump will not activate with the RNS power switched off. Refer to BATTERY WASH WATER HAZARDS from above.

GENERAL INFORMATION

FEATURES

• Adjustable wash down timer
• Manual operated automatic door
• Battery drip dry - no air blow-off

AVAILABLE OPTIONS

NC - Neutralizing Cycle at beginning of wash down

FUNCTIONAL DESCRIPTION

CONSTRUCTION:

• Constructed of 304/316 stainless steel sheet and structural shapes.
• All hardware stainless steel or bright galvanized fi nish.
• All seams welded or sealed for water tight design.
• All welding conforms to all applicable AWS specifi cations.
• All plumbing components are CPVC Sch 80, brass, nylon, or similar corrosive resistant materials.

WASH CYCLE:

Battery wash down is accomplished via eight, round-pattern spray nozzles mounted on two adjustable height manifolds to accomodate a wide variety of batteries. The wash down is a low pressure - high volume fl ood wash that removes most dirt, debris and acid residue left on top of the battery from charging. A battery wash cabinet equipped with a neutralizing cycle includes a timed injection of conditioner preset to inject 1.5 oz of conditioner in 25 seconds. Monitoring the pH of the effl uent is required to obtain the optimum timer setting. The recommended pH range is from 5 to 9 with 6 to 8 being ideal.

SPECIFICATIONS

pH SCALE

INSTALLATION

GENERAL

The following paragraphs provide installation instructions for the BWC. Instructions provided include: unpacking, positioning, power and water installation.

The following tools and materials will be required for system installation:

• Channel-Lock Pliers
• Screw Driver (Standard, 1/4” Blade)
• Adjustable Wrench (12”)
• Measuring Tape (12’ min)
• Level (12”)
• Liquid Neutralizing Conditioner (LNC) (two gallons supplied)
• Ratchet
• 1/2” Socket (to unbolt unit from skid) Optional:
• Heat Gun (to aid in hose attachment)

UNPACKING

A.) Place packaged system in general area of its operating location. Location considerations should be: within proximity to water supply, electrical power supply, vehicle entrance, battery station locations and applicable building and electrical codes.

B.) Carefully cut and remove the shrink wrap from the unit. Be careful not to scratch, cut or bend any components on system while unpacking.

C.) Inspect the system components for any signs of damage. Take particular note of any evidence of rough handling in transit. Immediately report any damage to shipping agent.

D.) Unbolt the unit from the shipping skid(s).

E.) CAREFULLY lift the BWC from its shipping skids and remove the skid(s) from the area.

F.) Carefully lift the door open using two people and secure the door in the open position using the door support pins. Remove all items shipped inside the BWC, some of which will be used during installation. Once everything has been removed from inside the cabinet, carefully remove the door support pins and lower the door back to the closed position.

POSITIONING

The unit should be positioned to allow adequate clearance in the rear of the cabinet for water and neutralizer (if equipped) connections. Clearance should also be allowed on the left side of the cabinet for electrical hook-up and servicing. The following steps provide instructions for anchoring the BWC. A.) Move BWC into position allowing clearances previously stated. B.) Adjust cabinet legs to give the unit a 1/4” rearward pitch to ensure proper wash water drainage to sump area. C.) Anchor cabinet at each leg.

POWER CABLE CONNECTION

The AC power line must be connected to the unit’s electrical enclosure assembly. The connection should be made by a certified electrician. Ensure that electrical work meets all applicable electrical codes and requirements. See Section 1-3 for BWC power requirements. NOTE: Electrical connections should be appropriate for a wet environment and compliant with a NEMA 12 rating.

NEUTRALIZING CONDITIONER JUG (IF EQUIPPED)

The neutralizer pump must be primed prior to use.

A.) Place the supplied neutralizing conditioner jug on the top, rear of the BWC. See Figure 2-1.

B.) Connect the clear neutralizing conditioner line to the outlet nipple of the conditioner jug. See Figure 2-1.

C.) Fill the jug with conditioner to at least a minimum level of just over the nipple in the jug. See Figure 2-1.

Figure 2-1 D.) Disconnect the conditioner line at the inlet of the neutralizer pump and place the end into a bucket or similar container until conditioner fl ows from the line. See Figure 2-2

E.) Reconnect the line to the pump inlet and wipe up any spilled neutralizer. See Figure 2--2

Figure 2-2

PLANT WATER & DRAIN CONNECTION

If the BWC is not being used with an RNS unit (see sect. 2-7), plant If the BWC is not being used with an RNS unit (see sect. 2-7), plant water should be connected via the 3/4” NPTF inlet (located at the water should be connected via the 3/4” NPTF inlet (located at the top-center in the rear of the cabinet). If connections are made to top-center in the rear of the cabinet). If connections are made to plant drains, be sure ALL applicable requirements are met for waste plant drains, be sure ALL applicable requirements are met for waste water treatment prior to discharging effl uent. water treatment prior to discharging effl uent.

CLOSED-LOOP RECIRCULATION & NEUTRALIZATION SYSTEM (RNS) CONNECTION

Refer to installation instructions supplied with RNS unit (such as BHS models RNS-1, RNS-3-SS or RNS-4-SS) for connections to the BWC.

OPERATION

CONTROLS

The BWC-1 is operated via controls mounted on the electrical enclosure.

ON/OFF SWITCH - Activates power to the BWC.

START - Initiates the wash cycle.

WASH INDICATOR LIGHT - Illuminates to indicate wash cycle in progress.

EMERGENCY STOP - Immediately stops all functions in the event of a problem.

FIGURE 3-1

OPERATING PROCEDUR

The following procedures will guide the operator through the battery wash process.

OPERATIONAL PRE-CHECK:

The following items should be verifi ed prior to every wash cycle:

• Control panel switch is in the “ON” position.
• Emergency stop is in the reset (pulled out) position.
• Water supply is available:

1. If using an RNS system, verify the RNS unit is in the proper mode for use with a BWC unit. Refer to the manual supplied with the RNS unit for the proper operational procedures for that unit.
2. If the water supply is connected to plant water, verify the plant water supply valve is open, providing water to the BWC.

• Neutralizer container has at least 1” of solution (if equipped with NC option).
• BWC door is fully open and cabinet has fully drained from previous wash cycle.

NOTE: A small amount of water (1” or less) will remain in the sump area after drainage is complete.

• Sump screen is clear of debris and is properly positioned so that no gaps exist that would allow any debris into the sump area.