Hardi Mercury Covamax series Operator's Instruction Manual

6 - Maintenance1. 14Drain Valve Seal ReplacementIf the main tank drain valve leaks, the seal and seat can be changedthe following way.• Remove U-Clip (A) and remove Drain Valve (B)• Disassemble drain valve and replace items (C,D,E&F)• Reassemble in reverse order€ DANGER: Make sure tank has been thoroughly emptied anddecontaminated before commencing any work on the fluidsystem.€ DANGER: Do not enter the inside of the tank - the parts canbe changed from the outside of the tank!± WARNING: Use eye / face protection mask when dismantlingthe tank drain valve!μ Attention: Check function of valve with clean water before filling chemicals into the tankDrain Valve Cord ReplacementIf the main tank drain valve cord is damaged or broken, the cord can be replaced the following way.• Remove U-Clip and remove Drain Valve• Remove old cord and handle• Attach new cord to handle• Working from the top of the tank - feed the new cord through the locking guide and down through the drainvalve outlet• Reattach cord to drain valve and refit the drain valve into the outlet• Gently pull drain valve handle to take up excess cord length• Determine correct position for handle and readjust cord fixing at handle to obtain desired cord length.€ DANGER: Make sure tank has been thoroughly emptied and decontaminated before commencing any workon the fluid system.€ DANGER: Do not enter the inside of the tank - the parts can be changed from the outside of the tank!± WARNING: Use eye / face protection mask when removing the tank drain valve!μ Attention: Check function of valve with clean water before filling chemicals into the tank